SIM800L troubleshooting

Projects General Guidance
1

Good afternoon. This is my first post on this forum. I hope it will prove efficient. Here is my problem that i could use some help on:

GSM SIM800L module, I want to connect it to either Arduino or ESP32 - i am working on both at the same time - arduino is for testing purposes.

End purpose is to send a message to my phone using the GSM SIM800L module.
I have tried quite a lot of wiring, most of the stuff on youtube i have watched.

I have made sure i have the right voltage ( using a variable power supply), I have made sure the SIM card is working - tested on my phone, the GSM SIM800L module is brand new + i have tried with Version 1 and 2 of the SIM800L.

I was told the code itself might be an issue, i have not explored that yet, i was under the impression that a SIM card connects automatically to a network when the module is powered on,

All ideas are welcome

Regards
C.M.

2

Not very likely, without reading the forum guidelines. If you did, you need to go back and review.

3

Can you pass me a link please i do not know my way around this one yet

4

...

5

Post your code and a picture (hand drawn is fine) of how everything is connected... then you should get some better help.

6

I would say that for a starter you read this article:

Please do not just blindly follow youtube tutorial, as the majority of them are incorrect.

Is your arduino a 5 volt one? If so do you have the appropriate voltage divider from the arduino TX to the modules RX?

as @red_car mentioned, a circuit diagram would be nice.

7

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