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555 Timer Projects - The Engineering Projects
555 Timer Projects
Today I am gonna post 555 Timer projects list which are already posted on our blog. Actually, I have posted many
555 Timer Projects
Posted at: 02 - Feb - 2016
Category: 555 Timer
Author: syedzainnasir
1 Comments
Departments:
1. Electronics Engineering
2. Mechatronics Engineering
Components:
1. 555 Timer
2. LEDs
3. Resistor
Softwares:
1. Proteus
Hello friends, hope you all are
fine and having fun with your lives. Today I am gonna post 555
Timer projects list which are already posted on our blog. Actually, I
have posted many 555 Timer Projects on my blog but we don't
have a list of these tutorials and they are quite scattered. So, today
I thought to arrange them in a proper list so that you can find all of
them in one place. All these 555 timer projects are simulated in my
favorite simulating software Proteus. I have also given their
simulations for download in almost all tutorials. If you feel problem
in any of them then ask in comments and I will resolve them.
All these 555 Timer Projects and tutorials are written and designed
completely by our team so we hold the complete ownership for
these projects. Other bloggers are welcome to share them on their
blogs to spread knowledge but do mention our post link as we have
done a lot of work and effort in designing these tutorials and
projects. :)
I will keep on updating this list in future as I am gonna add more
projects on 555 Timer, I will add their links below. So, enough with
the talking, let's get started with 555 Timer projects.
555 Timer Projects
I have divided these projects and tutorials in different sections
depending on their complexity. Follow all these tutorials step by
step and you are gonna be expert in 555 Timer real soon. I will
keep on updating this list in future, whenever I am gonna add new
project on 555 Timer, I will post the link here.
Basics of 555 Timer
Below tutorials will give you the basics of 555 Timer IC. So these
tutorials are kind of must because if you don't know the basics of
any integrated chip then how can you use it in your ciruits. So must
read them once and then move to next section:

What is 555 Timer ???
555 Timer Projec
What is 555 Timer?
Today i am going to share a new tutorial in which I am gonna explain What is 555 timer? We all know about 555 timer,
which is an 8-pin IC ...
Posted at: 16 - May - 2015
Category: 555 Timer
Author: syedzainnasir
11 Comments
Departments:
1. Electronics Engineering
2. Mechatronics Engineering
Components:
1. 555 Timer
2. LEDs
3. Resistor
Softwares:
1. Proteus
Hello friends, i hope you all are fine
and enjoying. Today i am going to share a new tutorial in which I
am gonna explain What is 555 timer? We all know about 555 timer,
which is an 8-pin IC (integrated circuit), most commonly used in
electronic projects, built now a days. As you can see fron its name
that it is a timer and designed to generate PWM.
In today's tutorial i am going to explain, what's hidden inside this
555 timer IC and what is 555 timer. A 555 timer is a much
compatible electronic device and the biggest feature of this IC is
that it able to work on both analogue and digital techniques. Now if
we simply consider the output of the 555 timer then, at any
particular time, this timer has only 1 definite state. Which means at
any time, it will be either ON or OFF. It is not possible that its output
is ON and OFF simultaneously. A new invention of 555 timer has
also been discovered which is named as 556 timer. 556 is in fact a
Dual version of 555 timer and it contains 2 555 timers in a single IC.
556 is a 14 pin IC. Now you will think that 555 timer is a pin IC and
as i said that 556 contains two 555 timers then, it should have 16
pins. The answer to this question is that, when two 555 timers are
connected to each other then the VCC and GND of both ICs is
made common so, we have 14 pins instead of 16. Now let's move
towards the basic theme of our tutorial. In this tutorial i will be
explain the steps, the pin configuration of 555 timer, It's different
modes and project applications.
Internal Design of 555 Timer
Before going into details of what is 555 timer, let's first come to the
internal design of a 555 timer. The outer shape of the 555 timer
may look like very simple but there is a complex mechanism hidden
inside that small IC. A 555 timer contains 25 transistors, 15
resistors and 2 diodes, which are connected to each other in a very
complex manner. An interesting thing to know here is that all these
components are embedded on a single small silicon chip. Some
other series of 555 timers are also available in market like NE555
timer, which we commonly use in our engineering or electronic
projects. And the second series is SE555. SE555 series was
designed for military purposes. These operating temperature
ranges of both NE555 ans SE555 are given below as:
Engineering simulations

NE555 is mostly used for basic level projects and such high level
accuracy is not demanded in it so it is capable to operate from 0 ~
70 degree Celsius.

SE555 was designed for military applications and it is used in
those projects where high precision is required. The operating
temperature of this IC is -55 ~ +125 degree Celsius.
Pin configuration of 555 Timer
Let's have a look at pin configuration to know what is 555 timer. As I
described earlier that 555 timer has total 8 pins. As i described that
555 timer is a multipurpose IC and it is capable to perform variable
function. So through some proper arrangement of connections, we
can made this IC to do different tasks. Now i will explain the every
pin no. and its purpose so that we know the answer to our main
question what is 555 Timer ??? :)
1.
The pin designated as pin#1 is GND pin. This pin is used to
provide reference voltage or ground to 555 timer.
2. The pin designated as pin#2 is TR pin. It is used for triggering
of 555 timer. The operating voltages of 555 timer is 4.5V ~
15V. When the operating voltages exceeds 5V then, the 555
timer triggers and it generated output or we can say that now it
has crossed that limit above which it will generate output.
3. The pin designated as pin#3 is the output pin of 555 timer.
Through this pin, the output of 555 timer goes to the external
circuit. The output depends on the purpose for which you are
using 555 timer. For example if you are using your 555 timer
to generate PWM then its output will vary. Sometimes it will go
High and some time it will go Low.
4. The pin designated as pin#4 is Reset pin of 555 timer. If you
look closely on the first feature image of the tutorial then, you
yourself will understand that it is a NOT function. Which
means that in order to reset the 555 timer you will have to give
'0' at that pin and after the compliment it will become High and
555 timer will 'Reset' .
5. The pin#5 of 555 is 'CTRL' pin. It is in fact a control pin of 555
timer. This pin gives us the direct access to the internal
voltage divider of the 555 timer, which is fabricated inside that
small silicon chip. We can divide the voltages according to our
output requirements.
6. The pin#6 is named as 'THR' pin of the 555 timer. For the
supply voltages, 555 timer has kept a reference value for
them. For example when the supply voltages exceeds 5 volts
then, the this pin becomes activated and the 555 timer starts
to generate output or it sends data to its output pins.
7. Pin#7 is named as 'DIS' of the 555 timer. This pin is in fact the
discharge pin of 555 timer and used to discharge the
capacitors between intervals. This pin has the biggest
advantage when, we are generating PWM through 555 timer.
8. The last pin is pin#8 and it is designated as 'VCC' . This is the
supply pin of 555 timer. Source is connected at this pin and as
i have already explained that the supply voltages range for
555 timer is 4.5V ~ 15V, but generally it triggers above 5 volts.
Modes of Operation - What is 555 Timer
???
In order to know what is 555 Timer, we should have a look at its
modes of operation. 555 timer has 3 major modes of operations. All
these modes have there own applications and advantages. All the 3
modes are explained in below:
Astable Mode of 555 timer:
From the name of this mode 'astable mode', you can understand
that, in this mode, we don't have any stable output of 555 timer.
While operating in this mode, the output will be continuously
fluctuating and we will be obtaining a square wave form on the
output pin of the 555 timer. To operate the 555 timer in Astable
mode, you will have to draw the following circuit, which is shown in
the image below:

