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
