How do you configure f.e. the calendar, without bluetooth or something? Or is it just showing the days?
1-how did you program atmega328p-au (SMD)?
2- did you use external eeprom?
I used the SPI pins to burn the bootloader after the chip was soldered to the board. Then I used a serial programmer (like this) to install the code. You can see the RX, TX, RST connections near the edge of the board.No. The AtMega1284 has 4K of eeprom.
No. The AtMega1284 has 4K of eeprom.