diff --git a/include/payload.h b/include/payload.h
index b2d5683f..328c0b4e 100644
--- a/include/payload.h
+++ b/include/payload.h
@@ -61,6 +61,62 @@ public:
   void addTime(time_t value);
   void addPM10(float value);
   void addPM25(float value);
+private:
+  void addChars( char* string, int len);
+
+#if (PAYLOAD_ENCODER == 1) // format plain
+
+private:
+  uint8_t *buffer;
+  uint8_t cursor;
+
+#elif (PAYLOAD_ENCODER == 2) // format packed
+
+private:
+  uint8_t *buffer;
+  uint8_t cursor;
+  void uintToBytes(uint64_t i, uint8_t byteSize);
+  void writeUptime(uint64_t unixtime);
+  void writeLatLng(double latitude, double longitude);
+  void writeUint64(uint64_t i);
+  void writeUint32(uint32_t i);
+  void writeUint16(uint16_t i);
+  void writeUint8(uint8_t i);
+  void writeFloat(float value);
+  void writeUFloat(float value);
+  void writePressure(float value);
+  void writeVersion(char *version);
+  void writeBitmap(bool a, bool b, bool c, bool d, bool e, bool f, bool g,
+                   bool h);
+
+#elif ((PAYLOAD_ENCODER == 3) || (PAYLOAD_ENCODER == 4)) // format cayenne lpp
+
+private:
+  uint8_t *buffer;
+  uint8_t maxsize;
+  uint8_t cursor;
+
+#else
+#error No valid payload converter defined!
+#endif
+};
+
+extern PayloadConvert payload;
+
+#endif // _PAYLOAD_H_
+  void addCount(uint16_t value, uint8_t sniffytpe);
+  void addConfig(configData_t value);
+  void addStatus(uint16_t voltage, uint64_t uptime, float cputemp, uint32_t mem,
+                 uint8_t reset1, uint8_t reset2);
+  void addAlarm(int8_t rssi, uint8_t message);
+  void addVoltage(uint16_t value);
+  void addGPS(gpsStatus_t value);
+  void addBME(bmeStatus_t value);
+  void addButton(uint8_t value);
+  void addSensor(uint8_t[]);
+  void addTime(time_t value);
+  void addPM10(float value);
+  void addPM25(float value);
   void addChars( char* string, int len);
 
 #if (PAYLOAD_ENCODER == 1) // format plain