Porting QMK To A Cheap Mechanical Keyboard

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Over the last couple of years, we’ve seen an incredible number of DIY keyboard builds come our way. Some have had their switches nestled into laser-cut aluminum and others 3D printed plastic. They may be soldered together on a custom PCB, or meticulously hand-wired. But however they were built, they almost all shared one thing in common: they ran some variant of the open source QMK keyboard firmware.

But what if you just want to run an open firmware on the keyboard you picked up for $50 bucks on Amazon? That’s exactly where [Stephen Peery] found himself nine months ago with this DK63 gaming keyboard. Since so many of these small RGB LED mechanical keyboards are very similar to existing open source designs, he wondered what it would take to blow out the original firmware and replace it with a build of QMK.

While [Stephen] doesn’t have everything working 100% yet, he’s nearly reached the end of his epic reverse engineering journey. The first step was tearing apart the keyboard and identifying all the components it used, then pulling the original firmware out of the updater. From there, between Ghidra and Serial Wire Debug, he was able to figure out most of what the stock firmware was doing so he could replicate it in QMK.

According to his README, the RGB LEDs and Bluetooth functionality don’t currently work, but other than that it seems QMK is up and running. If you’re OK with those concessions, he has information on the page about flashing his build of QMK to the stock DK63 with the ST-Link V2 so you can give it a shot. Though you do so at your own risk; we wouldn’t recommend doing this on your only keyboard.

We’ve seen commercially manufactured keyboards running QMK before, but it usually involves completely replacing the original controller with new electronics. That [Stephen] got this all working on stock hardware so other owners can follow in his footsteps is really a considerable accomplishment.

[Thanks to Baldpower for the tip.]

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