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google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards

Simple Pi Pico controlled sound/brighness macropad
Blueprint is an open-source printed circuit board by Jyst7, from the Jyst7/Sound-Controller repository on GitHub, published under the MIT licence. It is a 2-layer board of 65.3 × 76.7 mm with 70 parts on 63 nets, routed with 463 tracks and 76 vias.
It is built around the SK6812MINI-E. Its parts include 30 capacitors, 30 diodes, 6 resistors, 3 switches and 1 IC. It belongs with the keyboards and input boards and the RP2040 boards of this library.
Simple Pi Pico controlled sound/brighness macropad
I was interested in making a new PCB as I haven't made one in a couple months. I wanted to make something practical that I would use in my daily life, I often found myself annoyed by how many different enues i had to go through to adjust my bolume and brighness so I decided to fix this problem. I also wanted to showcase the pcb because I always enjoy seeing it so I decided tto not make a case for this device.
Pcb:
Schematic
Wiring:
Case:
| Quantity | Component Description | Price | Links |
|---|---|---|---|
| 100x | SK6812 MINI-E | $7 | https://www.aliexpress.com/item/1005005193716172.html |
| 5x | Rotary encoder switch | $4 | https://www.aliexpress.com/item/1005003510208490.html |
| 100x | SMD 10k Resistor | $3.5 | https://www.aliexpress.com/item/1005006198053993.html |
| 1x | Pi Pico | $3.5 | https://www.aliexpress.com/item/1005006403553612.html |
| 100x | 100nF SMD 0805 capacitors | $2 | https://www.aliexpress.com/item/1626652703.html |
| 1x | PCB | $10 |
Total price: $30
| Qty | Value | Footprint | References |
|---|---|---|---|
| 30 | C | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +14 |
| 30 | SK6812MINI | Cheyao Macropad PCB Neopixel:SK6812MINI-E | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +14 |
| 6 | R10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R5, R6 |
| 3 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW1, SW2, SW4 |
| 1 | Pico | RPi_Pico:RPi_Pico_SMD_TH | U1 |
It measures 65.3 × 76.7 mm and has 2 copper layers, 1.6 mm thick.
70 parts, built around the SK6812MINI-E. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the Jyst7/Sound-Controller repository on GitHub, at the commit this page was made from: the board is PCB/Blueprint.kicad_pcb and its schematic PCB/Blueprint.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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