2 layers273.8 × 109 mm
TrueStrike42
byungyoonc/TrueStrike42
TrueStrike42 is a columnar staggered unibody split keyboard designed to maximize performance and minimize finger fatigue.
167 parts24
2 layers85.7 × 83.7 mm
CommandPad
ILikeFood971/CommandPad1Mechanical macropad utilizing the Seeed XIAO RP2040
- Size
- 85.7 × 83.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 50
- Nets
- 53
- Pads
- 216
- Tracks, vias
- 261, 84
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 31 Jul 2025
- Updated
- 2 Aug 2025
Overview
CommandPad is an open-source printed circuit board by ILikeFood971, from the ILikeFood971/CommandPad repository on GitHub, published under the MIT licence. It is a 2-layer board of 85.7 × 83.7 mm with 50 parts on 53 nets, routed with 261 tracks and 84 vias.
It is built around the 74AHCT125D and SK6812MINI-E. Its parts include 18 diodes, 11 switches, 10 capacitors, 3 ICs and 2 resistors. It belongs with the keyboards and input boards and the RP2040 boards of this library.
Main components
2
74AHCT125D
SOP-14-40℃~+125℃ 1 4 4.3ns@5V,50pF 4.5V~5.5V 40uA 74AHCT 8mA 8mA Schmitt trigger Tri-State Unidirectional SOP-14 Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffer/Driver/Transceiver
SK6812MINI-E
SMD-40℃~+85℃ 0.6mA 1.78mm 120mcd~240mcd 120° 160mcd~320mcd 1kHz 2.8mm 2000V 3.2mm 3.7V~5.5V 460nm~470nm 515nm~525nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Semi-transparent lens SMD RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
README
README.mdCommandPad
Mechanical macropad utilizing the Seeed XIAO RP2040. Has 9 keys plus two rotary encoders, an OLED display, and sk6812 mini-e leds under each key. CommandPad uses kmk firmware and an optional companion app that allows the OLED display to include information about volume and song titles.
CAD
There are three 3D printed pieces that fits together using M3 bolts and heatset inserts. The bottom piece holds the pcb, the middle holds the switches, and the top makes it look nice. There is a hole on the back side for a usb plug to utilize CommandPad. The snowboarder sillouette is featured since snowboarding is cool. The case was fully designed in Fusion360. The PCB model was exported from KiCad as a reference.
PCB
The PCB was designed in KiCad.
Firmware
CommandPad uses KMK to power everything.
- The 3x3 matrix acts as customizable hotkeys currently set to f13 to f21
- The 2 rotary encoders act as a volume control and horizontal scroll wheel
- Pressing them is by default set to f22 and f23 but it can be change to play/pause, mute, etc.
- The OLED screen stays dark until you change volume or play music with the companion app runnning. Then it will show your volume level or the title of the current song (scrolls if it is too long)
BOM
| Item | Quantity | Type/Details |
|---|---|---|
| Cherry MX Switches | 9 | Mechanical switches |
| Blank DSA Keycaps | 9 | Keycaps |
| M3x5x4 Heatset inserts | 5 | Hardware |
| M3x16mm SHCS Bolts | 5 | Hardware |
| 1N4148 DO-35 Diodes | 9 | Through hole |
| Through hole resistors | 2 | 4.7k |
| Through hole capacitors | 9 | 100nF (0.1uF) |
| SK6812 MINI-E LEDs | 9 | RGB LEDs |
| 0.91" 128x32 OLED Display | 1 | Display |
| EC11 Rotary Encoder | 2 | Rotary encoder |
| Seeed XIAO RP2040 | 1 | Through hole |
| MCP23017 | 1 | Through hole |
| 74AHCT125 | 1 | Through hole |
| PCB | 1 | Printed circuit board |
| Case (3 printed parts) | 1 | 3D printed enclosure |
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C1, C3, C4, C5, C6, C7, C8, C9, C10, C11 |
| 9 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D9 |
| 9 | SK6812MINI | ScottoKeebs_Components:LED_SK6812MINI | D10, D11, D12, D13, D14, D15, D16, D17, D18 |
| 9 | SW_Push | ScottoKeebs_MX:MX_PCB_1.00u | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9 |
| 2 | 4.7k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2 |
| 2 | RotaryEncoder_Switch | ScottoKeebs_Scotto:Encoder_EC11_MX | SW10, SW11 |
| 1 | 74AHCT125 | Package_DIP:DIP-14_W7.62mm | U3 |
| 1 | MCP23017_SP | Package_DIP:DIP-28_W7.62mm | U2 |
| 1 | OLED | Kicad Footprint Folder:SSD1306-0.91-OLED-4pin-128x32 | J1 |
| 1 | XIAO-RP2040-DIP | OPL:XIAO-RP2040-DIP | U1 |
The 45 most common of 50 parts.
Questions
How big is the CommandPad PCB?
It measures 85.7 × 83.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the CommandPad use?
50 parts, built around the 74AHCT125D and 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 CommandPad KiCad files?
From the ILikeFood971/CommandPad repository on GitHub, at the commit this page was made from: the board is PCB/CommandPad.kicad_pcb and its schematic PCB/CommandPad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CommandPad design in my own project?
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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