Note: This feature uses a preinstalled plugin in the device code and associated commandline flags/classes in the python code. You'll need to be running at least version 1.2.23 (or later) of the python and device code to use this feature.
GPIO access is fundamentally 'dangerous' because invalid options can physically burn-up hardware. To prevent access from untrusted users you must first make a "gpio" channel that is used for authenticated access to this feature. You'll need to install this channel on both the local and remote node.
The procedure using the python command line tool is:
1. Connect local device via USB
2. "meshtastic --ch-add admin; meshtastic --info" thn copy the (long) "Complete URL" that info printed
3. Connect remote device via USB (or use the remote admin feature to reach it through the mesh, but that's beyond the scope of this tutorial)
4. "meshtastic --seturl theurlyoucopiedinstep2"
Now both devices can talk over the "gpio" channel.
## Doing GPIO operations
Here's some examples using the command line tool.
## Using GPIOs from python
You can programmatically do operations from your own python code by using the meshtastic "RemoteHardwareClient" class - see the python documentation for more details.
