VEML6075 ultraviolet (UV) light sensor and ESP32

The VEML6075 senses UVA and UVB light and incorporates photodiode, amplifiers, and analog / digital circuits into a single chip using a CMOS process. When the UV sensor is applied, it is able to detect UVA and UVB intensity to provide a measure of the signal strength as well as allowing for UVI measurement.

The VEML6075 provides excellent temperature compensation capability for keeping the output stable under changing temperature. VEML6075’s functionality is easily operated via the simple command format of I2C (SMBus compatible) interface protocol. VEML6075’s operating voltage ranges from 1.7 V to 3.6 V.

Parts Required

Here are the parts I used

you can connect to the sensor using a standard header the classic dupont style jumper wire.

Name	Link
ESP32		Aliexpress link Amazon Ebay
VEML6075		Aliexpress link Ebay link Amazon Link
Connecting cables		Aliexpress link Amazon Ebay

Schematics/Layout

esp32 and VEML6075

Code

Again we use a library  – https://github.com/NorthernWidget/VEML6075

#include <VEML6075.h>

VEML6075 UV;

void setup()
{
Serial.begin(38400); //Begin Serial
UV.begin(); //Begin the UV module

}

void loop()
{
Serial.print("UVA = ");
Serial.print(UV.GetUVA()); //Get compensated UVA value
Serial.print(" UVB = ");
Serial.println(UV.GetUVB()); //Get compensated UVB value
delay(1000);
}

Output

Open the serial monitor – this is what I saw but I tested this indoors

UVA = 0.00 UVB = 3.00
UVA = 0.00 UVB = 0.00
UVA = 0.00 UVB = 0.00
UVA = 0.00 UVB = 2.00
UVA = 0.00 UVB = 2.00
UVA = 0.00 UVB = 3.00
UVA = 0.00 UVB = 2.00
UVA = 0.00 UVB = 2.00

Links

https://www.vishay.com/docs/84304/veml6075.pdf