firmware: https://drive.google.com/file/d/0B9oJ...
https://disk.yandex.ru/d/Hpo85kza34mUBR
Arduino Mega + Data logger shield (RTC not used)
pinout:
LiquidCrystal lcd(9,8,7,6,5,4),
buttons: left 30, right 31, enter 32, esc 33 (see "enum BtnPins_t ...")
SDcard (CS=10, MOSI =11, MISO=12, CLK=13),