37. 18B20 Temperature Sensor

37.1. Introduction

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

microbitplanetX\./images/05041_01.png

37.2. Characteristic


  • Designed in RJ11 connections, easy to plug.

37.3. Specification


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

37.4. Outlook


microbitplanetX\./images/05041_02.png

37.5. Quick to Start


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.

microbitplanetX\./images/05041_03.png

37.6. MakeCode Programming


Step 1

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

../_images/05001_04.png

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.

../_images/05001_05.png

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.

Step 2

Code as below:

../_images/05041_06.png

Result

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

37.7. Relevant File


37.8. Technique File