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Automation, sensing and robotics • Re: Hall sensor issues

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Did a simulation here and the code seemed to work.
Simulation:
- IR sensor = 1
- HALL sensor 10 ms pulses 0->1->0 each 0.51 sec
- wheel diameter 0.7
- distance 1km

If you have other parameters, let me know.

Simulation is a thread in code, which sets output pins 21, 20 for IR, HALL sensor. Connect em to the inputs with jumper wire.

Code:

class Simulator:    """connect       SENSOR_HALL_OUT = 21    to  SENSOR_HALL_PIN = 22       SENSOR_OBJECT_OUT = 20  to  SENSOR_OBJECT_PIN = 23       """    def __init__(self):        self.SENSOR_HALL_OUT = 21        self.SENSOR_OBJECT_OUT = 20        pi.set_mode(self.SENSOR_HALL_OUT, pigpio.OUTPUT)        pi.set_mode(self.SENSOR_OBJECT_OUT, pigpio.OUTPUT)        pi.write(self.SENSOR_HALL_OUT, 0)        pi.write(self.SENSOR_OBJECT_OUT, 0)                self.thread = threading.Thread(target=self.run)        self.thread.start()            def run(self):        print("simulating sensor signal")        pi.write(self.SENSOR_OBJECT_OUT, 1)        while True:            pi.write(self.SENSOR_HALL_OUT, 1)            time.sleep(0.010)            pi.write(self.SENSOR_HALL_OUT, 0)            time.sleep(0.5)        simulator = Simulator()[/codeWhat I would change in the code: in the callback method "count_pulse", I would increment pulses only on either pos edge or negative edge.

Statistics: Posted by ghp — Thu Jan 02, 2025 9:32 pm



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