Wiring External Machine Light Led Indicator Signal Tower

tmreith

Is it possible to interface a multi-light signal tower to the Duet Wifi board? I'd like to be able to show a green status light when the machine is running a print, yellow light when in standby, and red when the machine is in alarm or fault mode.

Has anyone had any success with a signal tower?

Think you'll have to look into

https://duet3d.dozuki.com/Wiki/Gcode#Section_M42_Switch_I_O_pin
https://reprap.org/wiki/RepRap_Firmware_macros#System_macros

add m42 to config.g to make it green, and add m42 to your start block in the slicer to make it yellow, add another few M42 to stop.g and/or cancel.g to turn back to green. make sure you add M0 to your slicer end block.

there are pause.g and resume.g files as well if you want to change lights. Not sure about faults or alarms.

you probaby can't drive any significant light directly from the IO pins unless the lights have integrated drivers

tmreith

Nice idea. By using RGB LEDs this will work very well.

https://toms3d.org/2017/07/16/software-controlled-leds/