 }
 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;
 }

     timeold = millis();
     totaldrops = totaldropsold + dropcount;
     totaldropsold = totaldrops;
     totalvol = totaldrops * dropsize; //reports in L
     flowrate = dropcount * dropsize / time_int * 1000 * 60; //report in mL per min
     flowratehigh = flowtarget * 1.03;
     flowratelow = flowtarget * 0.97;

   totalvol = 0;
   
   //make sure this is correct!
   dropsize = 0.017;//how to find this
   //make sure this is correct!

   flowrate = 0;
