diff --git a/humidifier_controller/humidifier_controller.ino b/humidifier_controller/humidifier_controller.ino
index 0d21615..aa20768 100644
--- a/humidifier_controller/humidifier_controller.ino
+++ b/humidifier_controller/humidifier_controller.ino
@@ -72,8 +72,8 @@ void loop()
       Serial.print(humd);
       Serial.print(",");
       Serial.print(temp);
-      //Serial.print(",");
-      //Serial.print(volts);
+      Serial.print(",");
+      Serial.print(digitalRead(PIN_RELAY4));
       //Serial.print(",");
       //Serial.println(volts2);
       Serial.println("");
diff --git a/shroom_controller.py b/shroom_controller.py
index 415f3ee..7226d0e 100644
--- a/shroom_controller.py
+++ b/shroom_controller.py
@@ -136,11 +136,12 @@ try:
     parts = resp.split(b",")
     humidity = float(parts[0])
     temp = float(parts[1])
-    #volts = float(parts[2])
+    volts = float(parts[2])
     #volts2 = float(parts[3])
     #print(parts)
 
     try:
+      humidifier.update(volts)
       controller.update(s, humidity)
 
       if frame_num == 0:
@@ -150,11 +151,12 @@ try:
               "time": int(now*1000),
               "temp": temp,
               "hum": humidity,
-              "hv": 1 if humidifier.on else 0,
+              "hv": volts,
               "hv2": 1 if humidifier.on else 0,
             }
         }
         send_update(update)
+        #print("sending update {}".format(update))
       frame_num = (frame_num + 1) % DECIMATION_RATE
     except Exception as e:
       print("pipe errored out, restarting: ", e)