The electronics used in this device are very simple. The whole mechanism is driven with one motor, and we selected a stepper motor to have greater control over angular velocity. The stepper motor is controlled by a stepper motor driver, and both of these are powered from a 12V DC power supply. An Arduino Uno runs simple code to pulse the stepper motor through the driver.
Arduino Code
#define pulsePin 3
#define dirPin 4
#define optoPin 5
#define enablePin 6
#define pulseDelay 400
void setup() {
pinMode(pulsePin, OUTPUT);
pinMode(dirPin, OUTPUT);
digitalWrite(dirPin, HIGH);
digitalWrite(optoPin, HIGH);
digitalWrite(enablePin, HIGH);
}
void loop() {
digitalWrite(pulsePin, LOW);
delayMicroseconds(pulseDelay);
digitalWrite(pulsePin, HIGH);
delayMicroseconds(pulseDelay);
}
Download Code: rmd_project_stepper_code.ino