Make: Robotic Arms

156 Make: Robotic Arms

int motorSelector = 1;

int btnVal;

void setup() {

Serial.begin(9600);

pinMode(13, INPUT_PULLUP);

}

void loop() {

btnVal = digitalRead(13);

if(btnVal == LOW){

motorSelector++;

delay(250);

}

if(motorSelector == 6){

motorSelector = 1;

}

Serial.print("Active Motor: ");

Serial.println(motorSelector);

}

Here, our first variable is our motor-selection variable, and we give it an

initial value of 1 because we’d like to default to controlling motor 1 whenever

the program begins. Next, we have a variable to store and keep track of the

info coming from our button.

Inside the void setup, all we need to do is start the Serial Monitor to make

sure our ...