Update arduino voltmeter

arduino voltmeter

@@ -23,5 +23,5 @@ Serial.print("\t V = ");
 Serial.print(Vin);
 Serial.print("\t I = ");
 Serial.print(I);
-delay(2000); //for maintaining the speed of the output in serial moniter
+delay(2000); //for maintaining the speed of the output in serial moniter, in ms 
 }
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