Circuit Documentation

Summary

This circuit involves multiple piezo sensors, rectifier diodes, resistors, a transistor, an electrolytic capacitor, a 16x2 I2C LCD, an Arduino UNO, and power sources including a 9V battery and 18650 Li-ion batteries. The circuit is designed to interface with the Arduino UNO, which processes signals from the piezo sensors and displays information on the LCD.

Component List

Piezo Sensor

• Description: Converts mechanical energy into electrical energy.
• Pins: +, -

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

1N4007 Rectifier Diode

• Description: A general-purpose silicon rectifier diode.
• Pins: Cathode, Anode

Electrolytic Capacitor

• Description: Stores electrical energy in an electric field.
• Pins: -, +
• Properties:
  • Capacitance: 0.00001 Farads

Resistor

• Description: Limits the flow of electric current.
• Pins: pin1, pin2
• Properties:
  • Resistance: 100000 Ohms (for one instance)
  • Resistance: 10000 Ohms (for two instances)

BC547 Transistor

• Description: A general-purpose NPN transistor.
• Pins: Collector, Base, Emitter

16x2 I2C LCD

• Description: A 16x2 character LCD display with I2C interface.
• Pins: GND, VCC, SDA, SCL

18650 Li-ion Battery x 2

• Description: Rechargeable lithium-ion batteries.
• Pins: +, -

9V Battery

• Description: A standard 9V battery.
• Pins: +, -

Wiring Details

Piezo Sensor

• + connected to:
  • Anode of 1N4007 Rectifier Diode
  • Cathode of 1N4007 Rectifier Diode
• - connected to:
  • Cathode of 1N4007 Rectifier Diode
  • Anode of 1N4007 Rectifier Diode

Arduino UNO

• GND connected to:
  • Collector of BC547 Transistor
  • Anode of 1N4007 Rectifier Diode
  • pin1 of Resistor
  • • of Electrolytic Capacitor
  • GND of 16x2 I2C LCD
  • • of 9V Battery
  • • of 18650 Li-ion Battery x 2
• A0 connected to:
  • pin2 of Resistor
• D8 connected to:
  • pin2 of Resistor
• Vin connected to:
  • • of 9V Battery
  • • of 18650 Li-ion Battery x 2
• 5V connected to:
  • VCC of 16x2 I2C LCD
• A4 connected to:
  • SDA of 16x2 I2C LCD
• A5 connected to:
  • SCL of 16x2 I2C LCD

1N4007 Rectifier Diode

• Anode connected to:
  • • of Piezo Sensor
  • Cathode of 1N4007 Rectifier Diode
• Cathode connected to:
  • pin2 of Resistor
  • • of Electrolytic Capacitor
  • Anode of 1N4007 Rectifier Diode

Electrolytic Capacitor

• - connected to:
  • GND of Arduino UNO
• + connected to:
  • Cathode of 1N4007 Rectifier Diode

Resistor

• pin1 connected to:
  • GND of Arduino UNO
  • Base of BC547 Transistor
• pin2 connected to:
  • A0 of Arduino UNO
  • D8 of Arduino UNO

BC547 Transistor

• Collector connected to:
  • GND of Arduino UNO
• Base connected to:
  • pin1 of Resistor
• Emitter connected to:
  • (No connection specified)

16x2 I2C LCD

• GND connected to:
  • GND of Arduino UNO
• VCC connected to:
  • 5V of Arduino UNO
• SDA connected to:
  • A4 of Arduino UNO
• SCL connected to:
  • A5 of Arduino UNO

18650 Li-ion Battery x 2

• + connected to:
  • Vin of Arduino UNO
• - connected to:
  • GND of Arduino UNO

9V Battery

• + connected to:
  • Vin of Arduino UNO
• - connected to:
  • GND of Arduino UNO

Documented Code

Arduino UNO Code

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

This code is a basic template for the Arduino UNO. The setup() function is used to initialize any settings or configurations, and the loop() function contains the main code that runs repeatedly.