Headfour
About the Headfour PCB
Headfour is an open source PCB design by nezumee, published on GitHub under the MIT license. It is a 2-layer board measuring 30.5 × 76.2 mm, with 10 components from 10 distinct parts.
Other key parts include the ProMicro and ssd1306. By type, the board carries 2 ICs, 2 connectors, 2 switches, 1 diode and 1 resistor.
It belongs with the keyboards designs in this gallery.
From the project
The 4x4 keyboard is a modular keyboard with per-key RGB lighting intended to be used as a base for prototyping MIDI controller with QMK firmware.
The 4x4 keyboard is a modular keyboard with per-key RGB lighting intended to be used as a base for prototyping MIDI controller with QMK firmware.
It consists of the following parts: Head PCB with MCU and other connectors 1 to 4 key PCB, each having 16 hotswap Cherry MX switches in 4x4 layout
These parts can be soldered together in different configurations, resulting in different layouts, such as 4x12 Planck layout or 8x8 layout similar to MIDI drumpads controllers.
Main components on the Headfour
Headfour bill of materials (BOM)
10 components, 10 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ProMicro | ProMicro_v3.5 | U1 |
| 1 | ssd1306 | SSD1306 | U2 |
| 1 | Conn_02x07_Odd_Even | IDC-Header_2x09_P2.54mm_Vertical | J1 |
| 1 | MJ-4PP-9 | MJ-4PP-9_1side | J2 |
| 1 | Conn_01x19 | PinHeader_1x19_P2.54mm_CastellatedR | JL1 |
| 1 | Conn_01x19 | PinHeader_1x19_P2.54mm_CastellatedL | JR1 |
| 1 | SW_Push | ResetSW_1side | SW1 |
| 1 | Rotary_Encoder_Switch | RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW2 |
| 1 | LED | LED_D3.0mm | D1 |
| 1 | 1k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3 |
Headfour design files
The KiCad project lives in the nezumee/4x4 repository on GitHub; these links point at the commit this page was built from.
Headfour: common questions
How big is the Headfour PCB?
The Headfour measures 30.5 × 76.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Headfour?
10 components, from 10 distinct parts. The full bill of materials is listed on this page.
Where can I download the Headfour design files?
From the nezumee/4x4 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Headfour design in my own project?
Yes, under the terms of its MIT license, which nezumee chose for the repository.
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