2 layers33 × 45 mm
PixelBoard
hamzaa-exe/PixelBoard
LED display using Sparkle Motion and a 16x16 NeoPixel matrix. Use WLED software to play awesome animations that are designed for 2D matrices.
21 parts1MIT
2 layers
Exp32-atx powerboard
fordcrews/SmartLED-vPinball-Power-Board1SmartLED v1 is a modular, ATX-powered breakout board designed for ESP32-based lighting, solenoid, and accessory control projects such as:
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 38
- Nets
- 96
- Pads
- 294
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 21 May 2025
- Updated
- 21 May 2025
Overview
Exp32-atx powerboard is an open-source printed circuit board by fordcrews, from the fordcrews/SmartLED-vPinball-Power-Board repository on GitHub, published under the MIT licence. It is a 2-layer board with 38 parts on 96 nets.
It is built around the 74AHCT125D and ESP32-WROOM-32. Its parts include 16 connectors, 10 fuses, 3 ICs and 1 resistor. It belongs with the ESP32 boards of this library.
Main components
2
74AHCT125D
SOP-14-40℃~+125℃ 1 4 4.3ns@5V,50pF 4.5V~5.5V 40uA 74AHCT 8mA 8mA Schmitt trigger Tri-State Unidirectional SOP-14 Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffer/Driver/Transceiver
ESP32-WROOM-32
SMD,18x25.5mm-40℃~+85℃ -98dBm 2.4GHz 2.7V~3.6V 20dBm Bluetooth4.2 ESP32-DOWDQ6 UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
README
README.mdSmartLED & Pinball Power Board v1
Overview
SmartLED v1 is a modular, ATX-powered breakout board designed for ESP32-based lighting, solenoid, and accessory control projects such as:
- Virtual Pinball Machines
- Holiday Light Shows
- Aquarium Automation
- Home Decor Lighting Systems
Features
🔌 ATX/Mini-ITX Power Supply Input
- Standard 24-pin ATX connector
PS_ON#control via MOSFET (GPIO or jumper selectable)- Uses
+5VSBto power ESP32 independently of main rails
🧠 ESP32 DevKitC Integration
- Supports 30-pin DevKitC boards
- Powered by +5VSB with onboard regulation
- Breakout header for unused GPIOs
💡 Buffered LED Outputs (8x)
- 3-pin JST outputs with:
- AHCT125 level shifters (3.3V to 5V)
- Selectable 5V or 12V via jumper
- Fused output per channel
🧰 Dual Terminal Access
- Breadboard header (J10) and cabinet terminal block (J11)
- Shared pinout, use either or both
🧩 GPIO Expansion
- I²C header (GND, VCC, SDA, SCL)
- Additional GPIOs for sensors, encoders, buttons, etc.
🔋 MOSFET Driver Sockets
- 2–4 TO-220 MOSFET slots (e.g. IRLZ44N)
- Gate control via GPIO or jumper
- Voltage selectable (5V/12V AUX)
- For solenoids, fans, relays, motors, etc.
🔌 Power Outputs
- USB-C / Micro USB 5V outputs
- 5V/12V Barrel jack outputs
- Drive external Pi, LED drivers, amps, etc.
⚡ Cabinet Power Switch Output
- Optional switched line to control cabinet-wide power
- Triggered via ESP32 or logic jumper
Optional / Phase 2 Ideas
- Break-off compact section
- Raspberry Pi header (Zero/Full support)
- OLED display pinout for power/usage stats
- Software-based PSU shutdown/watchdog
Design Goals
- One ATX cable powers your entire rig
- Clean, modular, safe wiring
- Minimalist or advanced builds supported
- Great for compact lighting builds or full-featured pinball control systems
📁 PCB, schematic, BOM, and KiCad project files coming soon!
Parts
38| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | Fuse | Fuse:Fuseholder_Blade_Mini_Keystone_3568 | F1, F2, F3, F4, F5, F6, F7, F8, F9, F10 |
| 8 | Conn_01x03 | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J1, J2, J3, J4, J5, J6, J7, J8 |
| 8 | Jumper_3_Open | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8 |
| 3 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J12, J13, J18 |
| 2 | 74AHCT125 | Package_DIP:DIP-14_W7.62mm | U2, U3 |
| 2 | Conn_01x02 | Connector_BarrelJack:BarrelJack_Horizontal | J16, J17 |
| 2 | Conn_02x12_Top_Bottom | Connector_PinHeader_2.54mm:PinHeader_2x12_P2.54mm_Vertical | J10, J11 |
| 1 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | Conn_02x12_Top_Bottom | Connector_Molex:Molex_Mini-Fit_Jr_5566-24A2_2x12_P4.20mm_Vertical | J9 |
| 1 | ESP32-WROOM-32 | esp32:ESP32-DevKitC_30Pin | U1 |
Similar boards
- 2 layers100 × 100 mm
- 2 layers333.4 × 149.9 mm
- 2 layers45 × 54 mm
- 2 layers333.4 × 149.9 mm
- 2 layers273.8 × 109 mm
TrueStrike42
byungyoonc/TrueStrike42
TrueStrike42 is a columnar staggered unibody split keyboard designed to maximize performance and minimize finger fatigue.
167 parts24 - 4 layers65.4 × 53.3 mm
Waterdrop esphome
twasilczyk/waterdrop-esphome
Waterdrop RO system smart Wi-Fi module for Home Assistant
39 parts15MIT - 2 layers345 × 105.6 mm
Pov display
usedhondacivic/ECE-4760-POV-Display
Persistence of vision display. 30 FPS, full RGB color, and 26" diameter. Updates remotely over WIFI.
50 parts13
Questions
What parts does the Exp32-atx powerboard use?
38 parts, built around the 74AHCT125D and ESP32-WROOM-32. 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 Exp32-atx powerboard KiCad files?
From the fordcrews/SmartLED-vPinball-Power-Board repository on GitHub, at the commit this page was made from: the board is exp32-atx-powerboard/exp32-atx-powerboard.kicad_pcb and its schematic exp32-atx-powerboard/exp32-atx-powerboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Exp32-atx powerboard 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).