Astable mode is also used to flash lamps and leds. A very similar
project named as Sequential LED blinking using 555 timer has also
been uploaded by our team. In that project 555 timer was again
being used in astable mode.
Monostable Mode of 555 timer:
In this mode of operation the 555 timer gives only one output pulse
in addition to the intentional trigger input. For example if you will
press the button then, 555 timer will produce a output pulse and its
length remains constant until you again press the button and the
555 timer will generate another pulse. The circuit to use 555 timer in
monostable mode is shown in the image given below:

Monostable mode of 555 timer has wast application. In this state it
is used as a timer, touch switches.

The biggest example of this mode is to generate PWM. If you
recall one of my previous tutorial which was Angle control of servo
motor using 555 timer, then at that stage we were using a 555
timer to generate a PWM and through this PWM, we were
controlling the angle of micro servo motor.

This mode is also used for capacitive measurement and also for
missing pulse detection.
Bistable Mode of 555 timer:
The third and the last mode of operation of 555 timer is to use it in
bistable mode. This thing is understood from its name 'Bistable'
which means this circuit will have 2 stable states, which we are
going to control. The circuit diagram to operate a 555 timer in
bistable state is shown in the image given below:

The above shown circuit is of bistable mode of 555 timer.

As you can see in the above figure, we have 2 push buttons. One
is connected to 'THR' pin and the other is connected to 'TRIG' pin
of 555 timer.

When we will press the 'TRIG' button, which means that we have
connected the trigger state to ground and its state has become
LOW. By doing that the output of 555 timer will become High.

On the other hand, when i will press the 'RESET' button then 'THR'
pin of 555 timer will be grounded and the output of 555 timer will
become LOW.

In this way we have made the 555 timer to work in 2 different
states and that's why it is called Bistable mode of operation of 555
timer.
If you wanna read more about 555 Timer then you must check

below simulations on 555 Timer:
Traffic Light Control using 555 Timer.

Servo Motor Control using 555 Timer.

LED Dimming using 555 Timer.

Relay Control using 555 Timer.
Alright friends, that was all from today's post. I hope you have
learned something new today and have got your answer for our first
question what is 555 timer and if you have any questions then
please ask in comments and i will try my best to resolve the issue.
Till next tutorial Take Care !!! :)
Tags:
555 timer basics,555 timer for beginners,555 timer modes of operation,basics of
555 timer,
ts - Basics
I hope you have read the basics of 555 Timer, so now here's time to
get started with 555 Timer Projects. These projects are designed in
Proteus simulating software and are working perfectly. Simulations
are given for download in most of these tutorials. So, lets get
started:

LED Flashing Project with 555 Timer
LED Flashing Project with 555 Timer in
Proteus
In today's tutorial, I am gonna show how to do LED Flasing Project with 555 Timer in Proteus ISIS. Its quite a simple project
and usually done by ....
Posted at: 11 - Apr - 2015
Category: 555 Timer
Author: syedzainnasir
1 Comments
Departments:
1. Electronics Engineering
2. Mechatronics Engineering
Components:
1. 555 Timer
2. LEDs
3. Resistor
Softwares:
1. Proteus
Hello friends, hope you all are fine
and enjoying life. In today's tutorial, I am gonna show how to
do LED Flashing Project with 555 Timer in Proteus ISIS. Its quite
a simple project and usually done by engineers in their first or
second semester. I have done this project in my first semester and
have learned quite a lot from it. I recently done it on Proteus so
thought of sharing it with you guys. It will also work on hardware as
I have tested it. In this tutorial, we will first have a look at How to do
single LED Flashing with 555 Timer in Proteus ISIS. And
afterwards, we will also see how to flash two LEDs with 555 Timer
in Proteus ISIS. Its quite simple and anyone one with basic
knowledge of electronics can design it in his first attempt. Still if you
get into any trouble, then ask in comments and I will try my best to
resolve your issues, but I don't think its gonna happen as its quite
basic. So let's start with this project:
Single LED Flashing Project with 555
Timer in Proteus ISIS

First of all, copy these components from the Proteus components
library:

After selecting these components, now design a circuit in Proteus
as shown in the below figure:

Now when you click on RUN button in PRoteus ISIS, the LED will
kep on flashing,it will go ON for 1 sec and then go OFF as shown
in below figures.

State # 1 is showing the OFF state of LED while the State # 2 is
showing the ON state of LED.

So, it will keep on flashing unless you Stop the Proteus ISIS
simulation.

You can download this simulation by clicking on the below button.
Download Single LED Flashing with 555 Timer in Proteus
Double LED Flashing Project with 555
Timer in Proteus ISIS

In the above portion, we have seen how to flash a single LED with
555 Timer in Proteus ISIS, now let's flash two LEDs with 555 Timer
in Proteus ISIS.

First of all design a circuit as shown in below figure:

As you can see its quite similar to the above project for single LED
flashing with 555 timer in Proteus ISIS but has small changes in
thhe values of resistor.

So, now when you hit RUN button on Proteus ISIS then these
LEDs will start flashing one after another, means when first LED is
ON then the second one will be OFF and vice versa.

Below figures are showing their ON OFF states:

State # 1 is showing the OFF state for both the LEDs, while State #
2 is showing the ON state for first LED and OFF state for second
and in third State first LED is OFF while the second LED is ON.

