DC motors and Potentiometer (Arduino)

Albert Hodo. Tangibe User Interface, Fall 2022

Prompt:Explore motion as an output, in a form of a display or tactile feedback. Use your DC motor to create a vibration or rotational motion (e.g., pinwheels, dancing wires, etc.)

Components Used

1. Bread Board
2. Arduino Uno
3. Jump Wires
4. 1 10K Resister
5. 1 Transistor
6. 1 Capacitor
7. Batteries and Battery Pack

Process

I attached a folded paper with 2 pointed edges to the DC motor to act create a fan and used the potentiometer to control the speed on the fan.

Code

/* DC Motor with potentiometer control
 * Theory and Practice of Tangible User Interfaces
 * Fall 2022
 */
 
int motorPin = 9;
int potPin = A0;
int potVal = 0;
int motorCtrlVal = 0;
void setup() {
  pinMode(potPin, INPUT);
  pinMode(motorPin, OUTPUT);
  Serial.begin(9600);
}
void loop() {
  potVal = analogRead(potPin);
  Serial.print("potVal: ");Serial.println(potVal);
  motorCtrlVal = map(potVal, 0, 1024, 0, 255);
  Serial.print("motorCtrlVal: ");Serial.println(motorCtrlVal);
  analogWrite(motorPin, motorCtrlVal);
}

Demo

Demo with Off-center Material