How to recieve data from my channel through sim800 and turn ON relay
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Pls I need help to read my channel field last value (1 or 0) and in turn switch on a relay connected to my arduino pin using sim800l. I don't know how to go about the code for it. Anyone with a link to an example or a guide pls. My channel field is been updated with a "1" or "0" from my mit app inventor mobile app. In return I want to turn on a relay on/off when this field is updated by using sim800l to be checking the field last value
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