[elecena] D1 Shield - Real-Time Clock, DS1307 - zmiany ceny With this RTC-Shield the D1- Mini can be extended by real time clock. - DS1307 chipset - optional: CR1220 backup battery Pinout - 5 V: 5 V power supply - D1: SCL - D2: SDA - GND: Ground Note:Delivery includes 6 pin headers (2x 8 pin male - male, male - female, male long pin - female each). CR1220 button cell not included! D1 Shield - Real-Time Clock, DS1307 - 4.38 EUR https://elecena.pl/product/19012079/d1-shield-real-time-clock-ds1307 2021-07-07 D1 Shield - Real-Time Clock, DS1307 - 4.39 EUR https://elecena.pl/product/19012079/d1-shield-real-time-clock-ds1307 2025-02-08