Some resources to help you getting started with STM32 programming.
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Use this data record mask to be a WiFi D1 Mini board that can save data to any FAT16 or FAT32 format MicroSD card. The included RTC (Real Time Clock) can be used to time stamp all data at the current time so that you know exactly what is going on!
The SD card interface is used with cards in FAT16 or FAT32 format.
The real-time clock (RTC) remains in time even when the power is turned off. The last date and time of the coin battery backup.
The RTC protection battery is not connected properly.
D1 - SCL
D2 - SDA
D5 - CLK
D6 - DO
D7 - DI
D8 - CS
1PC * Micro SD Wemos D1 Mini Data Logger Shield + RTC DS1307 Raspberry Clock