Arduino Forum

Products => Arduino GSM Shield => Topic started by: talhatariq7 on Aug 19, 2017, 06:12 pm

Title: waveshare sim808 not connecting with mega2560. please help
Post by: talhatariq7 on Aug 19, 2017, 06:12 pm
sim808 sheild not working with arduino mega 2560.
please someone help.

buad rate is 115200.

working fine with arduino uno.
Title: Re: waveshare sim808 not connecting with mega2560. please help
Post by: lastchancename on Aug 20, 2017, 11:30 am
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.