37. 18B20 Temperature Sensor(EF05041)#

37.1. Introduction#

It is a digital tempeterature sensor based on 1Maxim IC DS18B20 1-Wire.


37.3. Characteristic#

Designed in RJ11 connections, easy to plug.

37.4. Specification#

Item Parameter
SKU EF05041
Connection RJ11
Type of Connection Digital output
Working Voltage 3.3V

37.5. Outlook#


37.6. Quick to Start#

37.6.1. Materials Required and Diagram#

Connect the 18B20 Temperature sensor to J1 port and the OLED to the IIC port in the Nezha expansion board as the picture shows.


37.7. MakeCode Programming#

37.7.1. Step 1#

Click “Advanced” in the MakeCode drawer to see more choices.


We need to add a package for programming, . Click “Extensions” in the bottom of the drawer and search with “PlanetX” in the dialogue box to download it.


Note: If you met a tip indicating that the codebase will be deleted due to incompatibility, you may continue as the tips say or build a new project in the menu.

37.7.2. Step 2#

37.7.3. Code as below:#


37.7.5. Result#

The value detected by 18B20 temperature sensor displays on the OLED screen.

37.8. Relevant File#

37.9. Technique File#