Install the Video Alarm Clock firmware
Straight from this page, over a USB cable. No tools to install.
firmwareBefore you press it
- Plug the board into this computer by its UART port — not the OTG one.
- Close anything else holding the serial port: a serial monitor in another window is the usual culprit.
- Use Chrome, Edge, or Firefox 151+ on a desktop. Safari and iOS cannot do this at all.
This browser cannot flash a board. It needs Web Serial, which Chrome, Edge and Firefox 151+ have on the desktop, and which Safari and iOS do not have at all.
Open this page in one of those, or install from a terminal instead —
firmware/flash.sh
does the same job and works everywhere.
This page has to be served over HTTPS. You are seeing this because it was opened from a file or over plain HTTP.
Use the published page.
What it writes
The bootloader, the partition table, the OTA selector and the application,
merged into one image at offset 0 — the same file
flash.sh downloads, from the same release. It takes about half a
minute and the board resets into the clock face on its own.
Your alarms, Wi-Fi network, brightness and volume live in a separate part of the flash and are left alone, unless you tick Erase device when it offers.
Afterwards
On the device: gear icon → Wi-Fi, pick your network and type the passphrase. The time sets itself from the network a few seconds later.
You should not need a cable again. The clock updates itself from then on — gear → About → Check for updates.