Example Code for Raspberry Pi-UV Index Reading

Hardware Preparation

• Raspberry Pi 3B+ (Quantity: 1)
• Gravity: VEML6075 UV Sensor (SKU: SEN0303, Quantity: 1)

Software Preparation

• Development Tool: Python 3 (pre-installed on Raspberry Pi OS)
• Library: DFRobot_VEML6075 Library (Download Link)

Wiring Diagram

Connect the sensor to Raspberry Pi 3B+ as shown below:

• Connect the sensor VCC to Raspberry Pi 3.3V
• Connect the sensor GND to Raspberry Pi GND
• Connect the sensor SCL to Raspberry Pi SCL (BCM P3 / Physical Pin 5)
• Connect the sensor SDA to Raspberry Pi SDA (BCM P2 / Physical Pin 3)

Other Preparation Work

1. Enable I2C on Raspberry Pi: Follow the official guide.
2. Download the DFRobot_VEML6075 Library to your Raspberry Pi.
3. Enter the directory of Raspberry Pi example codes

   cd /DFRobot_VEML6075-master/python/raspberry/examples
   

4. Run Raspberry Pi example codes

   python DFRobot_VEML6075_demo.py
   

DFRobot_VEML6075_demo.py

# -*- coding: utf-8 -*-
'''!
  @file DFRobot_VEML6075_demo.py
  @brief normal test for VEML6075
  @n     UVA index, UVB index and UV index will print on terminal 
  @copyright  Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
  @license     The MIT License (MIT)
  @maintainer [Fary]([email protected])
  @version  V1.0
  @date  2021-10-18
  @url https://github.com/DFRobot/DFRobot_VEML6075
'''

import time
import sys
sys.path.append("..")

from DFRobot_VEML6075 import DFRobot_VEML6075

if __name__ == '__main__':

  VEML6075 = DFRobot_VEML6075(1, 0x10)  # use i2c bus 1, module address is 0x10

  while VEML6075.begin() != True:
    print("VEML6075 begin faild")
    time.sleep(2)
  print("VEML6075 begin succeed")

  while True:
    Uva = VEML6075.get_uva()           # get UVA
    Uvb = VEML6075.get_uvb()           # get UVB
    Uvi = VEML6075.get_uvi(Uva, Uvb)   # get UVI
    print("")
    print("======== start print ========")
    print("UVA:     %.2f" %(Uva))
    print("UVB:     %.2f" %(Uvb))
    print("UVI:     %.2f" %(Uvi))
    print("mw/cm^2: %.2f" %(VEML6075.uvi2mwpcm2(Uvi)))
    print("======== end print ==========")
    time.sleep(1)

Result

The terminal will display UVA, UVB, UVI, and intensity values. A sample output is shown below: