R2P2-ESP32 Web Installer
Flash your ESP32 device directly from your browser — no toolchain required.
Before you start:
- Connect your ESP32 board to your computer via USB
- Use Google Chrome, Microsoft Edge, or Opera (this tool needs Web Serial)
- Know your board's target chip and which VM you want, to pick below
Select firmware
Loading the latest release...
Flash firmware
Your browser doesn't support Web Serial. Please open this page in Google Chrome, Microsoft Edge, or Opera instead.
This tool requires HTTPS (or localhost).
After flashing
Reset your device, then open the Web Terminal to start irb or run your first Ruby program.
Open Web Terminal →Prefer to build firmware yourself? See the docs →
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R2P2-ESP32 — PicoRuby on ESP32