Knob and Pins Mapping

A project log for Lerdge 3d Printer Mainboard Hacking

Breaking the encryption on the Lerdge series mainboards so I can try porting Marlin 2.0 to it.

J.C. NelsonJ.C. Nelson 04/02/2019 at 04:384 Comments

I've been fairly busy at work (as in the job that pays the bills) but I ordered a knob for my lerdge X and soldered it in. Lerdge X and K pin mappings seem to be right, though since I'm not remotely using all the functions I can't be certain everything works (led strips? No. Probe? No. Motor fan, etc? Hahahahahaahaha) My test printer is literally a Monoprice Mini I wired adapters up for (see my other project for hacking on that).  

I'll start a PR to Marlin main to add X and K boards soon.


David MacKinnon wrote 04/20/2019 at 06:43 point

Hey, is the github repo current with your latest changes? I assume the LerdgeSupport branch is what I want if i want to try building for my board?

  Are you sure? yes | no

J.C. Nelson wrote 04/24/2019 at 04:47 point

My repo is up to date, but the other day I compiled and the result was a black screen (I didn't update any code, but bit-rot is a real problem - any project that isn't maintained rots). You're welcome to download and give it a go. My Arduino core fork has a branch with Lerdge support (I think it's actually called ST-3DP-EVAL, since i built that on top of the lerdge work).

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webz wrote 04/03/2019 at 20:28 point

Hi. Any chance for S  board?

  Are you sure? yes | no

J.C. Nelson wrote 04/24/2019 at 16:20 point

I don't have an S board, so it's not likely (and I wouldn't be comfortable accepting one in most circumstances, since that would create the expectation I do something, and this is a hobby project).

  Are you sure? yes | no