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

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 https://ubidots.com/ , 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.

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    Question 1 year ago on Introduction

    Hola Chris, felicitaciones por tus vídeos.
    Soy un aficionado que está experimentando con Iot, intenté hacer este experimento, pero equivoqué el modelo al comprar la placa y no puedo determinar cual de los pines de esta placa corresponde a la "Entrada Analógica" (A0) que usas para leer la señal del sensor de temperatura (Sé que "GND" es Tierra y "V5" corresponde a "VV").

    ¿me puedes dar una mano indicando cual sería el equivalente en mi placa? o si tienes algún enlace en donde pueda leer y aprender que hace cada pin de esta placa, me sería de mucha utilidad.
    ¿crees que la pueda usar esta placa para replicar tu experimento?