Hey. I just bought New SIM900A V4.0, but there was no manual so I’m a bit confused of how to use it. I was looking for tutorials in google, but couldn’t find anything useful for my module particularly (I attached photo of it). Do anyone knows any tutorials related to how to connect it to Arduino Meg…

Arduino Mega and SIM900A tutorial

dannable November 22, 2015, 8:10pm 4

I have limited bandwidth so I won't be looking at the images provided I'm afraid.

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