Circuit Documentation

Summary

This circuit consists of an Arduino UNO microcontroller, four servos, four potentiometers, and a 9V battery. The potentiometers are used to control the position of the servos. The Arduino reads the analog values from the potentiometers and maps these values to servo positions, which are then sent to the servos to control their movement.

Component List

9V Battery

• Description: Provides power to the circuit.
• Pins: +, -

Servo

• Description: Actuator that rotates to a specific position based on the input pulse width.
• Pins: gnd, vcc, pulse

Potentiometer

• Description: Variable resistor used to provide an adjustable voltage output.
• Pins: GND, Output, VCC

Arduino UNO

• Description: Microcontroller used to read analog inputs from the potentiometers and control the servos.
• 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

Wiring Details

9V Battery

• + connected to:

  • Potentiometer VCC (4 instances)
  • Servo vcc (3 instances)

• - connected to:

  • Potentiometer GND (4 instances)
  • Servo gnd (4 instances)

Servo

• gnd connected to:

  • 9V Battery - (4 instances)

• vcc connected to:

  • 9V Battery + (3 instances)
  • Potentiometer VCC (1 instance)

• pulse connected to:

  • Arduino UNO D12 (1 instance)
  • Arduino UNO D11 (1 instance)
  • Arduino UNO D10 (1 instance)
  • Arduino UNO D9 (1 instance)

Potentiometer

• GND connected to:

  • 9V Battery - (4 instances)

• Output connected to:

  • Arduino UNO A3 (1 instance)
  • Arduino UNO A1 (1 instance)
  • Arduino UNO A2 (1 instance)
  • Arduino UNO A0 (1 instance)

• VCC connected to:

  • 9V Battery + (4 instances)
  • Servo vcc (1 instance)

Arduino UNO

• D12 connected to:

  • Servo pulse (1 instance)

• D11 connected to:

  • Servo pulse (1 instance)

• D10 connected to:

  • Servo pulse (1 instance)

• D9 connected to:

  • Servo pulse (1 instance)

• A3 connected to:

  • Potentiometer Output (1 instance)

• A1 connected to:

  • Potentiometer Output (1 instance)

• A2 connected to:

  • Potentiometer Output (1 instance)

• A0 connected to:

  • Potentiometer Output (1 instance)

Code Documentation

#include <Servo.h>

Servo servo1;
Servo servo2;
Servo servo3;
Servo servo4;

const int potPin1 = A0;
const int potPin2 = A1;
const int potPin3 = A2;
const int potPin4 = A3;

const int servoPin1 = 9;
const int servoPin2 = 10;
const int servoPin3 = 11;
const int servoPin4 = 12;

void setup() {
  servo1.attach(servoPin1);
  servo2.attach(servoPin2);
  servo3.attach(servoPin3);
  servo4.attach(servoPin4);
}

void loop() {
  int potValue1 = analogRead(potPin1);
  int potValue2 = analogRead(potPin2);
  int potValue3 = analogRead(potPin3);
  int potValue4 = analogRead(potPin4);

  int servoPos1 = map(potValue1, 0, 1023, 0, 180);
  int servoPos2 = map(potValue2, 0, 1023, 0, 180);
  int servoPos3 = map(potValue3, 0, 1023, 0, 180);
  int servoPos4 = map(potValue4, 0, 1023, 0, 180);

  servo1.write(servoPos1);
  servo2.write(servoPos2);
  servo3.write(servoPos3);
  servo4.write(servoPos4);

  delay(15); // Small delay to allow servos to reach the position
}

This code initializes four servo objects and four potentiometer pins. In the setup function, each servo is attached to a specific digital pin on the Arduino. In the loop function, the analog values from the potentiometers are read, mapped to a range suitable for the servos, and then written to the servos to control their positions. A small delay is added to allow the servos to reach their positions smoothly.