Is it possible that the board of the SIM 900 board got shorted?
The deal here is:
- I can connect to the network (led light blinking at 1 blink / 3 sec)
- The Arduino Uno is working, I've tried moving the sensor pins and it still works.
- I cannot connect my GSM module to the Arduino.
- It used to connect to the Arduino and can send SMS, but suddenly it stopped working. No Serial responses or anything on cmd, no sms