Temperature logger using arduino and thingspeak

Hello Arduino lovers,

In this tutorial, we are making a temperature logger using arduino and thingspeak.
Let's start

Things required:

1. Arduino Uno
2. LM35
3. Sim900 module
4. Internet pack 
5. Thinkspeak account

Make connections as given in the diagram. Connect Tx of GSM module to pin number 7 of arduino board and Rx of of GSM module to pin number 8 of arduino uno and ground should be common between these two.

Output of LM35 should be connected to A0 of arduino board.

Arduino Uno GSM module LM35

Pin no. 7 Tx

Pin no. 8 Rx

Pin no. A0 Output of Lm35

Download code from link below

Download code

Now, upload the code

Video:

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