Make: Robotic Arms

27Chapter 1: The Foundation of Robotic Arms

STEP 1

For our next circuit, feel free to keep the servo wired up just as it was in our

previous examples. We are, however, going to swap our two push-buttons

for a potentiometer. A standard potentiometer has three pins. In this circuit

(Figure

1-31

), the two outside pins will be connected to the positive and

negative rail of the breadboard, and the middle pin will be connected to

analog pin A0 on the Arduino:

STEP 2

#include <Servo.h>

int pos;

void setup() {

Serial.begin(9600);

}

void loop() {

pos = analogRead(A0);

Serial.println(pos);

delay(100);

}

Once you have written up this next sketch, upload the code. Then, ...