Optiboot UART bootloader. Baud set to 57600 for maximum compatibility.
Optiboot UART bootloader. Baud set to 1000000 which is the fastest an 8MHz AVR can run its UART at. Reduces upload time from ~14 seconds to ~5 seconds (27174 bytes).
Tested on Windows and Linux with CH340G USB-serial converter. Should work with most other converters. However AVRDUDE on Linux needs a minor modification to support 1Mb, see this - https://github.com/zkemble/avrdude/tree/custombaud
The main program in English.
The main program in Russian.
EEPROM data. This must be uploaded along with watch_(lang).hex
, it contains the beep tunes and other bits of data.