2 layers49.4 × 35.8 mm
WS2812Controller
klein0r/pcb-ws2812-wifi-controller
WiFi Controller for WS2812 LED Stripes
22 parts82MIT
2 layers26.9 × 73.9 mm
WS2812ControllerEthernet
klein0r/pcb-ws2812-ethernet-controller38Ethernet Controller for WS2812 LED Stripes
- Size
- 26.9 × 73.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 12
- Nets
- 32
- Pads
- 70
- Tracks, vias
- 54, 1
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 12 May 2021
- Updated
- 10 Aug 2026
Overview
WS2812ControllerEthernet is an open-source printed circuit board by klein0r, from the klein0r/pcb-ws2812-ethernet-controller repository on GitHub, published under the MIT licence. It is a 2-layer board of 26.9 × 73.9 mm with 12 parts on 32 nets, routed with 54 tracks and 1 via.
It is built around the SN74AHCT125N. Its parts include 5 connectors, 2 resistors, 2 ICs, 1 capacitor and 1 fuse. It belongs with the lEDs and displays and interfaces and adapters boards and the ESP32 boards of this library.
Main components
1README
README.mdWS2812 / SK6812 Ethernet Controller Custom PCB
Control your addressable LED with custom software like WLED
Important notes
The WT32-ETH01 has been released in different revisions. This adapter has been tested with revision 1.2 (length of the WT32-ETH01 PCB is ~5.5 cm).
Some revisions may not fit! I've received a photo of revision 1.4 with a PCB length of ~6.0 cm. Use PCB version 2.0 (or later) of this project to ensure the adapter will fit.
Preview
Components
- U1: WT32-ETH01 ESP32
- U2: SN74AHCT125DR
- C1: Capacitor Radial 3.8mm 1000μF 6.3V
- F1: Stelvio Kontek STV PTF/75 + Fuse 5x20mm, 5A (max. 6A)
- J1: Barrel Jack Connector - Wuerth 6941xx301002
- J2: PHC 1725669 - MPT 0,5 / 3-2,54
- J3: PHC 1725669 - MPT 0,5 / 3-2,54
- J4: 1x4 2.54mm Male Pin Headers (for flashing - soldering not required)
- J5: 1x2 2.54mm Male Pin Headers (for flashing - soldering not required / jumper)
- R1: Resistor 0805 330
- R2: Resistor 0805 330
Component list (Affiliate-Link)
GPIO
- GPIO2 = Data line 1 of addressable strip
- GPIO4 = Data line 2 of addressable strip
License
The MIT License (MIT)
Copyright (c) 2026 Matthias Kleine info@haus-automatisierung.com
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Parts
12| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | Conn_01x03_Pin | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-3-2.54_1x03_P2.54mm_Horizontal | J2, J3 |
| 2 | R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2 |
| 1 | Barrel_Jack_MountingPin | Connector_BarrelJack:BarrelJack_Wuerth_6941xx301002 | J1 |
| 1 | CP | Capacitor_THT:CP_Radial_D8.0mm_P3.80mm | C1 |
| 1 | Conn_01x02_Male | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | Conn_01x04_Male | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | Fuse | haus-automatisierung:Fuse-PTF75_Stelvio | F1 |
| 1 | LOGO | haus-automatisierung:Logo2024 | G*** |
| 1 | SN74AHCT125 | haus-automatisierung:SN74AHCT125D | U2 |
| 1 | WT32_ETH01 | haus-automatisierung:WT32_ETH01_long | U1 |
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Questions
How big is the WS2812ControllerEthernet PCB?
It measures 26.9 × 73.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the WS2812ControllerEthernet use?
12 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 WS2812ControllerEthernet KiCad files?
From the klein0r/pcb-ws2812-ethernet-controller repository on GitHub, at the commit this page was made from: the board is WS2812ControllerEthernet.kicad_pcb and its schematic WS2812ControllerEthernet.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the WS2812ControllerEthernet design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).