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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 01/23/2019 at 21:434 Comments

I was fairly close to getting everything running, and as I mentioned, this last stage is painful in that things *almost* work. I discovered a few new problems:

1. There's a random SDIO error that causes printing to error out. I hooked up Octoprint and proceeded anyway.

2. My travel settings are way, way too agressive for the little MPSM I wired this into. The printer doesn't move fast normally, and you can see it shakes and rattles quite badly during the video.

3. Steppers STILL aren't adjusted right. X skipped a step at the bottom, causing a shift (and at the top, the person operating the printer failed to get their hand out of the way of the print head, causing another). 

4. A partial clog midway through the print caused that ugly layer in the middle, a minor shift caused the bulge below it.

Despite all these problems, the printer works. The pins are correct, almost everything works except one of the LCD buttons, which isn't defined right for some reason. I'll begin a PR to get the pins added to Marlin once I have that fixed.

Discussions

Domenico Lamberti wrote 01/31/2019 at 02:17 point

oh hell yeah, getting closer and closer to buying one of these for my Delta.

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cmshelton2010 wrote 01/28/2019 at 21:21 point

Awesome Work J.C.  I think the lerdge is a great board, and one seller point was the ability to change all your setting from the LCD. but as many other boards it has software issues and Lerdge seem so slow and (like they don't care) about these issues. Your fixing the lerdge open source will make the lerdge X and K go popular  (like the ramps arduino mega) Thanks for you work and time.

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ferrovision wrote 01/28/2019 at 01:47 point

It's.... ALIVE!!!!

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Leonel wrote 01/26/2019 at 23:17 point

nice work

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