- Switching the relay directly from GPIO needs flywheel diodes attached.
- according to the description, the GND of pico and GND of external 12 V are connected. Avoid this.
- perhaps some current leak from the 12V supply into the sensor probe. Check isolation.
- check the SPI signals using your logic analyzer.
- according to the description, the GND of pico and GND of external 12 V are connected. Avoid this.
- perhaps some current leak from the 12V supply into the sensor probe. Check isolation.
- check the SPI signals using your logic analyzer.
Statistics: Posted by ghp — Thu Dec 14, 2023 5:21 am
