I wrote this few lines to make the test of communication between Arduino M0 and Sim900a but in the serial Monitor there is no result afferming that the communic
I'm desperately looking for a solution for my SIM800l v2. The network LED just keeps blinking every second. It does not restart but it keeps blinking and not pi
I am trying to send message from GSM modem. I can submit AT commands the response is OK without any ERRORS. But the problem is I can't send message or read mess
Using VB.NET I need to send a SMS using GSM modem to a mobile phone. Currently I have the following code: Private Sub Button1_Click(ByVal sender As System.Obj