Real Time Clock RTC DS1307 Module -arduino compatible
DS1307 is a real-time chip of DALLAS company,which adopt I2C protocal to communicate with SCM,  therefore is very convenient to link with each other. This product can be used to drive LED lights, as it have a programmable waveforms output, or trigger a certain event as a break off, but be careful when you use it to take some kind of high power module. We design the real clock module to pin out the I2C interface of Ds1307 and programmable waveforms output interface SQW are connected, but usually we will only use the I2C interface to realize basic set the clock/read function. This module communicate with Arduino through the I2C interface.This module can be used with Special Sensor Shield V4.You can do some simple design about it，it support"plug and play".In circuit connection, we can use sensor shield V4 board, but set the corresponding jumpers wires to IIC position.