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
flach
2
I have the same issue stop working (Arduino UNO - SIM800L) and I added an extra power supply (3-amps) then worked.
I am using a buck converter that can supply 5v 5a tho. Tried also in a power brick 3a, not working
flach
4
Try to connect over USB-TTL converter by AT commands.
system
Closed
5
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