22. UV Sensor

22.1. Introduction

It is able to measure the total UV intensity of the sunlight.

microbitplanetX\./images/05021_01.png

22.2. Characteristic


  • Designed in RJ11 connections, easy to plug.

22.3. Specification


Item Parameter
SKU EF05021
Connection RJ11
Type of Connection Analog output
Working Voltage 3.3V

22.4. Outlook


microbitplanetX\./images/05021_02.png

22.5. Quick to Start


Materials Required and Diagram


  • Connect the UV sensor to J1 port and the OLED to the IIC port in the Nezha expansion board as the picture shows.

microbitplanetX\./images/05021_03.png

22.6. 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/05021_06.png

Result

  • The detected value from the UV sensor displays on the OLED screen.

22.7. Python Programming


Step 1

Download the package and unzip it: PlanetX_MicroPython

Go to Python editor

../_images/05001_072.png

We need to add enum.py and uvlevel.py for programming. Click “Load/Save” and then click “Show Files (1)” to see more choices, click “Add file” to add enum.py and uvlevel.py from the unzipped package of PlanetX_MicroPython.

../_images/05001_081.png ../_images/05001_091.png ../_images/05021_10.png

Step 2

Reference

from microbit import *
from enum import *
from uvlevel import *
uvlevel = UVLEVEL(J1)
while True:
    display.scroll(int(uvlevel.get_uvlevel()))

Result

  • The detected value from the UV sensor displays on the micro:bit.

22.8. Relevant File


22.9. Technique File