 }
 void pressures(){//read and average pressure values
   int junk = analogRead(feedppin);
-  feedp = analogRead(feedppin)*.21-16.5;
+  feedp = analogRead(feedppin)*.7-54;
   sfeedp = (sfeedp+feedp)/2;
 }

   Serial.begin(9600);
   attachInterrupt(0, dropcount_fun, RISING);  //pin 2 tr reciever
   pinMode(feedppin,INPUT);//pin A0
   drop_num = 5;
   dropcount = 0;
   dropcount2 = 0;
   strokerate = 118;
   lowflowtime = 0;

  Serial.print("Time");Serial.print("\t");
  Serial.print("PSI");Serial.print("\t");
  Serial.print("Drops");Serial.print("\t");
  Serial.print("Vol mL");Serial.print("\t");
  Serial.println("flowrate mL/min");
}  

