Circuit Documentation

Summary

This circuit integrates a servo motor, an HC-SR04 ultrasonic sensor, and an Arduino Mega 2560 microcontroller to perform tasks that likely involve distance measurement and motion control. The circuit is powered by a 12v power supply, which is stepped down to a lower voltage suitable for the microcontroller and peripherals using an XL4015 5A DC Buck Step-down converter. The servo is controlled by the Arduino through a PWM signal, and the ultrasonic sensor is interfaced with the Arduino for triggering and echo response capture.

Component List

Servo

• Description: A motor capable of precise position control.
• Pins:
  • GND (Ground)
  • VCC (Power Supply)
  • Pulse (Control Signal)

12v Power Supply

• Description: Provides the primary power for the circuit.
• Pins:
  • • (Positive Supply)
  • • (Ground)

XL4015 5A DC Buck Step-down Converter

• Description: Steps down the voltage from the power supply to a lower level.
• Pins:
  • Output + (Positive Output)
  • Output - (Ground Output)
  • Input + (Positive Input)
  • Input - (Ground Input)

HC-SR04 Ultrasonic Sensor

• Description: Measures distances by emitting ultrasonic waves and detecting their reflections.
• Pins:
  • VCC (Power Supply)
  • TRIG (Trigger Signal)
  • ECHO (Echo Signal)
  • GND (Ground)

Arduino Mega 2560

• Description: A microcontroller board based on the ATmega2560.
• Pins: Multiple I/O pins including power, ground, analog, and digital pins.

Comments

• Description: Placeholder for additional notes or comments in the circuit.

Wiring Details

Servo

• GND: Connected to the ground net.
• VCC: Connected to the 5V net from the step-down converter.
• Pulse: Connected to pin D22 on the Arduino Mega 2560.

12v Power Supply

• +: Connected to the input + of the XL4015 step-down converter.
• -: Connected to the input - of the XL4015 step-down converter.

XL4015 5A DC Buck Step-down Converter

• Output +: Connected to the 5V net supplying power to the Arduino Mega 2560, Servo, and HC-SR04 sensor.
• Output -: Connected to the ground net.
• Input +: Connected to the + of the 12v power supply.
• Input -: Connected to the - of the 12v power supply.

HC-SR04 Ultrasonic Sensor

• VCC: Connected to the 5V net from the step-down converter.
• TRIG: Connected to pin D26 on the Arduino Mega 2560.
• ECHO: Connected to pin D28 on the Arduino Mega 2560.
• GND: Connected to the ground net.

Arduino Mega 2560

• 5V: Connected to the 5V net from the step-down converter.
• GND: Connected to the ground net.
• D22: Connected to the pulse pin of the Servo.
• D26: Connected to the TRIG pin of the HC-SR04 sensor.
• D28: Connected to the ECHO pin of the HC-SR04 sensor.

Documented Code

Arduino Mega 2560 - sketch.ino

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

}

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

}

Arduino Mega 2560 - documentation.txt

(No additional documentation provided)