Make: Robotic Arms

91Chapter 5: The Joy of Joysticks

STEP 4: WRITING A SIMPLE JOYSTICK SERVO CONTROL SKETCH

#include <Servo.h>

Servo servoOne;

Servo servoTwo;

int joyX;

int joyY;

void setup() {

Serial.begin(9600);

servoOne.attach(3);

servoTwo.attach(5);

}

void loop() {

joyX = analogRead(A0);

joyX = map(joyX, 0, 1023, 90, 135);

joyY = analogRead(A1);

joyY = map(joyY, 0, 1023, 45, 90);

Serial.print("Joystick X Value:");

Serial.print(joyX);

Serial.print(" Joystick Y Value:");

Serial.println(joyY);

servoOne.write(joyX);

servoTwo.write(joyY);

delay(100);

}

Once the code is compiled and uploaded, you should see the two joints of

your robotic arm come to life—the joints of your robotic arm will ...