Heliograph — web installer

Before you start

1. Use Chrome or Edge on a computer (WebSerial does not work in Firefox/Safari, or on phones).
2. Connect the ESP32-S3 board to this computer over USB.
3. Click Connect below and pick the serial port that appears.

Install Which board do you have? It is printed on the PCB. Waveshare ESP32-S3-RS485-CAN Waveshare ESP32-S3-Relay-1CH Waveshare ESP32-S3-Relay-6CH

This writes a full factory image: a board that was already set up will lose its settings (WiFi, passwords) and start over at the setup portal. Updating an already configured bridge is easier over the air: open its web page and use Settings → Firmware update with the matching heliograph-*-<board>.bin from the latest release.

After flashing: the device starts an access point named Heliograph-Setup-XXXX. Join it and the setup page opens by itself.