// lipon arxikopoio kai orizw tn metavliti mou stn arxi... fenete pantou
uint16_t lux = 0;

//meta mesa stn main kalo tin sinartisi
  Lux();

// kai meta edw pera paw kai ftiaxnw to megalo string xrisimopoiontas to lux to mikro pou exei parei timi mesa stn Lux me kefaleo... kala den to exw kanei?

  gprsdata = "st1*1234*A00*" + mystamp + String(Mtemp,1) + "*"+ String(humtemp(1)) + "*"+ String(presstemp(1),2) + "*"+ String(lux) + "*" + String(vspeed) + "*" + String(sV,1);// + "*" + String(com);


void Lux() {
  lightMeter.begin(BH1750::CONTINUOUS_HIGH_RES_MODE);
  delay(120);
  lux = lightMeter.readLightLevel();
}