Fritzing

Connecting a stepper to USB host shield!

Code:

//declare pins int potPin = 1; int Step_X = 13; int Dir_X = 12; int Enable_X = 8;

//declare values int Speed_X = 0; //step speed (delay between steps)
int val= 0; int j = 0;

void setup() { pinMode(Step_X, OUTPUT); pinMode(Dir_X, OUTPUT); pinMode(Enable_X, OUTPUT);

//Serial.begin(9600); // note that serial comm can be used to debug // but it will slow down the code and slow down the stepper motor alot //(and be confusing to me) }

void loop() {

val = analogRead(potPin); // read the value from the sensor

j = val - 517; // 517 is center positions - how far from center? j = abs(j); //absolute value Speed_X = 70000/j; //This math inverts the value and scales as needed //(value found through trial and error) // The delay between steps will determine the speed of the motor // So, delay up = speed down

if (val >= 520){ digitalWrite(Enable_X,LOW); // enable digitalWrite(Dir_X, HIGH); // Set direction digitalWrite(Step_X,HIGH); delayMicroseconds(2); digitalWrite(Step_X,LOW); delayMicroseconds(Speed_X);

} if (val <= 510) { digitalWrite(Enable_X,LOW);// enable digitalWrite(Dir_X, LOW); // Other direction digitalWrite(Step_X,HIGH); delayMicroseconds(2); digitalWrite(Step_X,LOW); delayMicroseconds(Speed_X); }

if (val <=520 && val >= 510) {
digitalWrite(Enable_X,HIGH); // disable the stepper motor if the joystic is in the center } }