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Информация по датчикам Oregon Scientific уже была на форуме, здесь лишь все собрано в одно место.

С помощью счетча ниже можно ловить показания датчиков из эфира (частота 433MHz).

Помимо Oregon, реализован разбор показаний еще нескольких других производителей датчиков.

Железо необходимое для проекта, фото -

// Oregon V2 decoder added - Dominique Pierre
// Oregon V3 decoder revisited - Dominique Pierre
// New code to decode OOK signals from weather sensors, etc.
// 2010-04-11 <jcw@equi4.com> <a data-cke-saved-href="http://opensource.org/licenses/mit-license.php" href="http://opensource.org/licenses/mit-license.php" rel="nofollow">http://opensource.org/licenses/mit-license.php</a>
// $Id: ookDecoder.pde 5331 2010-04-17 10:45:17Z jcw $

class DecodeOOK {
protected:
    byte total_bits, bits, flip, state, pos, data[25];

    virtual char decode (word width) =0;
    
public:

    enum { UNKNOWN, T0, T1, T2, T3, OK, DONE };

    DecodeOOK () { resetDecoder(); }

    bool nextPulse (word width) {
        if (state != DONE)
        
            switch (decode(width)) {
                case -1: resetDecoder(); break;
                case 1:  done(); break;
            }
        return isDone();
    }
    
    bool isDone () const { return state == DONE; }

    const byte* getData (byte& count) const {
        count = pos;
        return data; 
    }
    
    void resetDecoder () {
        total_bits = bits = pos = flip = 0;
        state = UNKNOWN;
    }
    
    // add one bit to the packet data buffer
    
    virtual void gotBit (char value) {
        total_bits++;
        byte *ptr = data + pos;
        *ptr = (*ptr >> 1) | (value << 7);

        if (++bits >= 8) {
            bits = 0;
            if (++pos >= sizeof data) {
                resetDecoder();
                return;
            }
        }
        state = OK;
    }
    
    // store a bit using Manchester encoding
    void manchester (char value) {
        flip ^= value; // manchester code, long pulse flips the bit
        gotBit(flip);
    }
    
    // move bits to the front so that all the bits are aligned to the end
    void alignTail (byte max =0) {
        // align bits
        if (bits != 0) {
            data[pos] >>= 8 - bits;
            for (byte i = 0; i < pos; ++i)
                data[i] = (data[i] >> bits) | (data[i+1] << (8 - bits));
            bits = 0;
        }
        // optionally shift bytes down if there are too many of 'em
        if (max > 0 && pos > max) {
            byte n = pos - max;
            pos = max;
            for (byte i = 0; i < pos; ++i)
                data[i] = data[i+n];
        }
    }
    
    void reverseBits () {
        for (byte i = 0; i < pos; ++i) {
            byte b = data[i];
            for (byte j = 0; j < 8; ++j) {
                data[i] = (data[i] << 1) | (b & 1);
                b >>= 1;
            }
        }
    }
    
    void reverseNibbles () {
        for (byte i = 0; i < pos; ++i)
            data[i] = (data[i] << 4) | (data[i] >> 4);
    }
    
    void done () {
        while (bits)
            gotBit(0); // padding
        state = DONE;
    }
};

// 433 MHz decoders


class OregonDecoderV2 : public DecodeOOK {
public:
    OregonDecoderV2() {}
    
    // add one bit to the packet data buffer
    virtual void gotBit (char value) {
        if(!(total_bits & 0x01))
        {
            data[pos] = (data[pos] >> 1) | (value ? 0x80 : 00);
        }
        total_bits++;
        pos = total_bits >> 4;
        if (pos >= sizeof data) {
            resetDecoder();
            return;
        }
        state = OK;
    }
    
