Fanshim should stop, but isn't

@bigbeau wrote:

My fanshim never really quite worked from the start, and I haven’t been able to find a solution to any problems that are quite like mine.

When not running the automatic.py script, the LED stays off and the fan stays in dummy mode (just cooling). This is as expected.

When running the automatic.py script, however, the LED comes on but the fan does not turn off when well below the off threshold. The LED changes color as the pi heats up, but the fan never stops spinning.

Here is the script running with verbose on

pi@raspberrypi:~/fanshim-python/examples $ python automatic.py --verbose --brightness 100 --on-threshold 60 --off-threshold 50
Current: 37.97 Target: 50.00 Freq  1.80 Automatic: True On: True
Current: 37.00 Target: 50.00 Freq  0.60 Automatic: True On: False
Current: 37.00 Target: 50.00 Freq  0.60 Automatic: True On: False
Current: 37.48 Target: 50.00 Freq  0.60 Automatic: True On: False
^Cpi@raspberrypi:~/fanshim-python/examples $

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