Circuit Documentation

Summary

This circuit involves three Arduino UNO microcontrollers, a buzzer, a red LED, three resistors, an ADXL345 accelerometer, and a 16x2 I2C LCD. The components are interconnected to perform various functions, including driving the LED and buzzer, and displaying data on the LCD.

Component List

1. 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

2. Buzzer

   • Description: A simple piezoelectric buzzer.
   • Pins: PIN, GND

3. LED: Two Pin (red)

   • Description: A red LED with two pins.
   • Pins: cathode, anode

4. Resistor (200 Ohms)

   • Description: A resistor with a resistance of 200 Ohms.
   • Pins: pin1, pin2

5. Resistor (220 Ohms)

   • Description: A resistor with a resistance of 220 Ohms.
   • Pins: pin1, pin2

6. ADXL345

   • Description: A 3-axis accelerometer.
   • Pins: GND, VCC, CS, INT1, INT2, SDO, SDA, SCL

7. 16x2 I2C LCD

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

Wiring Details

Arduino UNO

• D13 is connected to:

  • Resistor (220 Ohms) pin1
  • Another Arduino UNO D13

• D12 is connected to:

  • Buzzer PIN

• GND is connected to:

  • Buzzer GND
  • LED cathode
  • ADXL345 GND
  • 16x2 I2C LCD GND

• 5V is connected to:

  • ADXL345 VCC
  • 16x2 I2C LCD VCC

Buzzer

• PIN is connected to:

  • Arduino UNO D12

• GND is connected to:

  • Arduino UNO GND
  • LED cathode
  • ADXL345 GND
  • 16x2 I2C LCD GND

LED: Two Pin (red)

• cathode is connected to:

  • Arduino UNO GND
  • Buzzer GND
  • ADXL345 GND
  • 16x2 I2C LCD GND

• anode is connected to:

  • Resistor (220 Ohms) pin2

Resistor (220 Ohms)

• pin1 is connected to:

  • Arduino UNO D13

• pin2 is connected to:

  • LED anode

ADXL345

• GND is connected to:

  • Arduino UNO GND
  • Buzzer GND
  • LED cathode
  • 16x2 I2C LCD GND

• VCC is connected to:

  • Arduino UNO 5V
  • 16x2 I2C LCD VCC

• SDA is connected to:

  • 16x2 I2C LCD SDA

• SCL is connected to:

  • 16x2 I2C LCD SCL

16x2 I2C LCD

• GND is connected to:

  • Arduino UNO GND
  • Buzzer GND
  • LED cathode
  • ADXL345 GND

• VCC is connected to:

  • Arduino UNO 5V
  • ADXL345 VCC

• SDA is connected to:

  • ADXL345 SDA

• SCL is connected to:

  • ADXL345 SCL

Documented Code

Arduino UNO 1

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

}

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

}

Arduino UNO 2

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

}

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

}

Arduino UNO 3

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

}

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

}