1.Product Introduction

UV Sensor is a test of the best amount of ultraviolet sensor, can use the photosensitive element by photovoltaic mode and light guide mode converted ultraviolet signal into measurable electrical signal, it does not need to use the wavelength filter, only sensitive to ultraviolet, direct output corresponding ultraviolet index (UV INDEX) linear voltage, output voltage range about 0 ~ 1100 mV.

Application reference: UV tester, UV lamp monitoring, sterilization lamp equipment, etc.

2.Parameter Specification

Parameter	Value/Representation
Operating voltage	3.3~5V
Output voltage	0~5V (corresponding to UV index 0~11)
Test accuracy	±1 UV Index
Wavelength of response	200~370nm
Output signal	Analog signal
Operating temperature	-20°C~+85°C
Size	3.2cm*2.4cm

3.Wiring Diagram

Hint

Expansion board is attached to esp32 controller board.

UV Sensor	ESP32
S	39
VCC	5V
GND	GND

4.Sample Code

 1#include <ACB_Ultraviolet.h>//Import UV library
 2
 3ACB_Ultraviolet uv;
 4
 5void setup() {
 6  Serial.begin(115200);//Set serial port
 7  uv.setpin(39);//Set the pin of the UV sensor
 8}
 9
10void loop() {
11  int uv_Value = uv.read("analogValue");//Uv analog value
12  int uv_level = uv.read("level");//Uv Level
13  Serial.print("uv value: ");
14  Serial.println(uv_Value);
15  Serial.print("uv level: ");
16  Serial.println(uv_level);
17  Serial.println("---------------------");
18  delay(100);
19}
20

5.Test Result

After you successfully connect the line according to the wiring diagram and successfully upload the correct program, when you irradiate the UV sensor with the UV lamp or put the UV sensor in the outdoor sunlight, the serial port monitor will output the current analog value of UV and the corresponding level.

Ultraviolet grade index	Range of UV analog values
0	<372
1	372~743
2	744~1115
3	1116~1487
4	1488~1859
5	1860~2231
6	2232~2603
7	2604~2975
8	2976~3347
9	3348~3719
10	3720~4094
11	>=4095

6.Related Resources

PDF and Code

7.Get One Now

B2B Business: info@acebott.com