    virtual char decode (word width) {
        if (200 <= width && width < 1200) {
            byte w = width >= 700;
            switch (state) {
                case UNKNOWN:
                    if (w != 0) {
                        // Long pulse
                        ++flip;
                    } else if (32 <= flip) {
                        // Short pulse, start bit
                        flip = 0;
                        state = T0;
                    } else {
                      // Reset decoder
                        return -1;
                    }
                    break;
                case OK:
                    if (w == 0) {
                        // Short pulse
                        state = T0;
                    } else {
                        // Long pulse
                        manchester(1);
                    }
                    break;
                case T0:
                    if (w == 0) {
                      // Second short pulse
                        manchester(0);
                    } else {
                        // Reset decoder
                        return -1;
                    }
                    break;
            }
        } else {
            return -1;
        }
        return total_bits == 160 ? 1: 0;
    }
};

class OregonDecoderV3 : public DecodeOOK {
public:
    OregonDecoderV3() {}
    
    // add one bit to the packet data buffer
    virtual void gotBit (char value) {
        data[pos] = (data[pos] >> 1) | (value ? 0x80 : 00);
        total_bits++;
        pos = total_bits >> 3;
        if (pos >= sizeof data) {
            resetDecoder();
            return;
        }
        state = OK;
    }
    
    virtual char decode (word width) {
        if (200 <= width && width < 1200) {
            byte w = width >= 700;
            switch (state) {
                case UNKNOWN:
                    if (w == 0)
                        ++flip;
                    else if (32 <= flip) {
                        flip = 1;
                        manchester(1);
                    } else
                        return -1;
                    break;
                case OK:
                    if (w == 0)
                        state = T0;
                    else
                        manchester(1);
                    break;
                case T0:
                    if (w == 0)
                        manchester(0);
                    else
                        return -1;
                    break;
            }
        } else {
            return -1;
        }
        return  total_bits == 80 ? 1: 0;
    }
};

class CrestaDecoder : public DecodeOOK {
public:
    CrestaDecoder () {}
    
    virtual char decode (word width) {
        if (200 <= width && width < 1300) {
            byte w = width >= 750;
            switch (state) {
                case UNKNOWN:
                    if (w == 1)
                        ++flip;
                    else if (2 <= flip && flip <= 10)
                        state = T0;
                    else
                        return -1;
                    break;
                case OK:
                    if (w == 0)
                        state = T0;
                    else
                        gotBit(1);
                    break;
                case T0:
                    if (w == 0)
                        gotBit(0);
                    else
                        return -1;
                    break;
            }
        } else if (width >= 2500 && pos >= 7) 
            return 1;
        else
            return -1;
        return 0;
    }
};

class KakuDecoder : public DecodeOOK {
public:
    KakuDecoder () {}
    
    virtual char decode (word width) {
        if (180 <= width && width < 450 || 950 <= width && width < 1250) {
            byte w = width >= 700;
            switch (state) {
                case UNKNOWN:
                case OK:
                    if (w == 0)
                        state = T0;
                    else
                        return -1;
                    break;
                case T0:
                    if (w)
                        state = T1;
                    else
                        return -1;
                    break;
                case T1:
                    state += w + 1;
                    break;
                case T2:
                    if (w)
                        gotBit(0);
                    else
                        return -1;
                    break;
                case T3:
                    if (w == 0)
                        gotBit(1);
                    else
                        return -1;
                    break;
            }
        } else if (width >= 2500 && 8 * pos + bits == 12) {
            for (byte i = 0; i < 4; ++i)
                gotBit(0);
            alignTail(2);
            return 1;
        } else
            return -1;
        return 0;
    }
};

class XrfDecoder : public DecodeOOK {
public:
    XrfDecoder () {}
    
    // see also <a data-cke-saved-href="http://davehouston.net/rf.htm" href="http://davehouston.net/rf.htm" rel="nofollow">http://davehouston.net/rf.htm</a>
    virtual char decode (word width) {
        if (width > 2000 && pos >= 4)
            return 1;
        if (width > 5000)
            return -1;
        if (width > 4000 && state == UNKNOWN)
            state = OK;
        else if (350 <= width && width < 1800) {
            byte w = width >= 720;
            switch (state) {
                case OK:
                    if (w == 0)
                        state = T0;
                    else
                        return -1;
                    break;
                case T0:
                    gotBit(w);
                    break;
            }
        } else
            return -1;
        return 0;
    }
};

