Smart Objects
What is sound?
Improvised Instrument
Does the clank of a
copper wire and
balloon count?
Out of Many One
These 4 servos are synchronized to move at the same time yet not always making the same sound. Here is a video of trials and errors as well as moments of success.
How did I make it?
With an Arduino Board, many wires, a potentiometer and 4 servos you can easily make this happen at home.
Use this code — — —
Make sure to add the ArduinoUno Library
Check Arduinio>Tools>Board and Arduino>Tools>Port , especially if you are using a MacBook, as they can be very finnicky with Gemma boards, or other wearables. To make sure that the code is uploading on your board, a green light will be flashing.
It makes it easier to have red wires for power, black to ground, and yellow for “info” as I call it.
I named my servos based on which ones I purchased, hence 2,3,4 but you will see that they are connected on the right side of your board with numbers 6,5,4.
You can adjust the potentiometer with the latter part of the code.
Play around!
#include <Servo.h> //add servo library
Servo myservo1; //creat servo object to contro a servo
Servo myservo2;
Servo myservo3;
Servo myservo4;
int potpin = 0; //analog pin used to connect the potentiometer
int val; //variable to read the value from the analog pin
void setup() {
myservo1.attach(7); // attaches the servo on pin 9 to the servo object
myservo2.attach(6);
myservo3.attach(5);
myservo4.attach(4);
}
void loop() {
val = analogRead(potpin);
val = map(val, 0, 1023, 0, 180);// scale it to use it with the servo (value between 0 and 180)
myservo1.write(val); //sets the servo position according to the scaled value
myservo2.write(val);
myservo3.write(val);
myservo4.write(val);
delay(15); // waits 15ms for the servo to get there.
}
