HardLabs

KeebIsSplit

Magnum-Monk·KeebIsSplit·PCB/KeebIsSplit.kicad_pcb

KeebIsSplit PCB layout, top view — open source AVR/Arduino board by Magnum-Monk

About the KeebIsSplit PCB

KeebIsSplit is an open source AVR/Arduino PCB design by Magnum-Monk, published on GitHub. It is a 2-layer board measuring 285 × 115.1 mm, with 90 components from 8 distinct parts.

Its main chip is the Arduino_Pro_Micro, from the AVR/Arduino family. By type, the board carries 20 switches, 18 diodes, 3 transformers and 2 connectors.

It belongs with the keyboards designs in this gallery.

From the project

Keeb Is Split custom keyboard small personal project

- Cantor / Piantor - although it is very comfortable to use layout-wise, the MCU board itself is huge, albeit much easier to flash. Which in turn somewhat leaves it with the only option for the halves connection to also be TRRS. - Altair/Altair-X - Not open source. Difficult to repair, if something "dies". Good luck finding available one to buy these days 😀, not to mention hefty price tag. - Cheapino - RJ45 might be too janky-looking and overall big connector for some users (me included), Otherwise very cool and build-friendly board 🥰.

KeebIsSplit, from the project README
From the project README

KeebIsSplit bill of materials (BOM)

90 components, 8 distinct parts.

QtyPartRefs
2
USB_A
J1, J2
24
Diode
DR1, DR2, DR3, DR4, DR5, DR6, DR7, DR8 +16
2
Arduino_Pro_Micro
MCU_L1, MCU_R1
2
Switch
RESET_SW_L1, RESET_SW_R1
18
Keyswitch
S1, S2, S3, S4, S5, S6, S7, S8 +10
21
Keyswitch
SR1, SR2, SR3, SR4, SR5, SR6, SR7, SR8 +13
3
Keyswitch
T1, T2, T3
18
Diode
D1, D2, D3, D4, D5, D6, D7, D8 +10

KeebIsSplit design files

The KiCad project lives in the Magnum-Monk/KeebIsSplit repository on GitHub; these links point at the commit this page was built from.

KeebIsSplit: common questions

What microcontroller does the KeebIsSplit use?

The KeebIsSplit is built around the Arduino_Pro_Micro, from the AVR/Arduino family.

How big is the KeebIsSplit PCB?

The KeebIsSplit measures 285 × 115.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the KeebIsSplit?

90 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the KeebIsSplit design files?

From the Magnum-Monk/KeebIsSplit repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the KeebIsSplit design in my own project?

The repository has no license, so all rights stay with Magnum-Monk. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the KeebIsSplit without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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