class HezDecoder : public DecodeOOK {
public:
    HezDecoder () {}
    
    // see also <a data-cke-saved-href="http://homeeasyhacking.wikia.com/wiki/Home_Easy_Hacking_Wiki" href="http://homeeasyhacking.wikia.com/wiki/Home_Easy_Hacking_Wiki" rel="nofollow">http://homeeasyhacking.wikia.com/wiki/Home_Easy_Hacking_Wiki</a>
    virtual char decode (word width) {
        if (200 <= width && width < 1200) {
            byte w = width >= 600;
            gotBit(w);
        } else if (width >= 5000 && pos >= 5 /*&& 8 * pos + bits == 50*/) {
            for (byte i = 0; i < 6; ++i)
                gotBit(0);
            alignTail(7); // keep last 56 bits
            return 1;
        } else
            return -1;
        return 0;
    }
};

// 868 MHz decoders

class VisonicDecoder : public DecodeOOK {
public:
    VisonicDecoder () {}
    
    virtual char decode (word width) {
        if (200 <= width && width < 1000) {
            byte w = width >= 600;
            switch (state) {
                case UNKNOWN:
                case OK:
                    state = w == 0 ? T0 : T1;
                    break;
                case T0:
                    gotBit(!w);
                    if (w)
                        return 0;
                    break;
                case T1:
                    gotBit(!w);
                    if (!w)
                        return 0;
                    break;
            }
            // sync error, flip all the preceding bits to resync
            for (byte i = 0; i <= pos; ++i)
                data[i] ^= 0xFF; 
        } else if (width >= 2500 && 8 * pos + bits >= 36 && state == OK) {
            for (byte i = 0; i < 4; ++i)
                gotBit(0);
            alignTail(5); // keep last 40 bits
            // only report valid packets
            byte b = data[0] ^ data[1] ^ data[2] ^ data[3] ^ data[4];
            if ((b & 0xF) == (b >> 4))
                return 1;
        } else
            return -1;
        return 0;
    }
};

class EMxDecoder : public DecodeOOK {
public:
    EMxDecoder () {}
    
    // see also <a data-cke-saved-href="http://fhz4linux.info/tiki-index.php?page=EM+Protocol" href="http://fhz4linux.info/tiki-index.php?page=EM+Protocol" rel="nofollow">http://fhz4linux.info/tiki-index.php?page=EM+Protocol</a>
    virtual char decode (word width) {
        if (200 <= width && width < 1000) {
            byte w = width >= 600;
            switch (state) {
                case UNKNOWN:
                    if (w == 0)
                        ++flip;
                    else if (flip > 20)
                        state = OK;
                    else
                        return -1;
                    break;
                case OK:
                    if (w == 0)
                        state = T0;
                    else
                        return -1;
                    break;
                case T0:
                    gotBit(w);
                    break;
            }
        } else if (width >= 1500 && pos >= 9)
            return 1;
        else
            return -1;
        return 0;
    }
};

class KSxDecoder : public DecodeOOK {
public:
    KSxDecoder () {}
    
    // see also <a data-cke-saved-href="http://www.dc3yc.homepage.t-online.de/protocol.htm" href="http://www.dc3yc.homepage.t-online.de/protocol.htm" rel="nofollow">http://www.dc3yc.homepage.t-online.de/protocol.htm</a>
    virtual char decode (word width) {
        if (200 <= width && width < 1000) {
            byte w = width >= 600;
            switch (state) {
                case UNKNOWN:
                    gotBit(w);
                    bits = pos = 0;
                    if (data[0] != 0x95)
                        state = UNKNOWN;
                    break;
                case OK:
                    state = w == 0 ? T0 : T1;
                    break;
                case T0:
                    gotBit(1);
                    if (!w)
                        return -1;
                    break;
                case T1:
                    gotBit(0);
                    if (w)
                        return -1;
                    break;
            }
        } else if (width >= 1500 && pos >= 6) 
            return 1;
        else
            return -1;
        return 0;
    }
};

