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Topic: waveshare sim808 not connecting with mega2560. please help (Read 394 times) previous topic - next topic

talhatariq7

sim808 sheild not working with arduino mega 2560.
please someone help.

buad rate is 115200.

working fine with arduino uno.

lastchancename

That's a very nice modem shield  :smiley-confuse:

Before getting your own code to run - load up a simple local echo program to send your typing to the modem and vice versa.  That will let you know you have communication to the modem.

You can check the modem connection status, etc

After that - you can start faffing around with a functional sketch, but always keep that echo code nearby so you can see what is expected & returning.
Ask the right question, which can be hard for beginners, but this doesn't mean that google is broken.
Experienced responders have a nose for laziness, (they were beginners once)... expecting the poster to contribute to the learning experience.

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