![I can't toggle GPIO pin (IN/OUT) mode by terminal if GPIO Pin is selected as switching or sensing method · Issue #88 · kantlivelong/OctoPrint-PSUControl · GitHub I can't toggle GPIO pin (IN/OUT) mode by terminal if GPIO Pin is selected as switching or sensing method · Issue #88 · kantlivelong/OctoPrint-PSUControl · GitHub](https://user-images.githubusercontent.com/4478154/34619457-7d4e8fcc-f242-11e7-9876-bef1680573f0.png)
I can't toggle GPIO pin (IN/OUT) mode by terminal if GPIO Pin is selected as switching or sensing method · Issue #88 · kantlivelong/OctoPrint-PSUControl · GitHub
![microcontroller - safe negative voltage divider to GPIO pins - Electrical Engineering Stack Exchange microcontroller - safe negative voltage divider to GPIO pins - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/LcR8a.png)
microcontroller - safe negative voltage divider to GPIO pins - Electrical Engineering Stack Exchange
![Detecting and controlling mains voltages with a Raspberry Pi or Arduino | Experiments using a Raspberry Pi and solid state relays (SSRs) to sense the presence of mains electricity and switch loads Detecting and controlling mains voltages with a Raspberry Pi or Arduino | Experiments using a Raspberry Pi and solid state relays (SSRs) to sense the presence of mains electricity and switch loads](https://pdcastro.github.io/mains-io/assets/img/mains-io-drawing.png)