Hello.
I've been working on a laser-triggered alarm that alerts you via a call from the GSM module, but I've encountered a few problems.
The modules' LED is blinking every second which means it's not connected to the network. The weird thing is, it used to work just fine yesterday and I was able to make calls, send messages etc. That being said, I also had similar problems before, but I mostly resolved them by resetting the Arduino a few times, unplugging the battery, etc., well not this time. I'm using a 18650 3S battery pack and a DC-DC buck converter to power the module with 4.1V as it was recommended. I've done my research and most people say it's the power issue, but I don't see how I could fix/improve it since I'm supplying the correct voltage.
I'm currently using the default code to test the module, which I'll attach, including the serial monitor. For the schematic, I'll attach only a part, because the rest is not relevant since it's just the rest of the alarm system (the board in the schematic is Arduino nano, I'm still using the Uno, the pin connections, however, are accurate).
It's my first time posting so I hope I didn't leave anything out, thanks for reading and if anyone has experience with this module, help would be greatly appreciated.
codetest.ino (1.24 KB)
