This is a Waveshare RTC WatchDog HAT for Raspberry Pi, Auto Reset, High Precision RTC. It is an easy way to enable a global positioning function for your Raspberry Pi.
What’s on Board:

Package Includes:
1 x Waveshare RTC WatchDog HAT for Raspberry Pi, Auto Reset, High Precision RTC
ODYSSEY – STM32MP157C Raspberry Pi 40-Pin Compatible with SoM
Waveshare 2-Channel Isolated RS485 Expansion HAT for Raspberry Pi 





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