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In this project, we will upload temperature using lm3k on thingspeak channel using arduino and gsm module.

Step 1: Stuff Required:

  1. Arduino uno
  2. Gsm module
  3. LM35
  4. Jumper wires
  5. Account on thikspeak
  6. 12 volt adapter for powering gsm module

Step 2: Connections

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

Step 3: Uploading the Code

Download the code from here:

Click here to download

The code is quite simple. You need to change apn as per your service provider. Also, you need to change the api key for thingspeak channel.

That's it

Happy learning !!

<p>i have try but can't work :( the data can't send to thingspeak.</p><p>in API, is that Write API Key or Read API Key?</p>
<p>It's Write API key</p>
<p>the data still can't send :(</p>
<p>There might be some problem with APN. Check out with terminal by giving AT commands.</p><p>Hope it will help you :)</p>
<p>still can't send :(</p>
<p>i can't make it.. is that any display on serial monitor on arduino ide? thanks</p>
<p>Yes, there is display on serial monitor on arduino IDE. You can check it in serial monitor</p>
<p>the coding and wiring is same looks like you</p>
<p>add more than one sensor, is it possible?</p>
<p>It's possible</p>
<p>Great project. I need to make some kind of temperature logger to monitor my indoor plants so that they don't freeze in the winter. I might have to try this.</p>
Thanks for the appreciation
<p>Hi, Thanks for the beautiful tutorial,</p><p>I'm trying to download the code but it seems like the link provided is inaccesible.</p><p>Is it possible that you sent it to me on mnyakukweni@gmail.com.</p><p>Your help will be much appreciated.</p><p>Yours,</p><p>Jovita</p>
<p>Thanks for the appreciation. I had sent the link to your mail.</p><p>Regards,</p><p>Chandan Kumar</p>

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Bio: Loves electronics, science fascinates me
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