I don't think it has anything to do with releasing the pin. My test process is a such:
1. Turn off the pi.
2. Physically connect a flow meter
3. Test
4. Turn off pi
5. Physically connect other flow meter
6. Test
1. Turn off the pi.
2. Physically connect a flow meter
3. Test
4. Turn off pi
5. Physically connect other flow meter
6. Test
Statistics: Posted by Ziggy1982 — Sun Jun 16, 2024 9:30 am