MacropadV4
oms9·MacropadV4·KiCad - MacropadV4/MacropadV4.kicad_pcb
About the MacropadV4 PCB
MacropadV4 is an open source Raspberry Pi PCB design by oms9, published on GitHub. It is a 2-layer board measuring 180 × 150 mm, with 125 components from 6 distinct parts.
Its main chip is the Pico_W_TestPads, from the Raspberry Pi family. By type, the board carries 80 diodes, 43 switches, 1 IC and 1 connector.
It belongs with the keyboards designs in this gallery.
From the project
MacropadV4 is an ortholinear 40key (5 rows, 8 columns) Macropad with 3 EC11 encoders.
MacropadV4 is an ortholinear 40-key (5 rows, 8 columns) Macropad with 3 EC11 encoders. It's main purpose is volume control and to provide extra keys off of my main keyboard for use as a soundboard or to map to hotkeys, similar to a compact Novation launchpad.
It is based on the Rasbperry Pi Pico/W with individual RGB backlight support. It runs on QMK, mainly compiled for use with Vial.

Main components on the MacropadV4
MacropadV4 bill of materials (BOM)
125 components, 6 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Pico_W_TestPads | raspberry_pi_pico_THT | U1 |
| 1 | AudioJack4 | Jack_3.5mm_PJ320D_Horizontal | J1 |
| 40 | SW_Push | SW_Hotswap_Kailh_MX_1.00u_MINE | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +32 |
| 3 | RotaryEncoder_Switch | RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW41, SW42, SW43 |
| 40 | 1N4148W | D_SOD-123 | D1, D2, D3, D4, D5, D6, D7, D8 +32 |
| 40 | WS2812B | LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D41, D42, D43, D44, D45, D46, D47, D48 +32 |
MacropadV4 design files
The KiCad project lives in the oms9/MacropadV4 repository on GitHub; these links point at the commit this page was built from.
MacropadV4: common questions
What microcontroller does the MacropadV4 use?
The MacropadV4 is built around the Pico_W_TestPads, from the Raspberry Pi family.
How big is the MacropadV4 PCB?
The MacropadV4 measures 180 × 150 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MacropadV4?
125 components, from 6 distinct parts. The full bill of materials is listed on this page.
Where can I download the MacropadV4 design files?
From the oms9/MacropadV4 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the MacropadV4 design in my own project?
The repository has no license, so all rights stay with oms9. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the MacropadV4 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.
Similar boards
Raspberry Pi
Open source rover
nasa-jpl
220 × 178 mm144 parts2LApache-2.09.7kRaspberry Pi
Iot
dotnet
56 × 65 mm24 parts2LMIT2.4kRaspberry Pi
SPIRIT
SPIRIT-org
82 × 155 mm130 parts6LCERN-OHL-S-2.01.3kRaspberry Pi
CM5RevEng
schlae
55 × 40 mm417 parts10LNo license1.0kRaspberry Pi
Haxo hw
cardonabits
102.4 × 211.3 mm38 parts2LCustom license672Raspberry Pi
Phased
Neumi
75 × 100 mm71 parts2LNo license507