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This is my submission to #hackpad. It is designed with 9 keys, 16 LEDs, a EC11 rotary encoder, and a 128x32 OLED screen.

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th31dk/hackpad

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Dec 2, 2025
8580a11 · · Dec 2, 2025

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the_idk's Hackpad

This is my submission for hackpad.

BOM

BOM File
9 Cherry MX Switchess
9 1N4148 Diodess
9 Blank DSA Keycapss
16 SK6812 MINI-E LEDss
1 EC11 Rotary Encoderr
1 XIAO RP20400
1 0.91in OLED Display 4 M3x16 Boltlt
4 M3 Heatsett

CAD

Bottom Top
Image Image

Assembly:
Image
It's help together by 4 heat inserts and 4 M3x16 bolts..

PCB

Schematic PCB
Image Image

PCB 3D Model:
Image
This was my first time using KiCad, so it isn't the best. Although it took the longest out of everything in this project, I had a lot of fun designing the PCB..

Final Thoughts

Overall, I learned a lot from this project. In the future, I'm going to try to make a better revision.

About

This is my submission to #hackpad. It is designed with 9 keys, 16 LEDs, a EC11 rotary encoder, and a 128x32 OLED screen.

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