Read and Display temperature sensor readings with NodeMCU.

For this activity we will be connecting the DS18B20 temperature sensor to the NodeMCU board. We will also build a web server to display the sesnsor readings.

What will you need ?

• DS18B20 temperature sensor

• NodeMCU ESP8266 Dev kit board.

• male-to-male jumper wires

• 4.7 k Ohm resistor

Setup the circuit

The DS18B20 temperature sensor can connected in two different configurations, namely, parasite mode and normal mode as follows:

Normal Mode

Normal Mode (randomnerdtutorial.com)

Parasite Mode