class FSxDecoder : public DecodeOOK {
public:
    FSxDecoder () {}
    
    // see also <a data-cke-saved-href="http://fhz4linux.info/tiki-index.php?page=FS20%20Protocol" href="http://fhz4linux.info/tiki-index.php?page=FS20%20Protocol" rel="nofollow">http://fhz4linux.info/tiki-index.php?page=FS20%20Protocol</a>
    virtual char decode (word width) {
        if (300 <= width && width < 775) {
            byte w = width >= 500;
            switch (state) {
                case UNKNOWN:
                    if (w == 0)
                        ++flip;
                    else if (flip > 20)
                        state = T1;
                    else
                        return -1;
                    break;
                case OK:
                    state = w == 0 ? T0 : T1;
                    break;
                case T0:
                    gotBit(0);
                    if (w)
                        return -1;
                    break;
                case T1:
                    gotBit(1);
                    if (!w)
                        return -1;
                    break;
            }
        } else if (width >= 1500 && pos >= 5)
            return 1;
        else
            return -1;
        return 0;
    }
};

OregonDecoderV2 orscV2;
OregonDecoderV3 orscV3;
CrestaDecoder cres;
KakuDecoder kaku;
XrfDecoder xrf;
HezDecoder hez;
VisonicDecoder viso;
EMxDecoder emx;
KSxDecoder ksx;
FSxDecoder fsx;

#define PORT 2

volatile word pulse;

#if defined(__AVR_ATmega1280__)
void ext_int_1(void) {
#else
ISR(ANALOG_COMP_vect) {
#endif
    static word last;
    // determine the pulse length in microseconds, for either polarity
    pulse = micros() - last;
    last += pulse;
}

void reportSerial (const char* s, class DecodeOOK& decoder) {
    byte pos;
    const byte* data = decoder.getData(pos);
    Serial.print(s);
    Serial.print(' ');
    for (byte i = 0; i < pos; ++i) {
        Serial.print(data[i] >> 4, HEX);
        Serial.print(data[i] & 0x0F, HEX);
    }
    
    // Serial.print(' ');
    // Serial.print(millis() / 1000);
    Serial.println();
    
    decoder.resetDecoder();
}


void setup () {
    Serial.begin(115200);
    Serial.println("\n[ookDecoder]");
    
#if !defined(__AVR_ATmega1280__)
    pinMode(13 + PORT, INPUT);  // use the AIO pin
    digitalWrite(13 + PORT, 1); // enable pull-up

    // use analog comparator to switch at 1.1V bandgap transition
    ACSR = _BV(ACBG) | _BV(ACI) | _BV(ACIE);

    // set ADC mux to the proper port
    ADCSRA &= ~ bit(ADEN);
    ADCSRB |= bit(ACME);
    ADMUX = PORT - 1;
#else
   attachInterrupt(1, ext_int_1, CHANGE);

   DDRE  &= ~_BV(PE5);
   PORTE &= ~_BV(PE5);
#endif
}

void loop () {
    static int i = 0;
    cli();
    word p = pulse;
    
    pulse = 0;
    sei();

    //if (p != 0){ Serial.print(++i); Serial.print('\n');}
    
    if (p != 0) {
        if (orscV2.nextPulse(p))
            reportSerial("OSV2", orscV2);  
        if (orscV3.nextPulse(p))
            reportSerial("OSV3", orscV3);        
        if (cres.nextPulse(p))
            reportSerial("CRES", cres);        
        if (kaku.nextPulse(p))
            reportSerial("KAKU", kaku);        
        if (xrf.nextPulse(p))
            reportSerial("XRF", xrf);        
        if (hez.nextPulse(p))
            reportSerial("HEZ", hez);        
    }

    if (p != 0) {
        if (viso.nextPulse(p))
            reportSerial("VISO", viso);        
        if (emx.nextPulse(p))
            reportSerial("EMX", emx);        
        if (ksx.nextPulse(p))
            reportSerial("KSX", ksx);        
        if (fsx.nextPulse(p))
            reportSerial("FSX", fsx);        
    }
}

Можно соорудить свой датчик например на DHT22 и слать с него данные на погодную станцию в формате Oregon. Подробнее по ссылке в скетче ниже.

