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How to read data from ThingSpeak and control LED
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December 15, 2020
6:53 am
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December 15, 2020
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I'm working on SIM800L with arduino and try to read data from ThingSpeak. I can read my channel field last value (1 or 0) using AT+HTTPREAD command. But the content get from is -1 not one or zero. I want to read 1 or 0 and then turn on/off LED. How to get the data of field from the response of AT+HTTPREAD?

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