So, this simulation will work in this way, if first LED is ON then the
second one will be OFF and vice versa.

You can download this second simulation by clicking on the below
button:
Download 2 Led Flashing Project with 555 Timer in Proteus
That's all for today, in the coming post we will have a look how to
design a traffic signal flasher with 555 timer in Proteus ISIS, which
is gonna be quite exciting tutorial, so let's meet in the next tutorial.
Till then take care and have fun !!! :)
Tags:
555 timer simulation in proteus,555timer in pro


Multiple LED Flashing Project with 555 Timer
Multiple LED Flasher Project using 555
Timer in Proteus ISIS
In today's tutorial, we are gonna see How to design a Multiple LED Flasher Project using 555 Timer in Proteus ISIS. In our
previous tutorial we have .....
Posted at: 23 - Apr - 2015
Category: 555 Timer
Author: syedzainnasir
2 Comments
Departments:
1. Electronics Engineering
2. Mechatronics Engineering
Components:
1. 555 Timer
2. LEDs
3. Resistor
Softwares:
1. Proteus
Hello friends, hope you all are
enjoying and having fun. In today's tutorial, we are gonna see How
to design a Multiple LED Flasher Project using 555 Timer in Proteus
ISIS. In our previous tutorial we have seen How to design a LED
Flasher Project with 555 Timer in Proteus ISIS, in which we have
flashed single and double LEDs. In today's post, I am gonna extend
that previous tutorial and will see How to flash multiple LEDs with
555 Timer in Proteus ISIS.
Its quite a quick tutorial, as I don't have much material on it and its
also quite simple so no much explanation is required. The complete
project is given at the end for download but again as I always
mention, try to design it by yourself, so that you get some
knowledge out of it.This type of projects are normally designed by
engineering students in their first or second semesters and are
really a good start in learning electronics. IF you have any
questions related to this project then ask in comments and I will try
my best to resolve them. So, let's get started with implementation of
multiple LED Flasher Project using 555 Timer in Proteus ISIS.
Multiple LED Flasher Project using 555
Timer in Proteus ISIS

555 Timer is well known IC used in timing projects and its the most
widely used IC before microcontrollers.

In our previous project we have flashed one and two LEDs using
555 Timer which was quite simple and easy and today we are
gonna go a little advance and will flash multiple LEDs using 555
Timer.

So first of all, open your Proteus software and include the below
components into its workspace.
Free engineering software

After adding these components, now we need to design the circuit
diagram.

So, design a circuit diagram of Multiple LED FLasher Project using
555 Timer as shown below:

If you have a look at the above figure closely and compare it with
the previous project of 2 LED Flasher with 555 Timer in Protes
ISIS then you can have the idea that its simple an extended
version of that project.

I haven't done anything but simply added LEDs in parallel to those
2 LEDs and give it a beutiful form so that it look attractive.

These kinds of projects are normally used for decoration where
you need to set some pattern for LEDs and make them blink.

So, now we are done with the designing of our project so let's run
the PRoteus Simulation.

When you run the Proteus Simulation, and if everything's gone fine
then these LEDs will start flashing as shown in the below figure:

The above figure shows the three states of this project.

State # 1 shows the OFF state of this project while State # 2 and 3
are the ON states, these LEDs will keep on flashing as long as the
simulation is running.

You can download the Proteus simulation of Multiple LED Flasher
Project using 555 Timer by clicking on the below button:
Download LED Flasher Project using 555 Timer
That's all for today, I hope I have conveyed some knowledge and
helped in some way. It was a quite an easy project that's why I
haven't explained much but if you have some querries then ask in
comments. Subscribe us via email to get these tutorials straight in
your inbox. Till next tutorial, take care !!! :)
Tags:
555timer simulation in proteus,LED flashing in proteus,LED Flashing with
555timer,Proteus simulation of 555 timer,


Sequential LED Flashing Project with 555 Timer
LED Blinking using 555 Timer
Today I am going to share my new tutorial which is Sequential LED Blinking Using 555 Timer in Proteus ISIS. If you recall our
one of previous tutorials....
Posted at: 28 - Apr - 2015
Category: 555 Timer
Author: syedzainnasir
0 Comments
Departments:
1. Electronics Engineering
2. Mechatronics Engineering
Components:
1. 555 Timer
2. LEDs
3. Resistor
Softwares:
1. Proteus
Hello friends, hope you all are
fine and having fun. Today I am going to share my new tutorial
which is Sequential LED Blinking Using 555 Timer in Proteus ISIS.
If you recall our one of previous tutorials, which was ‘Multiple LED
Flashing Project Using 555 Timer in Proteus ISIS’, but in today’s
tutorial we are going to take the same concept to a next level and
we are going to make the LEDs blink in either ascending or
descending order.
It is a very simple tutorial like the previous one, but the only change
is, in this project we have added a Shift Register (4017) next to 555
Timer. 4017 is a Serial IN Parallel OUT Shift Register, which
means, at input port it takes data in Serial manner and at output
port it will give data in Parallel manner. All types of register needs a
clock pulse to operate and this clock is provided by Timers or Micro
controllers. In this project we will be using 555 Timer to generate
clock pulse. 555 Times gives clock pulse at pin # 3 abbreviated as
‘Q’ pin. And this clock pulse is given at pin # 14 of Shift Register
abbreviated as ‘CLK’ pin. Shift Register (4017) has total 15 pins. 2
input pins, 10 output pins. Input data is given at pin # 13, which is
called ‘Enable’ pin and register shifts the data sequentially at its
output pins. Shift register has 10 output pins which means it is a 10-
bit shift register, which means it executes 10-bit data
simultaneously. Now dear friends, let’s move towards the hardware
of the project but as you know, practice makes a man perfect. Try to
do it with your own hand so that, you get to know the practical
applications of electrical components in person.
Dear friends, you can also Download the complete simulation of the
Sequential LED Blinking Project using 555 Timer, by pressing on
the button given below. So, let's get started with Sequential LED
Blinking using 555 Timer in Proteus ISIS.
Download Sequential LED Blinking Project Using 555 Timer
Sequential LED Blinking using 555
Timer in Proteus ISIS

Weare gonna design a Project named LED Blinking using 555
Timer so let's first have a look at its block diagram.

Threshold voltage for 555 Timer is 5 volts, and when voltages
exceeds this level, 555 timer triggers and it generates a output
pulse at its output pin which is ‘Q’ pin.

