Ahhh those pesky GSM modules. Pay £40 for an adafruit one and it's all set up for you, or pay £5 for a SIM800 module on it's own and you're in for a world of debug. So I bought one (link below) and it's been a bit of a nightmare. Hoping for some sound advice. I'm not having a single issue with sen…

SIM800C Serial Read Problems

itmoto April 22, 2018, 12:47pm 2

From a mistake I made. Have you connected all the grounds together?

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