diff --git a/Config.h b/Config.h
index d680bbc..b7ffce4 100644
--- a/Config.h
+++ b/Config.h
@@ -30,6 +30,7 @@
 #define CO2_PURGE_RETRACTION_PERIOD 500
 #define FILL_SENSORS_TIMER_FREQUENCY 100000 // 100ms This value needs to be defined in microseconds.
 #define FILL_SENSORS_TRIGGER 400 // Int between 0 and 1023 used to trigger the fill sensor: operating voltage(5v or 3.3v) / 1024
+#define VARIABLE_FILL_SENSOR_TRIGGER false // Use a potentiometer to adjust trigger value
 
 /**
  * Feature flags
diff --git a/InputConfig.h b/InputConfig.h
index 7631c4f..54dea40 100644
--- a/InputConfig.h
+++ b/InputConfig.h
@@ -30,6 +30,7 @@
 #define BEER_FILL_SENSOR_1 A0
 #define BEER_FILL_SENSOR_2 A1
 #define BEER_FILL_SENSOR_3 A2
+#define BEER_FILL_SENSOR_POT A3
 #define CO2_PURGE_SOL 4
 #define FILL_RAIL_SOL 3
 #define BEER_BELT_SOL 2
diff --git a/OpenBeerFiller.ino b/OpenBeerFiller.ino
index 6633fe2..18929b9 100644
--- a/OpenBeerFiller.ino
+++ b/OpenBeerFiller.ino
@@ -41,6 +41,7 @@ volatile bool fillSensor3Triggered = false;
 bool idleMessageDisplayed = false;
 enum ProgramState {UNDEF,IDLE,START,FILLING,STOP};
 ProgramState currentState = UNDEF;
+int sensorValue;
 
 /**
  * ***************************************************************************
@@ -66,6 +67,7 @@ void setupPins() {
   pinMode(BEER_FILL_SENSOR_1, INPUT);
   pinMode(BEER_FILL_SENSOR_2, INPUT);
   pinMode(BEER_FILL_SENSOR_3, INPUT);
+  pinMode(BEER_FILL_SENSOR_POT, INPUT);
 
   // Start/Stop button.
   pinMode(START_BUTTON, INPUT);
@@ -83,13 +85,18 @@ void setupFillSensorsTimer() {
  * Check if the fill sensors have been triggered.
  */
 void checkFillSensors() {
-  if (FILL_SENSORS_TRIGGER < analogRead(BEER_FILL_SENSOR_1)) {
+  if (VARIABLE_FILL_SENSOR_TRIGGER) {
+    sensorValue = analogRead(BEER_FILL_SENSOR_POT);
+  } else {
+    sensorValue = FILL_SENSORS_TRIGGER;
+  }
+  if (sensorValue < analogRead(BEER_FILL_SENSOR_1)) {
     triggerFullFillSensor1();
   }
-  if (FILL_SENSORS_TRIGGER < analogRead(BEER_FILL_SENSOR_2)) {
+  if (sensorValue < analogRead(BEER_FILL_SENSOR_2)) {
     triggerFullFillSensor2();
   }
-  if (FILL_SENSORS_TRIGGER < analogRead(BEER_FILL_SENSOR_3)) {
+  if (sensorValue < analogRead(BEER_FILL_SENSOR_3)) {
     triggerFullFillSensor3();
   }
 }