While designing the circuit, First of all 555 Timer will come,
secondly Shift Register (4017) will be connected with it and at the
end we will plug LED's. The complete circuit flow diagram is shown
in figure below:

Now coming towards the designing of the project, first of all, place
the components in your Proteus workspace, as shown below in
image:

Now Output pulse from 555 Timer is connected to input ‘CLK’ pin
of Shift Register.

Since the register being used is 10-bit, and its outputs are Q0~Q9.
The pins Q0~Q5 are connected to LED's D6~D1 respectively.

After that Register output pin Q6 is also connected to LED (D2)
and it becomes parallel with Q4. Now LED, (D2) has 2 parallel
inputs and it becomes HIGH (turns ON) if any of the two Inputs is
HIGH.

Next we connect the Register output pin Q7 to LED (D3) and then
it becomes in parallel with Q3. After doing that LED, (D3) has 2
parallel inputs and it becomes HIGH, if any of the 2 inputs is HIGH.

After doing that, now we connect register’s output pin (Q8) to LED
(D4) and then it also becomes in parallel with Q2, and LED will
start glowing if any of the 2 inputs will be HIGH.

Now at the end, we connect Q9 to LED (D5), and then it becomes
in parallel with Q1. Now D5 has 2 inputs (Q9 &Q1) and LED will
glow if any of the 2 inputs will be HIGH.

Now at the end, If you have connected all the components in exact
order, and all the connections are OK then, the exact simulation
will look like as shown below:

Now if we run the Proteus simulation and observe it closely, then
we will see that, 555 Timer is continuously generating PWM and
the Shift Register set’s its output ports HIGH from Q0~Q9
respectively.

First of all Register’s output pin # Q0 becomes HIGH and it send
signal to LED (D6) and LED will start glowing. You can also
observe this phenomenon in the image given below:

Then pin # Q1 becomes HIGH and it send signal to LED (D5) and
D5 starts glowing. This can be observed in the figure given below:

Then register's output pin Q2 becomes HIGH and sends signal to
LED (D4) and D4 starts glowing. This can also be observed in the
figure given below:

Then Register's output pin Q3 becomes HIGH and send signal to
LED (D3) and this LED starts glowing. This stage can be seen in
the figure given below:

Then Register's pin Q4 becomes HIGH and sends signal to LED
(D2) and this LED (D2) starts glowing. This process is shown in the
image given below:

And in the next step, Register gets its pin # Q5 HIGH and send
signal to LED (D1) starts to glow. This process can be seen in this
figure:

This process keeps on going and when the Register;s next pin
becomes HIGH, which is Q6, then it again sends signal to LED
(D2) and it starts to glow, and so D3,D4,D5 will glow respectively,
and this sequence of LED's blinking will continue, until you stop it
manually or by yourself.

In the beginning, when LED's Started to blink from Left to Right
which was (D6 to D1) , this sequence is called Forward Sequence.

After that, LED's started to blink from Right to Left which was (D1
to D6), this sequence is called Reverse or Backward Sequence.

We can summarize this whole sequence into a tabular shape, and
this table is given in the figure below:

This process keeps on going and LED's keeps on glowing in a
beautiful sequence. These type of projects are generally used for
decoration purposes.

So, that's all about Sequential LED Blinking Using 555 timer.
Alright friends, that's all from this post. I hope now you can easily
design LED Blinking using 555 timer Project. In the coming
tutorials, we will discuss something new regarding 555 Timer
applications. Until than, Take Care and Be Safe !!! :)
Tags:
LED blinking projects,LED projects in proteus isis,Sequence blinking of LED using
555timer,Sequence blinking of LEDs,Sequential blinking of LEDs using 555timer in
proteus ISIS,


LED Dimming Project with 555 Timer
LED Dimming Project Using 555
Timer in Proteus ISIS
555 Timer Pr
In today's tutorial we are gonna see how to design a LED Dimming Project using 555 Timer in Proteus ISIS. In our previous
tutorials we have seen how to ....
Posted at: 28 - Apr - 2015
Category: 555 Timer
Author: syedzainnasir
1 Comments
Departments:
1. Electronics Engineering
2. Mechatronics Engineering
Components:
1. 555 Timer
2. LEDs
3. Resistor
Softwares:
1. Proteus
Hello friends, hope you all are
enjoying and having fun. In today's tutorial we are gonna see how
to design a LED Dimming Project using 555 Timer in Proteus ISIS.
In our previous tutorials we have seen how to design Multiple LED
Flasher Project using 555 Timer in Proteus ISIS and also Single
and Double LED Flasher Project using 555 Timer in Proteus ISIS, in
which we have seen how to flash Single and Multiple LED's using
555 Timer in Proteus ISIS. In today's post i am gonna extend the
same concept and we will see how to design a LED Dimming
Project Using 555 Timer in Proteus ISIS.
It is a quick and very simple tutorial and it elaborates how to control
the Intensity of LED using 555 Timer in Proteus ISIS. It's a very
simple project and the complete project is given at the end for
download but again as i always say try to design it by yourself so
that you get some knowledge out of it. It's a very simple project and
these type of projects are designed by Engineering students in their
First semester and are really a good start in learning electronics. If
you have any queries regarding this project then feel free to ask
and i will try me best to resolve them. So, let's get started with
implementation of LED Dimming Project using 555 Timer in Proteus
ISIS.
LED Dimming Project Using 555 Timer
in Proteus ISIS
Free engineering software

555 timer is a well known IC used in timing Projects and it is the
most widely used IC before micro controllers.

In our previous projects we have seen how to flash a single or
multiple LED's but today we are going one step ahead and we are
gonna learn How to Control the Intensity of LED using 555 timer in
Proteus ISIS.

So. first of all, open your Proteus software and include the below
components into its work space.

After adding these components, now we need to design the circuit
diagram.

So, design a circuit diagram of LED Dimming Project using 555
Timer as shown below:

If you look closely at the project then you will see that it is similar to
one of our project titled Sequential LED Blinking Project with 555
Timer in Proteus ISIS.

In this project we will control the intensity of LED through 555
timer.

These kind of projects are also used for Decoration purpose and
the beauty of this system is that we can change the Dimming rate
of LED and we can control it our self.

Now we are done with the Designing of the project and let's run its
Proteus simulation.

When you run the Proteus simulation and if everything is alright
then the LED pattern will be like:

The above figure shown the three states of the project.

State # 1 shows the OFF state of LED, State # 2 shows that LED
has started to glow and State # 3 shows that LED is glowing with
full intensity.

