DS1302 RTC Real Time-3-Wire Real Time Clock Module For Arduino ESP8266 Raspbe
1,19 €
Decided to use 24 hour format. set way communication. DS1302 low-power work to maintain the data and clock information when power is less than 1mW. only three port lines: (1) RST Reset (2) I / O data lines (3) SCLK serial clock.
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