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how to read the Digital Pin
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Karthikraja Nagendran
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October 5, 2016 - 6:56 am
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Hi Guys,

 

I have the capacitive type Proximity sensor that sensor operates at 12volts and output only NO and NC (digital Output ). How to send the Thinkspeak Fields... Already I send the temprature data pressure data fileds using Arduino Uno .... Please guide me 

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jvasudev

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October 21, 2016 - 1:06 pm
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You can directly send the states "NO" and "NC" to the ThingSpeak channel field as they are. ThingSpeak fields accept non-numeric entries too, however you may see that the field visualization does not update. To see the field value you can send a GET request to get the field value as shown here: Get a Channel Field Feed.

Alternatively, you can encode these two states as either 0 and 1 and send the numeric value to the ThingSpeak field, so that now you can see how the field visualization updates between these two states. 

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