Install

Flash Frothy from the browser, check the board, and start writing.

You do not need to clone Frothy or install a compiler to get started. The browser flasher installs ready-made firmware, and the browser editor talks to the board directly over USB.

What You Need

a supported ESP32 board and a USB data cable
desktop Chrome, Edge, or Opera
macOS, Linux, or Windows

1. Flash The Board

Open the Frothy browser flasher , choose your board, and select Flash Frothy. Keep the page open until the progress bar reaches the end and the board resets.

The flasher uses Web Serial. Your browser will ask which serial device it may use; choose the ESP32 you plugged in.

2. Check Frothy

Choose Check Frothy on the flasher page. This sends a small status request and confirms that the board is reachable and running Frothy.

If the check cannot reach the board, close other applications using its serial port, press the board’s EN button (or unplug and reconnect it), and try again.

3. Start Writing

Continue to the browser editor , choose Connect, and select the same board. Put the cursor in a complete form and choose Run Form, or select one complete form and run that selection. Run File sends the complete sketch in order.

Edits save locally in the browser. Use Download .fr when you want a normal file copy.

VS Code And The CLI

Install the Frothy extension from the VS Code Marketplace (publisher: NikolaiKozak) when you want a local project workflow. The extension uses the installed frothy CLI for serial sessions; the browser tools do not.

Homebrew is the intended packaged CLI path. It installs the CLI, esptool, and the official release firmware, so frothy flash BOARD does not require a source checkout or ESP-IDF. The new tap is not published yet, so there is no honest Homebrew command to run today. Until the first packaged release, follow the developer setup to build the CLI from source.