22. UV Sensor(EF05021)¶

22.1. Introduction¶

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

../_images/05021_01.png

22.2. Products Link¶

ELECFREAKS PlanetX UV Sensor

22.3. Characteristic¶

Designed in RJ11 connections, easy to plug.

22.4. Specification¶

22.5. Outlook¶

../_images/05021_02.png

22.6. Quick to Start¶

22.6.1. 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.

../_images/05021_03.png

22.7. MakeCode Programming¶

22.7.1. 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.

22.7.2. Step 2¶

22.7.3. Code as below:¶

../_images/05021_06.png

22.7.4. Link¶

Link: https://makecode.microbit.org/_LLyW1FH0hC8D

You may also download it directly below:

22.7.5. Result¶

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

22.8. Python Programming¶

22.8.1. 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

22.8.2. Step 2¶

22.8.3. Reference¶

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

22.8.4. Result¶

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