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Circuit Creations Vibration Sensor Kit 107 Introduction Welcome to the exciting world of Circuit Creations electronics kits. To assemble this kit you will need the following basic items- 25W to 40W soldering iron, rosin core flux solder, diagonal cutters to trim excess lead length after soldering, and needle nose pliers for lead bending. The central component of this kit is the PIC16F1826 microcontroller. The extensive capabilities of this microcontroller have been pre-programmed to provide a versatile vibration sensor. This kit is a great building block for projects to create a vibration sensitive switch, a remote controlled switch, intruder alarm, wind detection, motion detection, a gaming application… Your imagination is the limit for what can be done with this kit. Vibration Sensor K107 Features Switch selectable sensitivity LED indicator for vibration detection Switch selectable momentary or toggle output mode Small, 2.2” x 1.7”, double sided Printed Circuit Board (PCB) with mounting holes Dedicated output is activated when vibration is sensed and remains latched until reset All microcontroller signals are accessible with through-hole pads at the edge of the PCB Add your own circuits with surface mount and through-hole component prototyping section included on the PCB Wide input voltage range (2.7V to 12V) with very low stand-by power, suitable for battery operation Open collector output for connection to higher power circuits and relays Circuit Assembly The assembly instructions for the components that are included with Kit 107 are as follows: Designator Value U1 U2 U3 U4 U5 U6 PIC16F1826 MCP1702 ------------Vibe Sensor S1 C1,C2 R1 R2 R3 R4 R5 R6 LED1 Q1 D1 Dip Switch-4 1uF Capacitor 68 ohm resistor 1.2K resistor --------330 ohm resistor 68K resistor Red LED 2N3904 Transistor 1N4448 Diode D2,D3 SD101C Diode Assembly Instructions Notch in package must match notch printed on the PCB, or dot on top of package must be on the same side as the square pad on the PCB. Flat side of package and flat side marking on PCB must match. Not Used. Not Used. Not Used. Polarity does not matter. Install this component last and do not bend. Pin one of the package goes in the square pad with dot printed next to it. There will be 2 rows of 4 unused PCB pads for this package. Polarity does not matter. Blue-Gray-Black. Brown-Red-Red. Not Used. Not Used. Orange-Orange-Brown. Blue-Gray-Orange. Shorter lead of LED goes in the hole with square pad on the PCB. Flat side of package and flat side marking on PCB must match. Band on package must match up with line on the PCB. Band on package must match up with line on the PCB. Supplied in a 2 diode strip. Not all component locations on the PCB have components installed for this kit and are “Not Used”. See www.circuitcreations.com for general assembly helpful hints. Vibration Sensor Kit 107 Page 1 of 3 www.circuitcreations.com Circuit Creations Operation Do not use the K107 vibration sensor with any life support system or any other application where unintended operation might cause harm to people or damage property. Always exercise caution when connecting the K107 circuit to any other circuit. Connect a DC voltage, such as a power supply, battery, or Circuit Creations Power Supply Kit 101, between 3 Volts to 12 Volts to the VIN and GND inputs of J1. The operating mode for the Vibration Sensor is determined by switch S-1 settings listed in TABLE 1. Mode S1-1 S1-2 Momentary Active, Reduced Sensitivity ON ON Toggle Active, Reduced Sensitivity OFF ON Momentary Active, Maximum Sensitivity ON OFF Toggle Active, Maximum Sensitivity OFF OFF TABLE 1 – Switch S1 Settings. X = Don’t Care S1-3 X X X X S1-4 X X X X When switch S1-1 is ON the outputs are active as long as vibration is detected and remains on for about 200mS after the vibration sensor no longer detects vibration. When S1-1 is OFF the outputs will toggle each time vibration is sensed. For cases where there is too much sensitivity so that the circuit is activating unintentionally, S1-2 can be turned on to reduce the sensitivity. The characteristics of the vibration sensor can be altered by attaching a small mass to the end of the sensor such as a small amount of bees wax. Sensitivity can be increased by adding length to the vibration sensor such as with a small post-it-note. In this configuration the vibe sensor can detect very light breezes or wind currents that move the post-it-note. There are 3 active outputs for this circuit. OUTPUT PAD LED RA2 The LED output illuminates the red ACTIVE LED depending on the operating mode determined by switch S1. RA3 The LCH output is initially low when the circuit is powered up and will be set to a high of 2.5V when vibration is sensed. The LCH output will remain high until it is reset by either removing power from J1, or changing any of the S1 switch settings. LCH OC_OUT OC_OUT OUTPUT DESCRIPTION The OC_OUT output is an open collector output that is normally open (i.e. high impedance) and is active low depending on the operating mode determined by switch S1. The OC_OUT output can be used to connect to higher power circuits such as a relay. TABLE 2 – Circuit Output Descriptions The PCB for this kit has been designed to allow for flexibility and experimentation. All of the pins of the microcontroller are accessible by through-hole pads on the edge of the PCB allowing integration into your project. A prototyping area with 40 available through-hole pads on 0.1 inch centers and an array of 119 surface mount pads spaced for common device packages including access to VDD and GND is provided for your own circuit design additions. ENJOY!! Vibration Sensor Kit 107 Page 2 of 3 www.circuitcreations.com Circuit Creations Schematic Vibration Sensor Kit 107 Page 3 of 3 www.circuitcreations.com