I tried to upload this sketch it contains vibration detector with other different detectors, but I have this problem that I don't understand in the void loop section of the vibration sketch

[anon73444976]

@younes_bgd

long vibration(){
long measurement=pulseIn(vs,HIGH); //wait for the pin to get HIGH and returns measurement
return measurement;

// Wait a few seconds between measurements.
delay(2000);

It makes no sense to have code after a return.