Whether you want to listen to what happens in your house that’s miles away from you or activate sprinkler system in your garden just with a silent call; Then SIM900 GSM/GPRS shield serves as a solid launching point for you to get you started with IoT! SIM900 GSM/GPRS shield is a GSM modem, which can … Continue reading Send Receive SMS & Call with SIM900 GSM Shield & Arduino