BTClock Web Installer

Version 3

2.13 inch displays (rev. A)

In most cases you have this version. All versions before block #841273 (2024-04-28) are rev. A.

The flasher is not available because your browser does not support Web Serial. Open this page in Google Chrome or Microsoft Edge instead (but not on your iOS device). Install using multiple parts

2.13 inch displays (rev. B)

First released on block #841273 (2024-04-28). If on the back it shows rev. B below the block hash, and you have a BOOT button next to the RESET button you have rev. B.

The flasher is not available because your browser does not support Web Serial. Open this page in Google Chrome or Microsoft Edge instead (but not on your iOS device). Install using multiple parts

2.9 inch displays (custom, experimental)

Offered as a courtesy, if you have the kit or bought it pre-built, you need the 2.13 inch version.

The flasher is not available because your browser does not support Web Serial. Open this page in Google Chrome or Microsoft Edge instead (but not on your iOS device). Install using multiple parts

Verify, don't trust

Source code of this website

When you are building it yourself, the first time you have to put the S3 mini in to boot mode: Press both side buttons at the same time (RST/BOOT), then first release the RST button and then the boot button.

If this website does not work, you can download full-firmware.bin from the releases page and use ESPHome Web Flasher to flash it instead.

How it works

ESP Web Tools works by using Web Serial and a manifest which describes the firmware. ESP Web Tools detects the chipset of the connected ESP device and automatically selects the right firmware variant from the manifest.

Web Serial is available in Google Chrome and Microsoft Edge browsers (but not on your iOS device). Android support should be possible but has not been implemented yet.