1. How to Enable:
To enable the GPIO buttons interface, locate the parameter "enabled" in the "gpio" section and change its value from `false` to `true`.
The settings editor is in the 3dprinteros-client interface: Main Screen > Settings > Edit settings file.
2. Default Wiring:
Pin numbering is based on the RPi (should be distinct from BCM pin numbering).
- Cancel button: pins 5 and 6 (ground)
- Send bed clear button: pins 9 (ground) and 10
3. Wiring Recommendations:
In case of spontaneous button activation, consider the following solutions:
- Use shorter wires.
- Avoid placing the RPi with GPIO interface enabled near sources of electromagnetic noise (e.g., fridges, washing machines, power generators).
- Add a 100nF capacitor as close to the RPi's pins as possible.
4. Schemas: