Unified Daughterboard
About the Unified Daughterboard PCB
Unified Daughterboard is an open source PCB design by hnr-y, published on GitHub under the MIT license. It is a 4-layer board measuring 18 × 16.5 mm, with 7 components from 7 distinct parts.
Other key parts include the TPD4E05U06DQAR. By type, the board carries 2 connectors, 2 resistors, 1 IC, 1 fuse and 1 diode.
It belongs with the keyboards designs in this gallery.
From the project
A simple 65 WKL keyboard.
For more details on the Unified Daughterboard project, see the main website.
The C5 daughterboard is the current most recent revision to the classic square form-factor daughterboard, with its roots in the C1 which was designed to be compatible with Wilba's keyboards. The daughterboard features the following:
- ESD protection, overcurrent protection, overvoltage protection, shielding noise decoupling, and single-path grounding to chassis functionality - Two variants: The new Molex Pico-EZmate and the classic JST-SH - 1:1 connector pinout to retain compatibility with existing PCBs - Same form…
Main components on the Unified Daughterboard
Unified Daughterboard bill of materials (BOM)
7 components, 7 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPD4E05U06DQAR Texas Instruments | USON-10_2.5x1.0mm_P0.5mm | U1 |
| 1 | TYPE-C-31-M-12 TYPE-C-31-M12_13 Korean Hroparts | TYPE-C-31-M-12 | J1 |
| 1 | X1224WRS-04-LPV01 XKB Connectivity | PicoEZMate-Reinforced-Alt | J2 |
| 1 | ASMD1206-150 Shenzhen JDT Fuse | Fuse_1206_3216Metric | F1 |
| 1 | SMF6.0A FTR | D_SOD-123 | D1 |
| 1 | 0402WGF5101TCE 5.1k Uniroyal | R_0402_1005Metric | R1 |
| 1 | C25905 5.1k Uniroyal | R_0402_1005Metric | R2 |
Unified Daughterboard design files
The KiCad project lives in the hnr-y/spiral65 repository on GitHub; these links point at the commit this page was built from.
Unified Daughterboard: common questions
How big is the Unified Daughterboard PCB?
The Unified Daughterboard measures 18 × 16.5 mm, has 4 copper layers and is 1.6062 mm thick.
How many components are on the Unified Daughterboard?
7 components, from 7 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Unified Daughterboard design files?
From the hnr-y/spiral65 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Unified Daughterboard design in my own project?
Yes, under the terms of its MIT license, which hnr-y chose for the repository.
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