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I would like an electronic device that is programmable to send a text to a defined (by input) mobile number. Text simply says alarm activated at xxxx hrs (time of activation). The unit needs to be relatively small and the overall cost of components should be less than £25 (the cheaper the better).
I would like the design,circuit drawings, components and circuit board design.
It would be good if you could make a prototype to try out.
The input signal can either be electrical or auditory or vibratory whichever works best. I leave that up to you.
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