On 30/04/2026 15:37, Terry Coles wrote:
To clarify this, the code below is what is in Github from four years
ago, eg when it all worked. Back then the sensor was only triggered
when a train went over the sensor, whereas, the current setup all the
sensors are triggered /until/ a train passes.
The current code therefore removes the 'not' in the if statement.
i = sensor_test_loops_out # Set the loop
counter to give the required time testing for the sensor
while i >= 0:
i = i -1
if not GPIO.input(sensor_b):
time.sleep(sensor_pause_time)
else:
print ("Sensor B Activated")
break
Unless I am battier than I thought, the while loop should continue until
the signal goes low. Any dissenters?
--
Terry Coles
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