Hello, I would like a help, I have a problem with my GSM shield sim900, I can not connect it in MEGA, so I'm testing it and when I do the comission it says it's on, but not communicating, someone can help me, thank you .

Shiel GMS SIM900.

Projects Networking, Protocols, and Devices

Nick_Pyner November 6, 2017, 10:51pm 2

This may turn into a discussion about powering the GSM shield. You need to describe the connection and the power supply, or even the power supplies, plural.

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Shiel GMS SIM900.

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