After that the loop starts again from State #1 to State # 3, unless
you keep running the Proteus Simulation.

You can download the simulation of LED Dimming project using
555 Timer by clicking on below button:
Download Project Simulation
That's all for today, in the coming post we will discuss few more
such projects. Till than take care !!! :)
,
Tags:
555timer simulation in proteus,LED dimming in proteus,LED Dimming with
555timer,Proteus simulation of 555 timer,
ojects - Advanced
Now I think you are quite expert in 555 Timer and have done the
basic projects so now its time to move to the next level and design
advance level projects with 555 Timer. In these projects we are
gonna interface difference electronic modules with 555 Timer.

Seven Segment Display with 555 Timer
Seven Segment Display Using 555 Timer in
Proteus ISIS
To explain a tutorial about Seven Segment Display. So today, I am going to share my new project tutorial which is Seven
Segment Display using 555 Timer.....
Posted at: 30 - Apr - 2015
Category: 555 Timer
Author: syedzainnasir
4 Comments
Departments:
1. Electronics Engineering
2. Mechatronics Engineering
Components:
1. 555 Timer
2. LEDs
3. Resistor
Softwares:
1. Proteus
Hello friends, hope you all are fine and enjoying.
Yesterday I got a mail from a friend, and he requested me to
explain a tutorial about Seven Segment Display. So today, I am
going to share my new project tutorial which is Seven Segment
Display using 555 Timer in Proteus ISIS. It is a very simple project
to understand Modern Digital Electronics.
As you all know, now a days all the Digital Display’s uses Seven
Segment Display. So first of all let’s have a little introduction about
Seven Segment Display. How they are fabricated and how their
LED’s glow in such a beautiful manner? Seven Segment Display
(SSD) is the form of electronic device, used to display decimal
numbers. Seven Segment Displays are commonly designed in
Hexagonal shape but according to our project’s requirement we can
also design them in some other shapes like rectangle, triangle,
trapezoid etc. Seven Segment Displays may uses LIQUID
CRYSTAL DISPLAY (LCD) or LIGHT EMITTING DIODE (LED) for
each display segment. In Seven Segment Display all the positive
terminals (Anode) or all the negative terminals (Cathode) are
brought together to a common pin and such arrangements are
known as “Common Anode” or “Common Cathode” arrangement. In
this project we will be using Common Cathode arrangement and
Hexagonal shape of Seven Segment Display. A simplest form of
Seven Segment Display is shown in the image below:
From the above shown image, we can see that we have total 7
LEDs and we will make them glow in such a scheme that the final
image will look like a Numerical number. Now if you recall one of
our previous project tutorial which was Sequential LED Blinking
using 555 Timer, In that project, we are using a 555 Timer in
collaboration with a Shift Register. 555 timer continuously provides
clock to the Shift Register and Shift Register gives data to its output
pins in parallel manner. In today's project, we are also going to use
the same concept. We will use a 555 Timer which will continuously
provide clock to Shift Register it will enable it's pin accordingly. We
can gather this whole information into a single table and also the
sequence in which LED's will blink. Such table is called TRUTH
TABLE and it is shown in the image given below:
In the above image, '1' means ON state and '0' means OFF state of
a particular LED of Seven Segment Display. Above was a little
introduction of Seven Segment Display and now, lets move towards
Hardware and see How this beautiful display is actually formed.
You can download the complete simulation of above project by
simply clicking on the image given below:
Download Seven Segment Display Project Using 555 Timer
Seven Segment Display Using 555
Timer

First of all place all the components in your proteus workspace, as
shown in the image given below:

First of all 555 Timer is installed, after that a Shift Register is
added. 555 Timer will give clock to the Shift Register. Since we are
using common cathode arrangement. So, the 7 input pin of SSD
are connected to the output pins of Shift Register and the common
cathode pin is connected to circuit's main cathode. If you have
placed all the components in their exact positions and all the
connections are OK. then, the resultant simulation will look like as
shown in the image below:

Now if you look closely at the upper portion of the image then, you
will notice that i have added 2 buttons in the circuit. Left Button in
Button # 1 and Right Button is Button # 2.

If both the Buttons are kept open and when you will run the
simulation then, numerical values will start to come on seven
segment display. you can also see it in the below image:

Now the switching of button # 1 includes a very interesting feature.
First of all play the simulation and Digits will start to run on Seven
Segment Display and at any stage when you will press Button # 1
then Seven segment display will vanish but counting will keep on
going in the back. And when you will open the Button#1 again then
it will show that digit, up-to which counting have reached. Below is
a very interesting feature included:

During State#1 when Seven Segment Display was showing digit
no.2 , we pressed button#1 then, display vanished which can be
seen in the state#2. After that when we re-opened the switch#1
then, Seven segment display didn't show the digit no.3 but it shows
digit # 8. and this thing can be seen at state#3.

Now moving forward, the function of switch # 2 is very simple and
easy. During simulation running, when we will press the Button # 2
at any instant then, display will immediately stop at that point. So,
we can say that this project can also be used as stop watch and
button # 2 controls the stop watch. It can also be seen in the image
below:
Seven Segments Displays have a large no of applications. Some of
them are listed below:
1. Digital Clocks.
2. Electronic Meters.
3. Basic Calculators.
4. Electronic Devices to Display Numerical Values. (Generally
14-segments or 16-segments display is used to display full
alphanumeric values).
Alright friends, that’s all for today, I hope I have conveyed some
knowledge and helped you people in some way. If you have some
queries, then ask in comments. Subscribe us via email to get these
tutorials straight in your inbox. Till next tutorial, take care and be
safe !!! :)


Angle Control of Servo Motor with 555 Timer
Angle Control of Servo Motor using 555
Timer in Proteus ISIS
Today we are going to share our new project’s tutorial which is Angle Control of Servo Motor using 555 Timer in Proteus
ISIS. It is a very simple but a ....
Posted at: 28 - Apr - 2015
Category: 555 Timer
Author: syedzainnasir
0 Comments
Departments:
1. Electronics Engineering
2. Mechatronics Engineering
Components:
1. 555 Timer
2. LEDs
3. Resistor
Softwares:
1. Proteus
Hello friends, hope you all are
fine and enjoying. Today we are going to share our new project’s
tutorial which is Angle Control of Servo Motor using 555 Timer in
Proteus ISIS. It is a very simple but a bit technical project. This
project has various applications both in industry and in small
educational projects.
Servo motor is a DC operated motor and it is available in various
sizes and powers. Generally the servo motor used in basic projects,
is named as micro servo motor. It is of small size and low power
rating. But as I stated earlier that it needs dc supply to operate but it
also needs a continuous pulse train to operate and this pulse is
commonly generated by some sort of timers or micro controllers.
Since my today’s project tutorial (Angle Control of Servo Motor
using 555 Timer in Proteus ISIS) is of basic level so, we will be
using 555 timer to generate the continuous pulse train or PWM.
Now let’s move towards hardware but dear friends, always
remember that to become a technical person, you must have to
perform technical work by yourself.
Angle Control of Servo Motor using
555 Timer in Proteus ISIS

First of all, place the components in your Proteus workspace, as
shown below in image.

