Make: Volume 93

OKAY ROBOT Inverse Kinematics Drawbot

found in Figure

C

. Connect the red wires of both

servos to the positive rail on the breadboard, and

the black wires to the negative rail. Connect the

yellow wire for servo 1 to digital pin 3, and the

yellow wire for servo 2 to digital pin 5. Connect

the GND pin on the Arduino to the negative rail on

the breadboard. Lastly, connect the positive and

negative rails to the 5V 2A power supply.

5. We can now write a quick Arduino sketch to set

both servos to a starting position of 90 degrees:

#include <Servo.h>

Servo servoOne;

Servo servoTwo;

void setup() {

servoOne.attach(3);

servoTwo.attach(5);

}

void loop() {

servoOne.write(90); ...