Introduction: (IoT) Intertnet of Things With Ubidots (ESP8266+LM35)

About: I'am an Electronics student that really enjoy making new things from garbage, and DIY projects. I am here to share my knowledge with you, and learn with you too.

Today we are going to learn to use the Ubidots platform to visualize data over the internet in a friendly way.

Step 1: Materials and Assembly:


2-NodeMCU (ESP8266)

3-LM35 temperature sensor.

4-Some wire

Step 2: Arduino IDE Setting Up to NodeMCU:

Link to be pasted in preferences boards URL:

-Download the ESP8266 shields package in the boards manager.

-Select your board (NodeMCU).

-And that's it.

Step 3: Code Credentials Fill and Ubidots Account:

Go to , sign up, and search for your "default token" and paste it in the code, next to your Wi-Fi credentials.

Library and code here:

-Upload the code to the NodeMCU and verify that it got connected and says OK.

Step 4: Ubidots Config and Visualization:

1-Automatically a device called ESP8266 will appear on your Ubidots devices after uploading the code.

2-It will has a variable showing the lecture of the sensor in a range of 0-255.

3-We need to create a synthetic variable in function of the first one. To converte the 0-255 value into a Temperature (C) value we most use a function. ((value)*(3.3)*(100))/1024 = centigrade degrees.

4-We create a table in the data field, with a thermometer widget, typing the name of the variable (API LABEL), in this case is called "temp" and click ok.

5-And finally we are able to visualize the temperature of the sensor over the web, wherever we are, could be by the smartphone app and on.