Hooking an ST-Link to The Lerdge X and K - An Illustration

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. Nelson • 12/19/2018 at 22:38•5 Comments

I've been asked how you hook an STLink to the lerdge X and K. I have zero idea about the S because I don't own one, but here's a illustration (I checked twice and I think I go the CLK/IO lines right - I usually hook them up, and if I can't probe the chip, reverse them. To describe it verbally, it's the pair of pins one from the right on the bottom row. I hook power to the VCC jumper, GND to the middle pin on any of the servo headers.

Previous log

Lerdge-K bootloader dumped

12/19/2018 at 19:50 • 0 comments

Next log

Bricking a Lerdge-X and other fun things to do

12/21/2018 at 18:08 • 0 comments

Discussions

Nuno Silva wrote 11/27/2019 at 15:45

the file to upload is "lerdgexboot1.0.2.patched.bin" ? and then can use marlin? sorry for my ignorance but how do i send the file?

Are you sure? yes | no

plam wrote 12/20/2018 at 14:18

Lerdge-X STLink connect - The STL pin numbers are reference to STLink on Discovery Board.

https://imgur.com/U6EaL0u

I use 33 Ohm resistors for the tiny socket pins.

Are you sure? yes | no

cmshelton2010 wrote 12/20/2018 at 08:14

Thanks ! J.C. I used wire from a wire tie so the pin was small enough to not damage or spread the pin hole and prevent the WiFi module from working plugged back in. the pins that came with my cable where to large.

Are you sure? yes | no

J.C. Nelson wrote 12/20/2018 at 09:03

Were you able to connect?

Are you sure? yes | no

cmshelton2010 wrote 12/21/2018 at 07:50

I haven't tried booting and connecting to the lerdge x, I'm still reading how to do all that.

Are you sure? yes | no

Hooking an ST-Link to The Lerdge X and K - An Illustration

Lerdge-K bootloader dumped

Bricking a Lerdge-X and other fun things to do

Discussions

Become a Hackaday.io Member