A 555 timer is an 8 pin IC. Pin # 6 is called threshold pin and for
555 timer threshold level is 5 volts.

So, 555 timer will trigger above 5 volts and it will generate output
which can be collected from pin # 3 represented as ‘Q’ which is
output pin of 555 timer.

After that the output pulse is sent to servo motor through a
Transistor which is BC547.

BC547 is basically a NPN transistor and the pulse signal is sent to
servo motor through its Emitter.

The full angle deflection of servo motor is from -180 degrees to
+180 degrees. It can’t rotate through full 360 degrees. Now it’s
your own choice that either you want to rotate the motor at one
particular angle or at multiple angles or to get full rotation.

Since in this tutorial (Angle Control of Servo Motor using 555
Timer), we are going to get full deflection of motor so, we have
inserted 2 switches in the circuit. The complete circuit will look like:

Switch # 1 will rotate the servo motor to 180 degrees in anticlockwise direction. We will press the button only once and when
the motor completes its rotation, it will automatically stop.

After that if we press the switch # 2, then it will rotate the servo
motor in clockwise direction and again after completing the angle,
motor will again stop.

If you have connected the components in correct order and when
you will run it, the exact simulation will look like as shown:

Sonow, if you have a close look on the above two iages then you
can see in theState # 1 image I have pressed the left button and
the servo motor is moved to -90 degree, this -90 is also mentioned
in the green LEDbox just below servo motor.

And in State # 2, I have pressed the right button and thus the
motor is moved to +90 degrees. That's how it will work.

You can Download the simulation of Angle Control of Servo Motor
Project Using 555 Timer in Proteus ISIS, by clicking on below
button:
Download Angle Control of Servo Motor Project using 555 Timer
Alright Friends, that's all for today, In the coming posts, we will
discuss few more such projects. Till than, take care and be safe !!!
:)


Relay Control with 555 Timer
Relay Control Using 555 Timer in Proteus
ISIS
Today i am going to share my new project tutorial which is Relay Control Using 555 Timer in Proteus ISIS. Up till now, i
have explained a large no of....
Posted at: 01 - May - 2015
Category: 555 Timer
Author: syedzainnasir
0 Comments
Departments:
1. Electronics Engineering
2. Mechatronics Engineering
Components:
1. 555 Timer
2. LEDs
3. Resistor
Softwares:
1. Proteus
Hello friends, I hope you all are
fine and enjoying yourself. Today I am going to share my new
project tutorial which is Relay Control Using 555 Timer in Proteus
ISIS. We all know about relays that are used for automatic
switching and are magnetically connected while electrically
insulated. If you don't know much about relays then I think you
should first read What is a Relay? in which I have given a detailed
overview of relays and where are relays used? After reading this
post you will have a good grip over relay and today's post will be
piece of cake for you. Relays are mostly used with some
microcontrollers like Arduino or PIC Microcontroller. You might also
wanna have a look at traffic Signal Control using 555 Timer, which
is good if you are interested in learning 555 Timer.
Now in today's project, it can be understood from its name (Relay
Control Using 555 Timer in Proteus ISIS), that we are going to
operate and control a Relay through 555 Timer. First of all, if we
define the relay, then we can say that 'Relay is an Electrical switch
which operates Mechanically'. You should also check this Relay
Simulation in Proteus to know how it works. Although some relays
operate automatically but since we are working on a very basic
project and we will be controlling the relay from an external mean
and for this, we will use a mechanical switch. The mechanical
switch is in fact a button and we can turn it ON or OFF according to
our own choice. It is a very simple and easy project and most of its
contents have been described in the earlier tutorials. So, I am not
going into much detail and without wasting any time, let's move
towards the Hardware of the circuit. But it's my personal advice, try
to do design this relay control using the 555 timer project yourself
and get to know the practical applications of the 555 Timer in
person. You can also download the complete simulation of above
described tutorial by simply clicking on the button given below:
Download Project Files
Where To Buy?
No. Components Distributor Link To Buy
1
555 Timer
Amazon
Buy Now
2
LEDs
Amazon
Buy Now
3
Resistor
Amazon
Buy Now
Relay Control Using 555 Timer in
Proteus ISIS

First of all place all the components in your Proteus workspace as
shown in the image given below:

Now connect supply voltage (+5 volts) to Vcc pin of 555 Timer.

At the output pin of 555 Timer, which is pin # 3, we will connect our
load. By load we mean a 5 volts relay and a simple DC motor is
connected next to the relay.

As I told you earlier that we are using a manual relay, so a simple
push Button is also connected between pin # 3 and relay.

If you have connected all the electronic components in their exact
place, then the final simulation will look like as shown in the image
given below:

If you notice the image closely, then you will observe that a Diode
is also connected in parallel with the relay coil.

A Relay contains a coil. When the voltage source is applied across
one end of the Relay and the other end is connected to the ground,
then the relay gets energized. And when we remove the source
voltages then, it still remains energized and the stored charge
tends to flow the reverse current.

The reason to connect the Diode is that it blocks the reverse
current and only allows the forward current to pass through it.

Now run the simulation, if the button is kept in the OFF state then,
the voltage will appear across the Relay but it will not operate. To
run the load, which is Motor, in this case, we will have to turn
the switch ON. This can be seen in the image given below:

As you can see in the above image, when the switch was in an ON
state, the relay gets no signal and doesn't operate. As we move
the switch from ON state to OFF state, the relay gets the signal
and it starts to operate the load.

Now after reading today's post, you must have a look at Relay
Interfacing with Microcontroller which is an advanced tutorial and
the benefit of a microcontroller is that now you can control your
relay any way you want.

