Code used:
/*
- MotorKnob
* - A stepper motor follows the turns of a potentiometer
- (or other sensor) on analog input 0.
* - http://www.arduino.cc/en/Reference/Stepper
- This example code is in the public domain.
*/
#include <Stepper.h>
// change this to the number of steps on your motor
#define STEPS 100
// create an instance of the stepper class, specifying
// the number of steps of the motor and the pins it’s
// attached to
Stepper stepper(STEPS, 8, 9, 10, 11);
// the previous reading from the analog input
int previous = 0;
void setup() {
// set the speed of the motor to 30 RPMs
stepper.setSpeed(30);
}
void loop() {
// get the sensor value
int val = analogRead(A0);
// move a number of steps equal to the change in the
// sensor reading
stepper.step(val – previous);
// remember the previous value of the sensor
previous = val;
}

In the future, I’m interested in building architecture prototypes that will change its shape in order to maximize the sunlight that goes into it during the mornings. In addition, it can alter its walls so that less sunlight hits the building at noon. This way, we could save electricity by potentially avoiding to use air conditioning.
This is a piece of art that I’m interested in. However, it uses digital displays with mechanical pieces in order to generate visual effects, while our project is mainly based on only mechanical pieces.
great documentation, Simon.
I’m looking forward to see how those buildings can interact with light and other stimulus.