Download Moisture Detector Page 1 Identifying a Need

Systems and Control - Electronics
The Moisture Detector
Tutor Group
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Moisture Detector
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Page 1 Identifying a Need
Moisture Detector
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Specification. My product must:
1
Light up when the soil is moist.
2
Have neat soldering.
3
Be assembled very neatly.
4
Have an acrylic design that is related to gardening or the seasons.
5
Have an acrylic image that is easily recognised
Page 2 Design Brief & Specification
Design Brief
I am going to design and make a moisture detector to place
in a plant pot to indicate whether the soil needs watering
or not. An LED will light up if the soil is moist. I will add
an acrylic design to place at the top to make it more
noticeable and attractive.
Moisture Detector
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Name
Date
Page 3 Electronic Circuit
Moisture Detector
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Page 4 My Electronic Circuit
Moisture Detector
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Item
Value/Type
Factsheet
1
Battery snap
PCBs
1
LED
LEDs
1
Resistor 1
470R
Resistors
1
Resistor 2
1K2
Resistors
1
Resistor 3
1K
Resistors
1
Transistor
BFY51
Transistors
Page 5 Real-life & Track Diagrams
No.
Moisture Detector
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Page 6 Flow Chart of Etching Process
Moisture Detector
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Page 7 Acrylic Backing Designs
Moisture Detector
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Page 8 Vacuum Forming the Product
Moisture Detector
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Page 9 Flow Chart of Soldering Process
Page 10 Evaluation
Moisture Detector
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PHOTOGRAPH
OF
FINISHED
PRODUCT
Moisture Detector
Class
Name
Date
Photo-sensitive
Battery snap
Printed Circuit Board (PCB)
Brainstorm
Resistor
CAD
Resistor colour code
CAM
Roland vinyl cutter
Circuit diagram
Side snips
CNC
Sodium hydroxide
Copper track
Solder wire
Design Brief
Soldering
Etching
Soldering iron
Ferric chloride
Specification
Helping hands
Thermoplastic
High density polystyrene
Transistor
Laser cutter
Ultra violet light box
Light emitting diode (LED)
Universal systems diagram
Long-nosed pliers
User
Mask
Vacuum former
Mini drill
Needs
Page 11 Special Vocabulary
Acrylic