Other exciting tutorials on 555 Timer include Seven segment
Control using 555 timer and Servo Motor Control using 555 Timer.

I have created a small video for this tutorial in which I have shown
how to do relay control using 555 Timer, I hope you are gonna like
it:
Alright, Friends that was all for today's tutorial about relay control
using a 555 timer. I hope, I have conveyed something new today. If
you have any questions, then don't hesitate to ask in the comments
and I will try my best to resolve them. Follow us through email to get
the tutorial straight in your inbox. Till the next tutorial, Take care and
Be Safe !!! :)


Traffic Signal Control with 555 Timer
Traffic Signal Control using 555 Timer in
Proteus ISIS
I am going to share my new project tutorial which is Traffic Signal Control using 555 Timer. Up till now i have uploaded a
no. of projects using 555 timer..
Posted at: 02 - May - 2015
Category: 555 Timer
Author: syedzainnasir
5 Comments
Departments:
1. Electronics Engineering
2. Mechatronics Engineering
Components:
1. 555 Timer
2. LEDs
3. Resistor
Softwares:
1. Proteus
Hello Friends, i hope you all are
fine and enjoying. Now i am going to share my new project tutorial
which is Traffic Signal Control using 555 Timer. Up till now i have
uploaded a no. of projects using 555 timer and i have got much
appreciation from my friends, for some 555 timer based projects
like How to use Capacitive Touch Sensor in Proteus
ISIS, Sequential LED Blinking using 555 Timer and many more.
Now i am going to share another application of 555 Timer and here
we will be using a shift register (4017) next to 555 timer to
implement Traffic Signal Control circuit. 4017 is a SERIAL IN
PARALLEL OUT shift register. Data enters in a serial manner into
register and it leaves the register in parallel manner. 4017 is a 10bit shift register and it needs a clock pulse to shift data from serial
input pin to parallel output pins. Now we need a device which can
provide continuous clock pulse to Shift Register. Clock pulse is
generated either from Micro-controllers or some sort of timers.
Here we will be using 555 Timer to generate clock pulse. It is a very
easy project to understand and also very simple to implement.
These type of projects are generally designed by the Engineering
students in their First or Second semester. Now i am done with the
theory of the circuit and now lets move towards the designing of the
project.
Engineering simulations
You can also download the complete simulation of the above
described project by simply clicking on the button given below:
Traffic Signal Control using 555 Timer
in Proteus ISIS

First of all place all the components in your proteus workspace,as
shown in the image below:

Threshold voltage for 555 Timer is 5 volts, and when voltages
exceeds this level, 555 timer triggers and it generates a output
pulse at its output pin which is ‘Q’ pin.

In this project, we will be using a battery of 12 volts as supply
voltages.Positive pin (+) of source is connected to Vcc pin of 555
Timer and the Negative pin (-) is connected to GND pin of 555
timer.

Pin#3 of 555 timer is connected to CLK pin of shift register and this
pin is the data input pin of shift register. Through this pin, 555 timer
send data to shift register.

At output pins of shift register we have connected 3 Leds, RED,
YELLOW and GREEN. Same colors which are used in Traffic
Signals.

RED led is connected to output pin#12. YELLOW LED has 2
parallel inputs that are pined at pin#10 and pin#11 respectively.
Diodes are connected the way of inputs to block reverse currents.
YELLOW led will glow if any of the input will be HIGH.

GREEN led has 4 parallel inputs connected at pin# 1,5,6,9
respectively. GREEN led has to blink for longer time, that's why we
have connected multiple inputs to it. GREEN led will keep on
glowing as along as any of the input will be HIGH.

If you connected all the components in their exact position and all
the connections are OK, then the final circuit will look like as shown
in the image below:

Now if you look the above circuit closely then, you will observe that
we have connected high valued capacitor (47uf) in the way of
trigger pin of 555 timer.

The purpose of capacitor is to produce lag in the clock generated
by 555 Timer.

Now when you will play the simulation then LED will start to glow in
periodic manner. First RED led will blink, then YELLOW led will
glow and in the end GREEN led will start to glow.

All these stages are shown in the image given below:

As you can see that state#1 represents the "STOP" state, which
means that traffic has to stop.

State#2 represents "GET READY" state and it means get ready to
GO but you are not allowed to go yet.

State#3 represents "GO" state, in which traffic is allowed to Go.
Alright friends that was all for today's project. It was a very simple
tutorial and most of its portion have been explained in previous
tutorials. So i haven't explain it in much detail. But still if you have
any problem then, don't feel shy to ask in the comments. Till next
tutorial Take Care !!! :)


Capacitive Touch Sensor with 555 Timer
How to use Capacitive Touch Sensor in
Proteus ISIS ?
Today i am going to share my new project's tutorial which is How to use Capacitive Touch Sensor in Proteus ISIS. It is a very
interesting project, and we ...
Posted at: 30 - Apr - 2015
Category: Proteus
Author: syedzainnasir
4 Comments
Departments:
1. Communication Engineering
2. Electronics Engineering
Softwares
:
1. Proteus
Hello friends, I hope you all are
fine and enjoying. Today i am going to share my new project's
tutorial which is How to use Capacitive Touch Sensor in Proteus
ISIS. It is a very interesting project, and we will be using a
555 Timer while designing this project. If you recall our previous
project tutorial which was Angle Control of Servo Motor using 555
Timer in Proteus ISIS, in which 555 timer was generating PWM
and was controlling the rotating angle of servo motor.
Now in this project, we have a little different context and now we will
be using a 555 Timer in collaboration with Capacitive Touch
Sensor. First of all, lets have a little introduction of Capacitive Touch
Sensor. Well, if we talk broadly then, in Electrical Engineering
Capacitive Touch Sensing is a Technology used in Capacitive
Coupling. Capacitive Coupling is a technology which takes Human
Body's Capacitance as an input and it measures anything which
has a potential difference or which is conductive or any static
object which has a dielectric difference from that of air. While
designing this technology, one side of the insulator is coated with
the conductive material and a very small voltage is applied to this
conductive layer. Now after applying the voltages to the conductive
layer, a uniform electrostatic field is formed. After that if any
conductor (suppose human finger) will come within the vicinity of
this field or it touches the other non coated layer of the insulating
material then a capacitor will be dynamically formed and if potential
difference between both bodies is HIGH then the current will start to
flow. That was a little introduction of Capacitive Touch Sensor, and
now lets be practical and move towards the Hardware of the Above
described tutorial.
You can download the complete simulation of above described
project by simply clicking on the button given below:
Download Simulation Files
Engineering courses
How to use Capacitive Touch Sensor in
Proteus

In this project, we are using 555 Timer in collaboration with
Capacitive Touch Sensor. A 555 timer is an 8 pin IC. Pin # 6 is
called threshold pin and for 555 timer threshold level is 5 volts.

