ESP32-C3 · I²C · OLED
ESP32-C3 OLED
Run a clock sketch and watch the OLED update live.
Open in PlaygroundWhat do you
want to build?
Design circuits, run firmware, compare variants, and inspect the result in Playground.
Nokia 5110 · Try it live →
Open source
How it works
Describe hardware. Run the firmware. See it in Playground.
1
Describe it
Type what you want, pick a lab, or connect MCP.
2
Run it
Firmware runs in the browser — display, UART, buses.
3
Check the result
Same setup can run in CI. Compare builds before you order a board.
Projects
Six working starters across MCUs, sensors, displays, wireless, and industrial buses.
STM32L476 · SPI · Ultrasonic
Nokia 5110 Breakout
Move the ultrasonic input and steer a real firmware game.
Open in Playground
nRF52840 · GPIO · BLE
Proximity + BLE
Change the distance — the alarm LED and wireless alert follow.
Open in Playground
Multi-board · IO-Link · Analyzer
IO-Link Master Station
Run a master and two devices together and watch the industrial bus.
Open in Playground
STM32H5 · CAN-FD · UDS
STM32H5 UDS ECU
Send car diagnostic messages and see the ECU reply, decoded.
Open in Playground
RP2040 · Cortex-M0+ · UART
Raspberry Pi Pico
Boot real Pico firmware and read what it prints on serial.
Open in PlaygroundFrom the community
Member-published labs — same as above: open in Playground.
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Try one of these
Open source
MIT · Rust core
ARM · RISC-V · Xtensa
Cortex-M0+ through M33
No hardware
Run firmware in the browser
Agents
Claude / Codex over MCP.
Claude, Codex, Cursor, VS Code, OpenCode
Add LabWired. Open Playground.
curl -fsSL https://labwired.com/mcp.sh | sh
Windows: irm https://labwired.com/mcp.ps1 | iex. The installer registers the hosted MCP connector with every supported agent it finds. Manual: claude mcp add labwired --transport http https://api.labwired.com/mcp · codex mcp add labwired --url https://api.labwired.com/mcp