UV-C sensor breakout board

The light spectrum, from visible light out to the far ultraviolet.

#include “MCP3221.h”
const byte DEV_ADDR = 0x4F; // I2C address of the MCP3221
unsigned long timeNow;
MCP3221 mcp3221(DEV_ADDR);
void setup() {
Serial.begin(9600);
Wire.begin();
Serial.print(F(“

serial is open

”));
// sets voltage reference for the ADC in mV (change as needed)
mcp3221.setVref(4096);
// sets voltage input type to be measured (change as needed)
mcp3221.setVinput(VOLTAGE_INPUT_5V);
// sets exact value of the voltage divider’s Resistor 1 for 12V readings
mcp3221.setRes1(0);
// sets exact value of the voltage divider’s Resistor 2 for 12V readings
mcp3221.setRes2(0);
// sets the Alpha value used by the EMAVG smoothing method
mcp3221.setAlpha(178);
timeNow = millis();
}
void loop()
{
long valore;
float UVC;
if (millis() – timeNow >= 600) {
Serial.print(F(“Valore: “));
valore = mcp3221.getVoltage();
Serial.print(valore);
Serial.print(F(“mV”));
UVC = valore / 0.71;
UVC = UVC/1000;
Serial.print(F(“ – UVC: “));
Serial.print(UVC);
Serial.print(F(“mW/cm2
”));
timeNow = millis();
}
}