2 layers208.7 × 393.8 mm
Ferris
pierrechevalier83/ferris
A low profile split keyboard designed to satisfy one single use case elegantly
102 parts1.3k
2 layers206.1 × 70.2 mm
Planck but low profile :)
- Size
- 206.1 × 70.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 102
- Nets
- 70
- Pads
- 414
- Tracks, vias
- 493, 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 6 Jul 2025
- Updated
- 7 Aug 2025
Overview
Log is an open-source printed circuit board by wenbang24, from the wenbang24/log repository on GitHub. It is a 2-layer board of 206.1 × 70.2 mm with 102 parts on 70 nets, routed with 493 tracks and 2 vias.
Its parts include 49 switches, 48 diodes and 1 IC. It belongs with the nRF52 and nRF5x boards of this library.
README
README.mdLog
A low-profile, wireless, portable rendition of the OLKB Planck keyboard.
Firmware
Log uses ZMK for its firmware. The firmware is available in the zmk-keyboard-log sub-repo.
BOM
| Part | Quantity | Price | Link |
|---|---|---|---|
| Supermini nRF52840 | 1 | $4.45 | AliExpress |
| Kailh Choc V1 | 48 | $21.77 | AliExpress |
| 1N4148 Diode | 48 | included in PCB cost | AliExpress |
| CFX Keycap Set | 1 | $27.76 | AliExpress |
| M2x3 Heat-Set Inserts | 4 | $1.60 | AliExpress |
| M2 Flat Head Screws 5mm | 4 | $1.25 | AliExpress |
| 3.7V 5000mAh Battery | 1 | $9.64 | AliExpress |
Total: $67.83
(prices converted from AUD to USD, as of 2025-07-16)
PCB & PCBA cost: $29.34
TOTAL: $97.17
Parts
102| Qty | Value | Footprint | References |
|---|---|---|---|
| 48 | 1N4148 | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +32 |
| 48 | SW_SPST | keyswitches:SW_PG1350 | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +32 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 1 | SW_SPST | TS-1088-AR02016:SW_TS-1088-AR02016 | SW49 |
| 1 | SuperMini nRF52840 | PCM_marbastlib-xp-promicroish:SuperMini_nRF52840_H_USBdn | U1 |
Questions
How big is the Log PCB?
It measures 206.1 × 70.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Log use?
102 parts. 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 Log KiCad files?
From the wenbang24/log repository on GitHub, at the commit this page was made from: the board is pcb/pcb.kicad_pcb and its schematic pcb/pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Log design in my own project?
Its repository states no licence, so its author keeps all rights: ask wenbang24 before reusing the design.
Similar boards
- 2 layers100 × 94.2 mm
- 2 layers107.5 × 2.5 mm
ESP32Clock
hackclub/OnBoard
💡 Join 1,000 teenagers and make your first PCB with a $100 grant!
102 parts915 - 2 layers110.3 × 171.8 mm
- 2 layers172 × 152.9 mm
- 2 layers118.1 × 101.6 mm
Teensy eurorack
newdigate/teensy-eurorack
Hardware Design: Eurorack shield for teensy 4.1 with 14 in / 16 out analog channels
102 parts259MIT - 2 layers157.5 × 115.8 mm
- 2 layers75.2 × 61.1 mm
