I purchased this exact same setup: http://www.open-electronics.org/wp-content/gallery/gsm-shield/gsm-shield-3.jpg I have it working, everything seems fine, but I want to be able to switch relays on and off with an SMS. I have tried several different things that I've found, but nothing is working fo…

Help with SMS controlling the relay shield

system May 10, 2012, 5:33pm 3

I'm sure lots of people use the simcom 900 to do automation via text/sms... Any help?

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