class VariablePump: def __init__(self, step_pin): self.stepper = Stepper(step_pin, None) self.isRunning = False self.maxSpeedDelay = 100 self.minSpeedDelay = 2000 self.setSpeed(0) # speed is float between 0 - 1 def setSpeed(self, speed): assert (speed <= 1) and (speed >= 0) speedRange = self.minSpeedDelay - self.maxSpeedDelay speedDelay = self.minSpeedDelay - (speedRange * speed) self.stepper.set_step_time(speedDelay) # do not use outside of the class def __loop(self): while self.isRunning: self.stepper.steps(1000) def startMotor(self): self.isRunning = True _thread.start_new_thread(self.__loop, ()) def stopMotor(self): self.isRunning = False
class PrecisionPump: def __init__(self, step_pin, dir_pin): self.stepper = Stepper(step_pin, dir_pin) self.stepper.set_step_time(750) self.dir = 1 self.stepsPerML = 5680 #TODO: determine proper amount def feed(self, ml_amount): stepsToTake = ml_amount * self.stepsPerML * self.dir self.stepper.steps(stepsToTake) # just for testing def step(self, steps): self.stepper.steps(steps) def reverse(self): self.dir = 1 if self.dir == 1 else -1