Getting started with thingspeak | Posting DHT22 data to the thingspeak | Internet of things

In this video, we will see how to get started with Thingspeak, what is thingspeak, what we can do with the thingspak, how to create a channel in thingspeak, how to add widgets to the thingspeak, what wre the API keys, what is purpose of API keys, How to post data to the thingspeak, How to build a temperature and humidity monitoring solution using DHT22.

Here we will push temperature and humidity data to the thing speak.
Required Components:

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[electronicsinnovation]

If you wanted to know the interfacing of DHT22 with NodeMCU and circuit diagram kindly refer this previous video

[keshavdk]

Thank you very much for this clear explanation.


I have a query on ESP 8266 wifi module for smart air-conditioner. Can i post it here?

[fatherloz]

Thank you for this ! :) One question, i dont have anything connected to PIN D1 and D3 on the microcontroller and i can send info to thingpeak, everything works, so what is this 'power to sensor' section supposed to do ? thanks!
pinMode(D1, OUTPUT);
pinMode(D3, OUTPUT);
digitalWrite(D1, HIGH);
digitalWrite(D3, LOW);

[kishoret]

I'm getting an error "Failed to read data from DHT sensor"

[jeepcruiser]

Nice idea & video! Thank you! I will make it happen here.
How do you see the efforts for running / porting this on / to a ESP32 board? Maybe even with LoRa...

[aryangoel]

It shows "Failed to read from DHT sensor"