[en]Elekfreaks send us a gprs arduino shield in order to review it. It can send data, sms or audio using GPRS by any of the four band (850/ 900/ 1800/ 1900 MHz ). The shield contains a RTC (feed by a supercap
[en]Elekfreaks send us a gprs arduino shield in order to review it. It can send data, sms or audio using GPRS by any of the four band (850/ 900/ 1800/ 1900 MHz ). The shield contains a RTC (feed by a supercap