Hello,
I have been trying desperately for several days to receive/send SMS from my SIM900 connected to my Arduino GIGA R1 WiFi. The module flashes every second which means that it's not connected to the network even though I've moved my sim into my smartphone and I manage to call/send SMS etc. just fine (I've also deactivated the pin code to make things easier).
Could you please help me? Thanks in advance.
Hello,
First, this is useless to translate in French (even tho I speak French) because in general section we HAVE TO speak english. All you could win is being moved to the French section and then get less answers.
I might have an idea of the problem. How are you supplying the module?
Please, if you want help, share some code, and also the schematics (even a hand made one) of your installation
Hi, thanks for your help.
My sim900 is supplied by the adapter 5V-2A included in the package. I tried every pins and no one worked. Same for codes... So I can't really provide you that. I know that I don't need libraries because that's only for Uno (I think). I also tried every TX/RX pins of my Arduino : The 1, 2 and 3 using Serial1/2/3.begin(9600/115200) but nothing worked...
Thank you
You still didn't provide any schematics
We don't know what you've tried so far
What's the size of the cables between the module and the power supply? You could make some pictures
Don't expect us to be able to help you if you give us nothing
You should try to communication by AT commands to see if you get something
If I recall well, at the end of each command sent, you need to write a '\n' character (to be confirmed, could be another I'll let you check that)
With the Arduino monitor you cannot send it. You should use another monitor such as Realterm or Putty. Or you deal with this in your arduino sketch to add this specific character at the end of your command