2 layers44.5 × 46.9 mm
OSO SWAT B1-jig
joeycastillo/Sensor-Watch
A board replacement for the classic Casio F-91W wristwatch
31 parts2.1k
2 layers102.4 × 52.4 mm
TachyonMacro
BillRates/TachyKeebsJust sharing my keyboard projects.
- Size
- 102.4 × 52.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 31
- Nets
- 39
- Pads
- 129
- Tracks, vias
- 92, 11
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 26 Sep 2026
- Updated
- 30 Sep 2026
Overview
TachyonMacro is an open-source printed circuit board by BillRates, from the BillRates/TachyKeebs repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 102.4 × 52.4 mm with 31 parts on 39 nets, routed with 92 tracks and 11 vias.
Its parts include 15 diodes, 15 switches and 1 IC. It belongs with the AVR (ATmega, ATtiny) boards of this library.
README
TachyonMacro/readme.mdWarning
The firmware for the pro micro uses the pro micro ATmega32U4
If you are using a pro micro with a rp2040, please write your own firmware
:)
Also if you plan to fabricate this board please use JLCPCB.
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | ~ | ScottoKeebs_MX:MX_PCB_1.00u | S1, S2, S3, S4, S5, S7, S8, S9, S10, S11, S12, S13, S14, S15, S16 |
| 15 | ~ | ScottoKeebs_Components:Diode_DO-35 | D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 1 | Arduino_Pro_Micro | ScottoKeebs_MCU:Arduino_Pro_Micro | U1 |
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Questions
How big is the TachyonMacro PCB?
It measures 102.4 × 52.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the TachyonMacro use?
31 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 TachyonMacro KiCad files?
From the BillRates/TachyKeebs repository on GitHub, at the commit this page was made from: the board is TachyonMacro/TachyonMacro.kicad_pcb and its schematic TachyonMacro/TachyonMacro.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the TachyonMacro design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).