specification:
BB_BLACK interface: used to connect BB black DEBUG interface: BB black debug interface, used to connect the serial port module ONE-WIRE connector: Easily connect to the ONE-WIRE device (TO-92 package) such as temperature sensor (DS18B20), electronic registration number DS2401). Boot selection button: Boot from TF card User button: 4 buttons buzzer Power Indicator User LED: 4 LEDs Potentiometer: AD adjustable potentiometer 32.768KHz crystal: for RTC PCF8563: RTC RTC Battery Holder: For 3.3V battery RTC power selection jumper RTC I2C Select Jumper: Select I2C1 or I2C2 Due to different production batches, the color of the product may vary.
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