wemos D1 RTC shield with a DS1307 RTC.
Posted: Sat Jun 03, 2017 2:04 pmHi all, there is a wemos D1 shield with a DS1307 RTC. Does anyone know what data pin is used for the SQW output on this shield. I know the DS1307 RTC chip has the capability of generating a 1HZ square wave and that can be tied to a data pin configured for input and tied to an interrupt routine. I cannot find the details on which data pin is used on the wemos d1 shield. I would be grateful for any information or a circuit diagram of the shield.
** Update ** I have received a reply from the manufacturer robotdyn.com and it appears that the SQW pin on the DS1307 has not been connected and is therefore not accessible without modification to the shield.
** Update ** I have received a reply from the manufacturer robotdyn.com and it appears that the SQW pin on the DS1307 has not been connected and is therefore not accessible without modification to the shield.