STLink Clone to GnuK back cover

thingiverse

After a talk by Gniibe at FOSDEM 2019, I was inspired to try his GnuK firmware. I ordered two STLink clones for myself and a friend and got started right away. When you remove the pins no longer in use on the back, you're left with an empty space in the casing. This design should fill that gap and allow you to put it on your keychain. It'll clip over the crystal for extra grip, but I still recommend gluing it in place for added protection. I designed this project in FreeCAD and uploaded those files too if you'd like to adjust the tolerances yourself. I printed in 0.3mm layers with PETG, but PLA or ABS will probably work just as well. When you print it, remove the old pin header, try to get most of the solder off the pads. Then put the ring part on the back of the PCB, clip the underside over the crystal, and slide the device back into its casing. Now enjoy!