Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfacing with a 1 Channel 5V Relay Module, an HC-SR04 Ultrasonic Sensor, a Tower Pro SG90 servo, and a DC Motor. The Arduino UNO controls the relay, servo, and ultrasonic sensor to perform various tasks, including motor control and distance measurement.

Component List

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

1 Channel 5V Relay Module

• Description: A relay module that allows control of high voltage devices with a low voltage signal.
• Pins: VCC+, VCC- (GND), IN, N.O., COM, N.C.

HC-SR04 Ultrasonic Sensor

• Description: An ultrasonic sensor used for distance measurement.
• Pins: VCC, TRIG, ECHO, GND

Tower Pro SG90 Servo

• Description: A small servo motor used for precise control of angular position.
• Pins: Signal, +5V, GND

DC Motor

• Description: A simple DC motor.
• Pins: pin 1, pin 2

Wiring Details

Arduino UNO

• 5V: Connected to VCC+ of the 1 Channel 5V Relay Module, VCC of the HC-SR04 Ultrasonic Sensor, +5V of the Tower Pro SG90 Servo, and pin 2 of the DC Motor.
• GND: Connected to VCC- (GND) of the 1 Channel 5V Relay Module, GND of the HC-SR04 Ultrasonic Sensor, and GND of the Tower Pro SG90 Servo.
• D13: Connected to IN of the 1 Channel 5V Relay Module.
• D11: Connected to Signal of the Tower Pro SG90 Servo.
• D9: Connected to TRIG of the HC-SR04 Ultrasonic Sensor.
• D8: Connected to ECHO of the HC-SR04 Ultrasonic Sensor.

1 Channel 5V Relay Module

• VCC+: Connected to 5V of the Arduino UNO.
• VCC- (GND): Connected to GND of the Arduino UNO.
• IN: Connected to D13 of the Arduino UNO.
• N.O.: Connected to +5V of the Tower Pro SG90 Servo, pin 2 of the DC Motor, and VCC of the HC-SR04 Ultrasonic Sensor.
• COM: Connected to pin 1 of the DC Motor.

HC-SR04 Ultrasonic Sensor

• VCC: Connected to 5V of the Arduino UNO.
• TRIG: Connected to D9 of the Arduino UNO.
• ECHO: Connected to D8 of the Arduino UNO.
• GND: Connected to GND of the Arduino UNO.

Tower Pro SG90 Servo

• Signal: Connected to D11 of the Arduino UNO.
• +5V: Connected to 5V of the Arduino UNO.
• GND: Connected to GND of the Arduino UNO.

DC Motor

• pin 1: Connected to COM of the 1 Channel 5V Relay Module.
• pin 2: Connected to +5V of the Tower Pro SG90 Servo, N.O. of the 1 Channel 5V Relay Module, and VCC of the HC-SR04 Ultrasonic Sensor.

Code Documentation

Arduino UNO Code

sketch.ino

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

}

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

}

documentation.txt