2 layers49.4 × 35.8 mm
WS2812Controller
klein0r/pcb-ws2812-wifi-controller
WiFi Controller for WS2812 LED Stripes
22 parts82MIT
2 layers50 × 50 mm
- Size
- 50 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 5
- Nets
- 27
- Pads
- 62
- Tracks, vias
- 57, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 21 Dec 2025
- Updated
- 22 Sep 2026
Overview
MBTA is an open-source printed circuit board by ytulsiani, from the ytulsiani/TransitDisplay repository on GitHub. It is a 2-layer board of 50 × 50 mm with 5 parts on 27 nets, routed with 57 tracks and 0 vias.
It is built around the SN74AHCT125N. Its parts include 2 ICs, 1 capacitor and 1 connector. It belongs with the ESP32 and RISC-V boards of this library.
Main components
1Parts
5| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 100nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C1 |
| 1 | Conn_01x16 | Connector_PinHeader_2.54mm:PinHeader_1x16_P2.54mm_Horizontal | J1 |
| 1 | GPIO | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | GND1 |
| 1 | SN74AHCT125N | SN74AHCT125N:DIP794W45P254L1930H508Q14 | U2 |
| 1 | XIAO-ESP32-C6 | Seeed Studio XIAO Series Library:XIAO-ESP32C6-DIP | U1 |
Questions
How big is the MBTA PCB?
It measures 50 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MBTA use?
5 parts, built around the SN74AHCT125N. 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 MBTA KiCad files?
From the ytulsiani/TransitDisplay repository on GitHub, at the commit this page was made from: the board is hardware/MBTA.kicad_pcb and its schematic hardware/MBTA.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MBTA design in my own project?
Its repository states no licence, so its author keeps all rights: ask ytulsiani before reusing the design.
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