Unified Daughterboards
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Compatibility Info
Connector
- C4 - Molex
- C5 - JST
- S1 - Molex
Backwards Compatibility
The C4 and C5 daughterboard are completely backwards compatible with any keyboard that used the C3, which includes but is not limited to:
- Bakeneko60
- Bakeneko65
- Brutal V2 65%
- brutal V2 1800
Unified Daughterboards
C4, C5, S1
The Unified Daughterboard Project is an open source project designed to standardize the USB daughterboards used in custom keyboards, spearheaded by many community contributors such as ai03. The goal of the project is to provide standards that are easy to build upon to incentivize DIY in the keyboard hobby, while providing an easy pipeline for replacements.
Over the years, new additions to the project have been added. The current lineup consists of the S1 and C4. The C4 and C5 are designed to fit into keyboards like the Bakeneko where the C3 was once used.
Unified Daughterboard Lineup
C4
Backwards compatible with boards that used the C3, including the Bakeneko Series. This revised version uses a Molex Pico-EZmate Connector for increased durability.
- Included Cables - 170mm Molex to JST and 170mm Molex to Molex
- Square shape
- 4x M2 Screws
- USB-C
- Molex Pico-EZmate Connector
- 1:1 connector pinout
- ESD protection, overcurrent protection, overvoltage protection, shielding noise decoupling, and single-path grounding to the keyboard case
- Further specs and implementation details here
C5
The successor to the C3- utilizes a JST connector and works in any keyboard where the C3 was previously used.
- JST Version Included Cable - 170mm JST to JST
- Molex Version Included Cable - 170mm JST to JST and Molex to JST
- Square shape
- 4x M2 Screws
- USB-C
- JST 4-Pin Header on JST version or Molex Pico-EZmate connector on Molex version
- 1:1 connector pinout
- ESD protection, overcurrent protection, overvoltage protection, shielding noise decoupling, and single-path grounding to the keyboard case
- Further specs and implementation details here
S1
The S1 is a slimmer daughterboard, designed to take up less space vertically and fit into some tighter spaces. Unlike the C4, this daughterboard only requires 2 screws to install.
- Included Cable - 170mm Molex to Molex
- Slim formfactor
- 2x M3 Screws
- USB-C
- Molex Pico-EZmate Connector
- 1:1 connector pinout
- ESD protection, overcurrent protection, overvoltage protection, shielding noise decoupling, and single-path grounding to the keyboard case
- Further specs and implementation details here
While cables are included with our daughterboards, you can buy spares below.
Disclaimer
The cables should be handled with care. Any kinks can cause connection issues. Molex cables connect from the top, while JST connectors connect from the side. Please support the JST connectors when inserting cables, and only insert straight on to avoid bending pins.