/*
 * connectingStuff, Oregon Scientific v2.1 Emitter
 * <a data-cke-saved-href="http://connectingstuff.net/blog/encodage-protocoles-oregon-scientific-sur-arduino/" href="http://connectingstuff.net/blog/encodage-protocoles-oregon-scientific-sur-arduino/" rel="nofollow">http://connectingstuff.net/blog/encodage-protocoles-oregon-scientific-sur-arduino/</a>
 *
 * Copyright (C) 2013 olivier.lebrun@gmail.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/
 
#define THN132N
 
const byte TX_PIN = 4;
 
const unsigned long TIME = 512;
const unsigned long TWOTIME = TIME*2;
 
#define SEND_HIGH() digitalWrite(TX_PIN, HIGH)
#define SEND_LOW() digitalWrite(TX_PIN, LOW)
 
// Buffer for Oregon message
#ifdef THN132N
  byte OregonMessageBuffer[8];
#else
  byte OregonMessageBuffer[9];
#endif
 
/**
 * \brief    Send logical "0" over RF
 * \details  azero bit be represented by an off-to-on transition
 * \         of the RF signal at the middle of a clock period.
 * \         Remenber, the Oregon v2.1 protocol add an inverted bit first
 */
inline void sendZero(void)
{
  SEND_HIGH();
  delayMicroseconds(TIME);
  SEND_LOW();
  delayMicroseconds(TWOTIME);
  SEND_HIGH();
  delayMicroseconds(TIME);
}
 
/**
 * \brief    Send logical "1" over RF
 * \details  a one bit be represented by an on-to-off transition
 * \         of the RF signal at the middle of a clock period.
 * \         Remenber, the Oregon v2.1 protocol add an inverted bit first
 */
inline void sendOne(void)
{
   SEND_LOW();
   delayMicroseconds(TIME);
   SEND_HIGH();
   delayMicroseconds(TWOTIME);
   SEND_LOW();
   delayMicroseconds(TIME);
}
 
/**
* Send a bits quarter (4 bits = MSB from 8 bits value) over RF
*
* @param data Source data to process and sent
*/
 
/**
 * \brief    Send a bits quarter (4 bits = MSB from 8 bits value) over RF
 * \param    data   Data to send
 */
inline void sendQuarterMSB(const byte data)
{
  (bitRead(data, 4)) ? sendOne() : sendZero();
  (bitRead(data, 5)) ? sendOne() : sendZero();
  (bitRead(data, 6)) ? sendOne() : sendZero();
  (bitRead(data, 7)) ? sendOne() : sendZero();
}
 
/**
 * \brief    Send a bits quarter (4 bits = LSB from 8 bits value) over RF
 * \param    data   Data to send
 */
inline void sendQuarterLSB(const byte data)
{
  (bitRead(data, 0)) ? sendOne() : sendZero();
  (bitRead(data, 1)) ? sendOne() : sendZero();
  (bitRead(data, 2)) ? sendOne() : sendZero();
  (bitRead(data, 3)) ? sendOne() : sendZero();
}
 
/******************************************************************/
/******************************************************************/
/******************************************************************/
 
/**
 * \brief    Send a buffer over RF
 * \param    data   Data to send
 * \param    size   size of data to send
 */
void sendData(byte *data, byte size)
{
  for(byte i = 0; i < size; ++i)
  {
    sendQuarterLSB(data[i]);
    sendQuarterMSB(data[i]);
  }
}
 
/**
 * \brief    Send an Oregon message
 * \param    data   The Oregon message
 */
void sendOregon(byte *data, byte size)
{
    sendPreamble();
    //sendSync();
    sendData(data, size);
    sendPostamble();
}
 
/**
 * \brief    Send preamble
 * \details  The preamble consists of 16 "1" bits
 */
inline void sendPreamble(void)
{
  byte PREAMBLE[]={0xFF,0xFF};
  sendData(PREAMBLE, 2);
}
 
/**
 * \brief    Send postamble
 * \details  The postamble consists of 8 "0" bits
 */
inline void sendPostamble(void)
{
#ifdef THN132N
  sendQuarterLSB(0x00);
#else
  byte POSTAMBLE[]={0x00};
  sendData(POSTAMBLE, 1); 
#endif
}
 
