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DS1307 RTC Mini Clock Display Module + 4-Digit Display Module for Arduino - Blue + Black + White
The Mini Display Kit is based on the DS1307 RTC module and the 0.36¡± 4-Digit Display module. You can DIY a mini clock after uploading the appropriate code to your Arduino UNO R3. The DS1307 RTC module communicates with the arduino board via I2C interfacde£¬ and it can provide year£¬ month£¬ day of month£¬ day of week£¬ hour£¬ minute£¬ second of the real time. There is a CR1220 battery on board so that the IC will continue timing even if the module loses power. The driver chip of the 4-Digit Display is tm1637 and it can be used to display the integer£¬ clock£¬ stopwatch£¬ score and so on. The features are as follows: 1. Compatible with Arduino UNO£¬ MEGA2560£¬ Leonardo; 2. 8 adjustable gray of the display; 3. Power supply can be 4.5~5.5VDC 4. Logic level of the interface can be 3.3V / 5V; 5.Each module has 4 screw mounting holes whose diameter is 2.2mm; 6.Nylon screws and nylon hex socket nuts are included in the package so that you can stack the two module together.