- In Arduino IDE add "Arduino Mbed OS RP2040 Boards" in boards manager
- In Arduino IDE add "RTClib" in library manager
- Set the time on the clock to 'standard time' and change time to daylight saving time with slide switch
- R4 - 10K - use only when having problems with writing to memory
- R25 - 1K - use only with lithium rechargeable batteries
