Unified Daughterboards

From $8.00

Version
Compatibility Info

The C4 daughterboard is 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

C3, C4, 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 is designed to fit into keyboards like the Bakeneko where the C3 was once used.

Unified Daughterboard Lineup

C3 (Discontinued)

This was used for years, but has since been replaced by the more robust C4.

  • Included Cable- 165mm JST to JST
  • Square shape
  • 4x M2 Screws
  • USB-C
  • JST 4-Pin Header
  • Basic ESD Support

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

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.

Customer Reviews

Based on 13 reviews
85%
(11)
8%
(1)
0%
(0)
8%
(1)
0%
(0)
A
Andrew De La Paz

Unified Daughterboard and JST Cable

S
Serafim Costa
Great procuct

It is better than the original board that came with my keyboard. I bought one extra to be future proof. Very happy with the product. It works with a lot of different keyboards.

C
Colton Falusi

Unified Daughterboard and JST Cable

D
Dan Pelletier
Solved issue!

Cannonkeys shipped this out super fast and was able to get me up and running! Was sold a keyboard with a bad DB and this solved the issue.

a
andrew O

Unified Daughterboard and JST Cable