The Black Wire Maker's Technical Reference Guide
Know your board. Make the connection.
The Black Wire Maker's Technical Reference Guide is a searchable workbench for board pinouts, GPIO diagrams, displays, sensors, maker modules and practical wiring guides. Find ESP32, Arduino, Raspberry Pi, RP2040 and RP2350 references, compare model and revision notes, and open the original source documents. No installation needed.
A reference for your next maker project
Radio and GPIO references: Find new and expanded RAKwireless, Heltec, Elecrow, Seeed, H4M Pro, ESP32-MDK, Hat Labs, LOLIN and REYAX records. Exact model notes distinguish physical pinouts, schematics and missing documentation. Pinch images and PDF pages to zoom, drag to pan, or use the existing buttons. Read the radio guide · Viewer controls.
The new Wiring & protocols section includes 15 original connection diagrams for Ethernet and phone jacks, CAN, serial buses, I2C, SPI, SWD, JTAG and RFID/NFC modules. See when to use each connection, its revision-specific limits, practical checks and manufacturer sources. Open the wiring desk · Read the wiring guides.
Browse microcontroller and single-board computer references, OLED, LCD and e-paper display records, sensors, buttons, communication modules and power hardware. The power collection includes buck, boost, buck-boost and TP4056/TP4057 charger variants. Photos, physical pinout sources, pin-function tables and missing documentation are labeled separately.
Use the Black Wire red-and-black theme with gold accents, or switch to Light mode. Search across boards and modules, save useful boards locally, zoom diagrams and download original files. Windows and Linux DEB desktop packages include search and previews. Download original references inside the app for complete offline access, and use Updates & offline library for future app updates.
Read the reference wiki · Browse the board directory · Browse displays, sensors and modules
Download the latest Black Wire for Windows & Linux DEB · Explore the source collection on Gitea · Contribute a source or report a correction
Desktop installation, offline setup and updates. One Windows setup file is all you need; no separate library ZIP parts.
References load over your internet connection. Saved boards and measurements stay in your browser; use Export backup to keep a copy. If your browser blocks embedded storage or downloads, open the guide full screen.
Board diagrams retain their original creators’ credits and source notes. Confirm your exact board revision before wiring. Published power observations are distinct from your own measurements.
—your pal kal · @valleytechsolutions