Pause print on GPIO filament runout sensor
The following need to be added to the config.yaml:
octoprint_filament:
pin: XX
bounce: 400
where XX represent the GPIO pin where your sensor is connected.
An API is available to check the filament sensor status via a GET method to /plugin/filament/status which returns a JSON
{status: "-1"} if the sensor is not setup{status: "0"} if the sensor is OFF (filament not present){status: "1"} if the sensor is ON (filament present)The status 0/1 depends on the type of sensor, and it might be reverse if using a normaly closed switch.
A build using an optical switch can be found at http://www.thingiverse.com/thing:1646220
Note: Needs RPi.GPIO version greater than 0.6.0 to allow access to GPIO for non root and chmod a+rw /dev/gpiomem.
This requires a failry up to date system.