Emulate PanelDue port for macros through physical buttons?
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I want to be able to send gcode commands like home, stop, pause...etc to my duet wifi through physical buttons. what micro controller or board could I do this with?
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Literally anything. You'll need 3v3 logic or level shifting to be on the safe side.
I chose to use an ESP8266 because it cheap, runs on 3.3v and will allow to interface against the PanelDue serial port as well as telnet or http. I was primarily after listing for the beep message from the PanelDue port, but you can find some more details here, and also link to similar stuff: https://forum.duet3d.com/post/99591
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Might be worth noting that if you have free end stops inputs, you can use the Duet directly with triggers and the trigger macros.
https://duet3d.dozuki.com/Wiki/Gcode#Section_M581_Configure_external_trigger(I think RRF3 will support more pins and or triggers if you don't have enough free atm)