So, 555 timer will trigger above 5 volts and it will generate output
which can be collected from pin # 3 represented as ‘Q’ which is
output pin of 555 timer.

While moving toward the simulation of project, first of all place all
the components in the proteus workspace, as shown in the image
given below:

First of all we have place Capacitive Touch Sensor and after that
we have placed a NPN transistor, then 555 Timer will come and at
the output of 555 Timer we have added a LED. The complete
circuit diagram ready for simulation is shown in the image given
below:

As long as the finger is out of the vicinity of the electrostatic field,
no potential difference occurs and the LED remains in the OFF
state.

Now if we move the finger towards Capacitive Touch Sensor, then
and when the potential difference reaches up to 0.6 volts, then 555
triggers and it generates output voltages across LED which are 5
volts but in some cases voltages are lost due to series connected
resistances. This phenomenon is shown in below image:

Now if we further move the finger and take it completely near the
sensor, then at this point max potential difference will occur
between both point (finger and conductive layer). An important
thing to note here is that, we have change the location of our
interrupt ( finger) but, same voltages are appearing across LED
which are 4.91 volts in this case. It can also seen in the figure
given below:

Now, if we summarize the whole project, then we have seen that
the movement of finger is in fact controlling our output. When the
finger was out of vicinity of the sensor, then LED was OFF. When
we moved the finger in forward direction and came in the vicinity of
Electrostatic field, then Sensor gives signal to 555 Timer and Timer
makes LED to glow.

Here's a video demonstrating Capacitive Touch Sensor in Proteus
ISIS.
Applications Of Capacitive Touch
Sensor
Capacitive sensing touchscreens are now a days commonly used in
Digital Audio Players, Mobile Phones and Tablet Computers.
Capacitive touch sensors also have the ability to replace
Mechanical Buttons. Back in 1928 Russians invented a music
instrument known as "Theremin" , in which The Instrument Player
was able to control the volume and pitch of the sound without
physically touching the instrument. Capacitive Touch Sensors are of
basic level but they are back bone of large industrial projects and
are widely used in designing some other sensors like:
1. Position sensor.
2. Humidity sensor.
3. Fluid or Water level sensor.
4. Proximity sensor etc..
Alright friends, that’s all for today, I hope I have conveyed some
knowledge and helped you people in some way. If you have some
queries, then ask in comments. Subscribe us via email to get these
tutorials straight in your inbox. Till next tutorial, take care and be
safe !!! :)


Circuit Diagram of IR Sensor with 555 Timer
Circuit Diagram of IR Sensor using 555
Timer
Today's tutorial is quite simple and we will have a look at circuit diagram of IR sensor using 555 Timer. There are different
types of IR sensors ...
Posted at: 16 - Sep - 2015
Category: 555 Timer
Author: syedzainnasir
13 Comments
Departments:
1. Electronics Engineering
2. Mechatronics Engineering
Components:
1. 555 Timer
2. LEDs
3. Resistor
Softwares:
1. Proteus
Hello everyone, hope you all are
fine and having fun with your lives. Today's tutorial is quite simple
and we will have a look at circuit diagram of IR sensor using
555 Timer. There are different types of IR sensors available in the
market. IR is abbreviation of infrared and so they use infrared ray
for detection of objects. There are many types of IR sensors with
different functionality, but in all of them infrared rays are omitted
from transmitter and are received by the receiver. and using these
ray we can say whether an object is placed in the path or not.
Today we are gonna see how to design your own IR sensor using
555 Timer. We can also interface these IR sensors quite easily with
any microcontroller like PIC Microcontroller , Arduino etc. I was also
thinking of designing it in Proteus but Proteus doesn't have the IR
leds in it so I couldn't do it. IR sensors available in market are quite
costly ranging from 10$ to 100$ obviously they are also excellent in
efficiency but in engineering cost efficiency also plays an important
role so today we are gonna have a look at circuit diagram of IR
sensor using 555 timer which will cost you just $2. Before going into
the details, lets first have a look at types of IR sensors.
Free engineering tools
Types of IR sensors

There are normally two types of IR sensors available in market.

First Type of IR Sensors:
First type is transceiver IR sensor which has both transmitter and
receiver in it. This type of IR sensor is used to detect the distance
of object from the sensor.

In this type of IR sensors, rays are omitted from the transmitter and
are reflected back after hitting some object and are captured by the
receiver.

On the basis of the time taken by these rays to reflected back, we
calculate the distance of the object from the sensor.

Second Type of IR Sensors:
In these types of IR sensors, transmitter and receiver are not on
same chip but on seperate pieces.

These types of IR sensors are used for detection of object.

For example we need to count people entering in some room then
we will place this IR sensor on the door of that room with
transmitter on one end and receiver on the other.

So, now when some one will enter through the door , he will cut the
IR beam and thus the IR light wont be received by the receiver and
thus the sensor will know that someone entered.

These types of IR sensors are also used in electronic devices like
TV remote etc.
In this tutorial we are gonna design this second type of IR sensor
using 555 timer. so, lets get started.
Circuit Diagram of IR Sensor using 555
Timer

So, here we are gonna design the second type of IR sensor using
555 timer.

In this sensor we need to design both the transmitter and the
receiver.

So, lets get started the transmitter.

Design the below circuit on some circuit board:

In the above circuit diagram of IR sensor, I have clearly mentioned
all the values of components so that you can easily design it.
Moreover there are two leds used in it, these are not simple leds.
There are IR leds which emits IR rays. the range of this sensor will
depend roughly on the number of leds you are gonna use here, as
I used two leds.

So, now lets have a look at circuit diagram of receiver side.

On this side we have use IR led but that one is receiving and will
received that IR rays coming from the transmitter IR leds.

These are quite simple in designing and you can design it without
any trouble. Before going into PCB, its better if you first design
them on some wero board or bread board.

Here's a manufactured piece of the above given circuit diagrams.
The one with two leds is the transmitter and the other one is
receiver.

The image is a bit blur, coz I was in a bit of hurry but they work
perfectly fine. :)

That's all for today, will see you guys in the next tutorial. Till then
take care!!!

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