Data Sheet

VMA328
V. 01 – 23/03/2018 3 ©Velleman nv
5. Overview
VMA328
Extend your light-sensing spectrum with this analogue UV sensor module. It uses a UV photodiode, which can
detect the 240-370 nm range of light (which covers UVB and most of UVA spectrum). The signal level from
the photodiode is very small, in the nano-ampere level, so we tossed on an opamp to amplify the signal to a
more manageable volt-level.
operating voltage: 3.3 V to 5 V
output voltage: 0 V to 1 V (0-10 UV index)
response time: 0.5 s
accuracy: +/- 1 UV Index
radiation wavelength: 200-370 nm
operating temperature: -20 °C to +85 °C
current consumption: 5 mA
dimensions: 24 x 15 mm
6. Connection
Connection.
Vcc======5V
Gnd======Gnd
S======A0
7. Example 1
// CODE BEGIN
void setup() {
// initialize serial communication at 9600 bits per second:
Serial.begin(9600);
// set the analog pin as input
pinMode(A0, INPUT);
}
// the loop routine runs over and over again forever:
void loop()
{
// read the input on analog pin 0:
int sensorValue = analogRead(A0);
// print out the value you read:
Serial.println(sensorValue);
delay(300); // delay in between reads for stability
}
// CODE END