Hi there! I'm thinking on an idea of sending multiple messages written on my PC (maybe connecting arduino with PHP based website that I would make locally ) and send it using an arduino and multiple GSM modules (connected with arduino) to different numbers at once. I want to know that what should be…

Multiple GSM module with arduino

anon57585045 November 27, 2017, 6:27pm 3

Why multiple modules? Usually you can call a lot of different numbers from one phone.

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