LED Ticker

/ firmware

Flash from your browser.

Update your LED Ticker over USB — no PlatformIO, no toolchain. Plug the board into your computer, click Install, pick the serial port.

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Chrome or Edge on a desktop only. Browser flashing uses the Web Serial API, which Safari, Firefox, and all phone browsers don't support. On those, use the PlatformIO route instead.
Your browser can't flash over USB — open this page in Chrome or Edge on a desktop. This page must be served over HTTPS to flash.

Latest released firmware: …

Steps

  1. Connect the board to your computer with a USB-C cable.
  2. Click Install / update firmware and choose the device's serial port in the browser prompt.
  3. Let it write and verify, then press the board's RESET button.

If it won't connect

Most of the time the board resets into flashing mode on its own. If the port doesn't appear or flashing stalls, put it into download mode by hand: hold BOOT (GPIO 0), tap RESET, then release BOOT — and try again.

A fresh install erases the device, so it comes back up in setup mode with a new pairing PIN (same as a factory reset). Your Wi-Fi and Finnhub key need re-entering afterward.

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