DIY Micro:bit Breadboard Hat

Before assembling my Micro:bit-based breadboard hat, I first modeled the original dimensions of a BBC Micro:bit in EagleCAD. After creating the general outline, I added an empty patch to accommodate for the battery plug, Micro USB B port, and the reset switch, along with an array of holes with standard breadboard spacing. Finally, I added a CR1225 battery holder to offer a more portable power source for any project. After receiving my boards from JLCPCB, I soldered on the battery holder along with a LED circuit for a DIY temperature sensor.

To attach the hat to the Micro:bit I used 5 M3 screws, 5 M3 nylon locking nuts, and 5 1/4" tall nylon spacers.

Lastly, I designed a simple case in Fusion360 to isolate the breadboard circuit while still allowing the LED matrix, A/B switches, and assembly screws to remain accessible.