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diff --git a/libs/TinyGPSPlus.zip b/libs/TinyGPSPlus.zip
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diff --git a/libs/arduino-lmic.zip b/libs/arduino-lmic.zip
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diff --git a/libs/esp8266-oled-ssd1306.zip b/libs/esp8266-oled-ssd1306.zip
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diff --git a/thethingsnetwork/decoder.txt b/thethingsnetwork/decoder.txt
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+++ b/thethingsnetwork/decoder.txt
@@ -0,0 +1,20 @@
+function Decoder(bytes, port) {
+    var decoded = {};
+
+    decoded.latitude = ((bytes[0]<<16)>>>0) + ((bytes[1]<<8)>>>0) + bytes[2];
+    decoded.latitude = (decoded.latitude / 16777215.0 * 180) - 90;
+
+    decoded.longitude = ((bytes[3]<<16)>>>0) + ((bytes[4]<<8)>>>0) + bytes[5];
+    decoded.longitude = (decoded.longitude / 16777215.0 * 360) - 180;
+
+    var altValue = ((bytes[6]<<8)>>>0) + bytes[7];
+    var sign = bytes[6] & (1 << 7);
+    if(sign) decoded.altitude = 0xFFFF0000 | altValue;
+    else decoded.altitude = altValue;
+
+    decoded.hdop = bytes[8] / 10.0;
+    decoded.sats = bytes[9];
+
+    return decoded;
+}
+