qmk_firmware/keyboards/ploopyco/madromys/readme.md

Ploopyco Madromys Trackball

It's a DIY, QMK-powered trackball!

• Keyboard Maintainer: PloopyCo
• Hardware Supported: RP2040
• Hardware Availability: Store, GitHub

Make example for this keyboard (after setting up your build environment):

qmk compile -kb ploopyco/madromys -km default

Building Firmware

See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.

Triggering the Bootloader

Do you see those two golden holes in the board? Those are called vias. They act exactly like a switch does. Right now, that switch is OFF. However, if you take a paperclip or a pair of metal tweezers and touch those two vias, the two vias will form an electrical connection. Effectively, that switch turns ON.

Go ahead and connect the two vias, and then (while the vias are connected) plug in the Madromys board into your computer.

The computer should recognise that a mass storage device was just plugged in. Once this is done, you should be able to drag and drop files onto the Madromys board, as if the board was a USB drive. Feel free to remove the tweezers or paperclip at this point.

If you want to upload a new firmware file (a ".uf2" file, like "madromys_awesome_version.uf2" or something), just drag it into the folder, and it'll automatically install on the Madromys board and restart itself, in normal operating mode. You're done!

TIP: If your firmware is in some kind of strange state and uploading new firmware isn't fixing it, try uploading a flash nuke to the Madromys board before flashing the new firmware. It wipes the memory of the Madromys board completely clean, which can help clear a few types of errors.

Customizing your Ploopy Madromys

You can find customziation options here.