diff --git a/README.md b/README.md
index 255fe26c..b66a98aa 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # ESP32-Paxcounter
 **Wifi & Bluetooth driven, LoRaWAN enabled, battery powered mini Paxcounter built on cheap ESP32 LoRa IoT boards**
 
---> see development branch of this repository for latest alpha version <--
+Tutorial (in german language): https://www.heise.de/select/make/2019/1/1551099236518668
 
 <img src="img/Paxcounter-title.jpg">
 <img src="img/Paxcounter-ttgo.jpg">
@@ -396,3 +396,4 @@ Thanks to
 - [Charles Hallard](https://github.com/hallard) for major code contributions to this project
 - [robbi5](https://github.com/robbi5) for the payload converter
 - [terrillmoore](https://github.com/mcci-catena) for maintaining the LMIC for arduino LoRaWAN stack
+- [sbamueller](https://github.com/sbamueller) for writing the tutorial in Make Magazine
diff --git a/src/TTN/plain_decoder.js b/src/TTN/plain_decoder.js
index ec55dc2c..ca43a5e4 100644
--- a/src/TTN/plain_decoder.js
+++ b/src/TTN/plain_decoder.js
@@ -10,7 +10,7 @@ function Decoder(bytes, port) {
     if (bytes.length >= 2) {
     decoded.wifi = (bytes[i++] << 8) | bytes[i++];}
     
-    if (bytes.length >= 4) {
+    if (bytes.length === 4 || bytes.length > 15) {
     decoded.ble = (bytes[i++] << 8) | bytes[i++];}
 
     if (bytes.length > 4) {
@@ -60,7 +60,13 @@ function Decoder(bytes, port) {
     decoded.humidity = ((bytes[i++] << 8) | bytes[i++]);
     decoded.air = ((bytes[i++] << 8) | bytes[i++]);
   }
+  
+  if (port === 8) {
+    var i = 0;
+    if (bytes.length >= 2) {
+    decoded.battery = (bytes[i++] << 8) | bytes[i++];}
+  }
 
   return decoded;
 
-}
\ No newline at end of file
+}
diff --git a/src/hal/ttgobeam.h b/src/hal/ttgobeam.h
index d4d1730e..a572260d 100644
--- a/src/hal/ttgobeam.h
+++ b/src/hal/ttgobeam.h
@@ -23,7 +23,7 @@
 // GPS settings
 #define HAS_GPS 1 // use on board GPS
 #define GPS_SERIAL 9600, SERIAL_8N1, GPIO_NUM_12, GPIO_NUM_15 // UBlox NEO 6M
-#define GPS_INT GPIO_NUM_34 // 30ns accurary timepulse, to be external wired on pcb: NEO 6M Pin#3 -> GPIO34
+//#define GPS_INT GPIO_NUM_34 // 30ns accurary timepulse, to be external wired on pcb: NEO 6M Pin#3 -> GPIO34
 
 // Settings for on board DS3231 RTC chip
 //#define HAS_RTC MY_OLED_SDA, MY_OLED_SCL // SDA, SCL
@@ -52,4 +52,4 @@
 
 //#define DISABLE_BROWNOUT 1 // comment out if you want to keep brownout feature
 
-#endif
\ No newline at end of file
+#endif