4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers98.2 × 90 mm
Rotom board
Aquamangos/Rotom-HackpadA hackpad resembling a rotom phone
- Size
- 98.2 × 90 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 45
- Nets
- 32
- Pads
- 124
- Tracks, vias
- 296, 0
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 22 Jul 2026
- Updated
- 1 Nov 2026
Overview
Rotom board is an open-source printed circuit board by Aquamangos, from the Aquamangos/Rotom-Hackpad repository on GitHub. It is a 2-layer board of 98.2 × 90 mm with 45 parts on 32 nets, routed with 296 tracks and 0 vias.
It is built around the SK6812MINI-E. Its parts include 18 diodes, 10 switches and 2 ICs.
Main components
1README
README.mdWhy?
Quick side project for Hackclub -> Stardance -> Hackpad Program
Also rotom seemed cool yk
Keyboard Rotom
A 3x3 matrix mini keyboard reassembling a Phone Rotom from the popular series「Pokémon」
Main personal usage would be for volume control and macro keys (mic mute, etc)
Main features
- 9 programable buttons for macros/keys
- 1 Rotary encoder knob for volume control
- 1 OLED display for art/animations (In my case its his mouth)
- 9 LEDs for cool effects (RBG yay)
Finished Product
CAD models
Full models / simple case designs with Fusion 360. The Pokéball is the knob attachment in this design
PCB Model
The amount of silkscreen MIGHT be a little overkill...
PCB Schematics
First time using KiCad!
Bill of Materials
- 1x PCB from JCLPCB
- 3x 3D printed parts [Top|Bottom|Knob Attachment]
- 9x through-hole 1N4148 Diodes
- 9x MX-Style switches
- 1x EC11 Rotary encoders
- 1x 0.91 inch OLED display
- 9x white blank DSA keycaps
- 9x SK6812 MINI-E LEDs
- 4x M3x16mm screws
- 4x M3x5mx4mm heatset inserts
Parts
45| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 1N914 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D9 |
| 9 | SK6812MINI-E | HACKPAD_KICAD:SK6812MINI-E_fixed | D10, D11, D12, D13, D14, D15, D16, D17, D18 |
| 9 | SW_Push_45deg | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9 |
| 1 | ER_OLEDM0.91_1x-I2C | Display:ER_OLEDM0.91_1x-I2C | U2 |
| 1 | MOUDLE-SEEEDUINO-XIAO | HACKPAD_KICAD:XIAO-Generic-Hybrid-14P-2.54-21X17.8MM | U1 |
| 1 | RotaryEncoder | Ec11_RotaryEncoder_Hackpad:RotaryEncoder_Alps_EC11E_Vertical_H20mm | SW11 |
The 30 most common of 45 parts.
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Questions
How big is the Rotom board PCB?
It measures 98.2 × 90 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Rotom board use?
45 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.
Where can I download the Rotom board KiCad files?
From the Aquamangos/Rotom-Hackpad repository on GitHub, at the commit this page was made from: the board is pcb/rotom-board.kicad_pcb and its schematic pcb/rotom-board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Rotom board design in my own project?
Its repository states no licence, so its author keeps all rights: ask Aquamangos before reusing the design.