I recently made a Thingverse account, 3D models avalable here.

Hey! I made this cool(ish) bike computer that shows you: speed, time, gps, temp/humidity/pressure. And whatever else i can think of. I used a nrf52840 for it. I plan to add some more functions to it like logging routes and such, the firmware is WIP, as you can most likely tell from the UI The gps connects via firmware. and seems to work except it cant catch a satalite, it prolly works, but my area is clearly against 1.2Ghz (i think its 1.2…) As for the firmware, its my github but WIP and not done

As for programming the nrf, i had a issue where i couldnt assign IO properly and such, so i made a.. library? more like a board addon, Here

Parts

• nrf52840: AliExpress Link
• E-ink display (2.13-Black-White): AliExpress Link
• Temp - BME280: AliExpress Link
• RTC - DS3231: AliExpress Link
• GPS - ATGM336H: AliExpress Link
• Photoresistor: AliExpress Link
• 6 * 6 * 5mm Mute Switch: AliExpress Link
• Power switch - SK12D07: AliExpress Link
• Battery
• Other little bits

Images

Theres not really much to say, Hope i gave you some ideas, and if you need anything, my telegram is on the side.