4 layers77.1 × 39.9 mm
LEL Detector
citrineio/LEL-Detector
This project takes inspiration from my current job as a control and instrumentation engineer in the oil and gas industry.
77 parts11
2 layers46.5 × 91.9 mm
WS2812B Control PCB
nagars/WS2812B_ControlBoardA PCB for a WS2812B Power supply with an ESP32 Controller
- Size
- 46.5 × 91.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 34
- Pads
- 100
- Tracks, vias
- 180, 543
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 28 Aug 2026
- Updated
- 31 Oct 2026
Overview
WS2812B Control PCB is an open-source printed circuit board by nagars, from the nagars/WS2812B_ControlBoard repository on GitHub. It is a 2-layer board of 46.5 × 91.9 mm with 28 parts on 34 nets, routed with 180 tracks and 543 vias.
It is built around the TB002-500-02BE and CUS520,H3F(B. Its parts include 8 connectors, 5 resistors, 4 capacitors, 2 ICs and 1 switch. It belongs with the power boards of this library.
Main components
2README
README.mdWS2812B_ControlBoard
A dedicated Power Supply and Controller PCB designed to safely power and control WS2812B addressable RGB LED strips using an onboard ESP32 microcontroller.
Overview
A WS2812B LED Power supply and control board that can support power consumption of up to 3.5A (4A ceiling protected by a fuse) and wireless control using an esp32c6. Can connect up to 5 strips.
Power consumption calculation:
- 1 LED consumes 0.3W at max white light brightness.
- Reducing to 1 colour consumes 0.1 W.
- At 50% brightness, power consumption drops to 0.05W.
- As a result, in this configuration one can run a 300 LED strip at around 3A.
Key Features
- Integrated Power Management: Safely splits 5V power supply between the high-current LED strip and the ESP32. Schottkey diode allows ESP32 to be powered by USB without powering other circuitry.
- Blowout Protection: 3.5A fuse prevents power supply from burning out.
- ESP32 Powered: Leverage built-in Wi-Fi and Bluetooth to connect your LED project to smart home ecosystems (WLED, Home Assistant, ESPHome).
- Logic Level Shifting: Level shifter to bump ESP32's 3.3V GPIO data signal to the 5V signal required by WS2812B strips (prevents flickering and data corruption over longer distances).
- Decoupling Protection: large electrolytic capacitors to absorb sudden voltage spikes that could damage the LEDs.
Hardware Requirements & Recommendations
To fully utilize this board, you will need:
- Power Supply: A high-quality 5V DC power supply capable of supplying enough Amperage for your specific LED strip length (Formula:
Number of LEDs × 0.06A = Total Amps needed). - WS2812B LED Strip: 3-pin addressable strip (5V, Data, GND).
- Thick Gauge Wire: For connecting the power supply to the PCB, and the PCB to the LED strips, minimizing voltage drop.
Safety Warning
- Double-check polarities: No AC reverse polarity protection. Follow the silkscreen markers.
- Heat Dissipation: Watch for heating at high power loads.
Schematic Layout V1/V2
PCB Layout V1/V2
Schematic Layout V3
PCB Layout V3
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 470 | WS2812Board:RESC1005X40N | R1, R2, R3, R4, R5 |
| 5 | S3B-XH-ALFSN | WS2812Board:CONN_S3B-XH-ALFSN_JST | J4, J5, J6, J7, J8 |
| 3 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3 |
| 2 | 0.1uF | WS2812Board:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | C1, C8 |
| 2 | TB002-500-02BE | WS2812Board:CUI_TB002-500-02BE | J2, J9 |
| 1 | 1000uF | WS2812Board:CAP_RHA&slash_HS_8X11P7_NCH | C3 |
| 1 | 10uF | WS2812Board:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | C2 |
| 1 | 113991254 | WS2812Board:XIAO-ESP32-C6-DIP | U2 |
| 1 | C1T 3.5 | WS2812Board:C1_BEL | F1 |
| 1 | CUS520_H3F | WS2812Board:USC_TOS | S1 |
| 1 | Conn_01x05 | WS2812Board:PinHeader_1x05_P2.54mm_Vertical | J3 |
| 1 | JW5068A_Module /Mini 560 | WS2812Board:JW5068A_Module | M2 |
| 1 | LOGO | WS2812Board:viiking | G*** |
| 1 | LOGO | WS2812Board:moomin | G*** |
| 1 | MC74VHCT50ADTR2G | WS2812Board:TSSOP14_4P50X5P10_ONS | U3 |
| 1 | WCH CH224K | WS2812Board:WCH CH224K Module | M1 |
Questions
How big is the WS2812B Control PCB PCB?
It measures 46.5 × 91.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the WS2812B Control PCB use?
28 parts, built around the TB002-500-02BE and CUS520,H3F(B. 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 WS2812B Control PCB KiCad files?
From the nagars/WS2812B_ControlBoard repository on GitHub, at the commit this page was made from: the board is WS2812B_Control_PCB/WS2812B_Control_PCB.kicad_pcb and its schematic WS2812B_Control_PCB/WS2812B_Control_PCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the WS2812B Control PCB design in my own project?
Its repository states no licence, so its author keeps all rights: ask nagars before reusing the design.
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