Circuit Documentation

Summary

The circuit consists of an Arduino UNO microcontroller interfaced with two Tower Pro SG90 servos and a joystick module. The servos are controlled by the Arduino, which reads the joystick's position to determine the servo angles. A 5V battery provides power to the system, ensuring that the servos and the joystick module have a stable voltage supply.

Component List

Arduino UNO

• Microcontroller board based on the ATmega328P
• It has 14 digital input/output pins, 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header, and a reset button.

Tower Pro SG90 Servo (x2)

• A small and lightweight servo motor capable of precise control
• It operates on 4.8V to 6V and offers good torque for its size.

Joystick Module

• An input device that can measure two-dimensional movement (X and Y axis)
• It typically includes a push button (not used in this circuit) and two potentiometers to measure the stick's position.

5V Battery

• Power source for the circuit
• Provides a stable 5V supply to the components.

Wiring Details

Arduino UNO

• GND connected to the negative terminal of the 5V battery and ground pins of other components.
• A0 connected to the VRX pin of the Joystick module to read the X-axis position.
• A1 connected to the VRY pin of the Joystick module to read the Y-axis position.
• D6 connected to the Signal pin of one Tower Pro SG90 servo.
• D7 connected to the Signal pin of the other Tower Pro SG90 servo.

Tower Pro SG90 Servo

• Signal pin connected to the corresponding digital pin on the Arduino UNO for control signals.
• +5V pin connected to the positive terminal of the 5V battery.
• GND pin connected to the ground network.

Joystick Module

• VRX connected to A0 on the Arduino UNO to read the X-axis position.
• VRY connected to A1 on the Arduino UNO to read the Y-axis position.
• VCC connected to the positive terminal of the 5V battery.
• GND connected to the ground network.

5V Battery

• + terminal connected to the VCC or +5V pins of the Joystick module and both Tower Pro SG90 servos.
• - terminal connected to the GND pins of the Arduino UNO, Joystick module, and both Tower Pro SG90 servos.

Documented Code

// Code for controlling servos with a joystick using an Arduino UNO
const int xPin = A0, yPin = A1;
float xValue, yValue;

void setup() {
  pinMode(xPin, INPUT);
  pinMode(yPin, INPUT);
  Serial.begin(9600);
}

void loop() {
  xValue = analogRead(xPin);
  yValue = analogRead(yPin);

  Serial.print("Value of x-axis: ");
  Serial.println(xValue);
  Serial.print("Value of y-axis: ");
  Serial.println(yValue);

  delay(100);
}

This code initializes the Arduino to read the X and Y positions of the joystick and outputs the values to the serial monitor. The analog pins A0 and A1 are configured as inputs to read the voltage variations as the joystick is moved. The Serial.begin(9600); line sets up the serial communication at a baud rate of 9600. The loop() function continuously reads the joystick's position and prints the values to the serial monitor. The delay(100); line introduces a 100ms delay between each reading to make the output readable.