Connect ESP3266 to sensor

Connecting this ESP3266 to a temperature sensor is easy. All you need to do is a datasheet.

We will use DS18b20 temperature sensor. There are 3 pins for this sensor which are GND (Ground), VCC (Voltage Common Collector), and SIG (Signal).

How we connect the sensor to ESP3266:

  • GND (Red): To "G" pin of ESP3266

  • VCC (Green): to 3V pin of ESP3266

  • SIG (Yellow): to D4 pin of ESP3266

Oh, don't forget a resistor (330 ohms) between a 3V pin and D4 pin.

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Assoc. Prof. Wiroon Sriborrirux, Founder of Advance Innovation Center (AIC) and Bangsaen Design House (BDH), Electrical Engineering Department, Faculty of Engineering, Burapha University