David Bike Controller.ino

David Bike Controller.ino

/* Send an RC-style PWM signal to motor controller
 * given analog input. 2 inputs to permit joystick
 *
 * Designed for use on ATTiny85 w/ Arduino
 */
#include <Servo.h>

#define PIN_PWM 0       // motor controller pin
#define PIN_IN A1       // analog input pin

#define DEADBAND 16     // deadband for analog value when mapped from 0 to 1023
#define DELAYMS 20      // delay between loop runs

Servo motor;            // RC servo object
int val;                // val is position of joystick

void setup() {
    pinMode(PIN_IN, INPUT);
    motor.attach(PIN_PWM);
}

void loop() {
    val = analogRead(PIN_IN);                      // read PIN_IN value
    val = (abs(val - 512) <= DEADBAND ) 0 : val;   // apply dead band filter

    motor.write(map(val, 0, 1023, 0, 180));        // send val to motor

    delay(DELAYMS);
}