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75% keyboard with a clear acrylic case

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JuvenescentBug/Clear-as-day

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1860c98 · · Aug 2, 2025

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Clear as Day

Clear as day is a custom, open source 75% keyboard with a rotary encoder and underlighting.

I made this project since I needed to work with PCBs and Kicad more, as well as to get used to routing well. All other aspects of this project, like coding and CAD, were things I was familiar with, so it was fun to challenge myself with something I wasn't used to doing.

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PCB

The schematic consists of a basic keyboard matrix, which includes a rotary encoder, and also sk6812minis all wired toa raspberry pico. Image

The raspberry pico is placed on the right side edge to make it easy to plug in and for it to blend nicely in a case

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Firmware

I used KMK firmware to program the keyboard as well as the LEDs.

CAD

The case consists of 2 parts, and the pcb rests on a frame built on the bottom. I avoided the use of screws in the design because I wanted to make it clear, and I though including screws might take away how clean the design might look. Currently, I plan to use hotglue/a 3d pen to keep the case together.

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BOM

# Item Amount Link Cost
1 Raspberry pico 1 aliexpress 1 usd
2 1n4148 diodes 83 Amazon 3.68 USD
3 Cherry MX switches 83 Amazon 35 USD
4 ec11 rotary encoder 1 AliExpress 1 USD
5 Stabilizers 4 of 2u, 1 6.25u AliExpress 4.16 USD
6 SK6812 mini LEDS 38 Amazon 8.50 USD
7 Keycaps 83 Amazon 25.99 USD
8 Case bottom and top Self made
9 PCB 1 JBL PCB 23 USD
10 Rotary encoder knob 1 3D printed
Total price: (including tax+shipping) 120.67 USD Total price (No tax): 102.33

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75% keyboard with a clear acrylic case

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