diff --git a/main.py b/main.py
index a914ccb..7891056 100644
--- a/main.py
+++ b/main.py
@@ -29,24 +29,34 @@ def on_connect_ot(client, userdata, flags, rc):
     logging.info("connected to ot %s - %s", DST_MQTT_HOST, str(rc))
 
 def on_publish_ot(client, userdata, rc):
-    logging.info("published data to ot - %s", str(rc))
+    logging.info("published data to ot")
+
+def on_log(client, userdata, level, buf):
+    logging_level = mqtt.LOGGING_LEVEL[level]
+    logging.log(logging_level, buf)
+    logging.info("got a log message for %s level %s: %s", str(userdata), level, str(buf))
 
 # The callback for when a PUBLISH message is received from the server.
 def on_message_ttn(client, userdata, msg):
     data = json.loads(msg.payload)
     logging.info("message from ttn received for %s - #%s", data["dev_id"], data["counter"])
-    #logging.info("received via gw %s", data["gateways"][0]["gtw_id"])
+    logging.info("received via gw %s", data["metadata"]["gateways"][0]["gtw_id"])
+
+    if "latitude" in data["payload_fields"]:
+
+        # max is 4 volts, 3 volts is considered empty
+        batpercent = round((data["payload_fields"]["batV"] - 3) * 100)
 
-    if data["payload_fields"]["latitude"]:
         # transform received data into OwnTracks format
         ot_data = json.dumps({
             "_type": "location",
             "lat": data["payload_fields"]["latitude"],
             "lon": data["payload_fields"]["longitude"],
-            "batt": data["payload_fields"]["batV"],
+            "batt": batpercent,
             "t": "p",
             "tid": OT_TID,
             "tst": int(datetime.timestamp(datetime.now())),
+            "conn": "m",
         })
 
         # publish to owntracks
@@ -69,12 +79,14 @@ def on_message_ttn(client, userdata, msg):
                     "lat": data["payload_fields"]["latitude"],
                     "lon": data["payload_fields"]["longitude"],
                     "alarm": int(data["payload_fields"]["alarm"]),
+                    "counter": data["counter"],
+                    "airtime": data["metadata"]["airtime"],
                 }
             }
         ] 
         )
     else:
-        logging.info("no GPS data present")
+        logging.info("no GPS data present - skipping")
 
     logging.info("data processing done")
 
@@ -97,15 +109,19 @@ influxdb = InfluxDBClient(
 
 # Prepare MQTT
 client_ttn = mqtt.Client()
+client_ttn.enable_logger()
 client_ttn.on_connect = on_connect_ttn
 client_ttn.on_message = on_message_ttn
+client_ttn.on_log = on_log
 client_ttn.username_pw_set(SRC_MQTT_USER,SRC_MQTT_PASS)
 client_ttn.tls_set()
 client_ttn.connect(SRC_MQTT_HOST, 8883, 60)
 
 client_ot = mqtt.Client()
+client_ot.enable_logger()
 client_ot.on_connect = on_connect_ot
 client_ot.on_publish = on_publish_ot
+client_ot.on_log = on_log
 client_ot.username_pw_set(DST_MQTT_USER,DST_MQTT_PASS)
 client_ot.tls_set()
 client_ot.connect(DST_MQTT_HOST, 8883, 60)