/**
 * \brief    Send sync nibble
 * \details  The sync is 0xA. It is not use in this version since the sync nibble
 * \         is include in the Oregon message to send.
 */
inline void sendSync(void)
{
  sendQuarterLSB(0xA);
}
 
/******************************************************************/
/******************************************************************/
/******************************************************************/
 
/**
 * \brief    Set the sensor type
 * \param    data       Oregon message
 * \param    type       Sensor type
 */
inline void setType(byte *data, byte* type)
{
  data[0] = type[0];
  data[1] = type[1];
}
 
/**
 * \brief    Set the sensor channel
 * \param    data       Oregon message
 * \param    channel    Sensor channel (0x10, 0x20, 0x30)
 */
inline void setChannel(byte *data, byte channel)
{
    data[2] = channel;
}
 
/**
 * \brief    Set the sensor ID
 * \param    data       Oregon message
 * \param    ID         Sensor unique ID
 */
inline void setId(byte *data, byte ID)
{
  data[3] = ID;
}
 
/**
 * \brief    Set the sensor battery level
 * \param    data       Oregon message
 * \param    level      Battery level (0 = low, 1 = high)
 */
void setBatteryLevel(byte *data, byte level)
{
  if(!level) data[4] = 0x0C;
  else data[4] = 0x00;
}
 
/**
 * \brief    Set the sensor temperature
 * \param    data       Oregon message
 * \param    temp       the temperature
 */
void setTemperature(byte *data, float temp)
{
  // Set temperature sign
  if(temp < 0)
  {
    data[6] = 0x08;
    temp *= -1; 
  }
  else
  {
    data[6] = 0x00;
  }
 
  // Determine decimal and float part
  int tempInt = (int)temp;
  int td = (int)(tempInt / 10);
  int tf = (int)round((float)((float)tempInt/10 - (float)td) * 10);
 
  int tempFloat =  (int)round((float)(temp - (float)tempInt) * 10);
 
  // Set temperature decimal part
  data[5] = (td << 4);
  data[5] |= tf;
 
  // Set temperature float part
  data[4] |= (tempFloat << 4);
}
 
/**
 * \brief    Set the sensor humidity
 * \param    data       Oregon message
 * \param    hum        the humidity
 */
void setHumidity(byte* data, byte hum)
{
    data[7] = (hum/10);
    data[6] |= (hum - data[7]*10) << 4;
}
 
/**
 * \brief    Sum data for checksum
 * \param    count      number of bit to sum
 * \param    data       Oregon message
 */
int Sum(byte count, const byte* data)
{
  int s = 0;
 
  for(byte i = 0; i<count;i++)
  {
    s += (data[i]&0xF0) >> 4;
    s += (data[i]&0xF);
  }
 
  if(int(count) != count)
    s += (data[count]&0xF0) >> 4;
 
  return s;
}
 
/**
 * \brief    Calculate checksum
 * \param    data       Oregon message
 */
void calculateAndSetChecksum(byte* data)
{
#ifdef THN132N
    int s = ((Sum(6, data) + (data[6]&0xF) - 0xa) & 0xff);
 
    data[6] |=  (s&0x0F) << 4;     data[7] =  (s&0xF0) >> 4;
#else
    data[8] = ((Sum(8, data) - 0xa) & 0xFF);
#endif
}
 
/******************************************************************/
/******************************************************************/
/******************************************************************/
 
void setup()
{
  pinMode(TX_PIN, OUTPUT);
 
  Serial.begin(9600);
  Serial.println("\n[Oregon V2.1 encoder]");
 
  SEND_LOW(); 
 
#ifdef THN132N 
  // Create the Oregon message for a temperature only sensor (TNHN132N)
  byte ID[] = {0xEA,0x4C};
#else
  // Create the Oregon message for a temperature/humidity sensor (THGR2228N)
  byte ID[] = {0x1A,0x2D};
#endif 
 
  setType(OregonMessageBuffer, ID);
  setChannel(OregonMessageBuffer, 0x20);
  setId(OregonMessageBuffer, 0xBB);
}
 
void loop()
{
  // Get Temperature, humidity and battery level from sensors
  // (ie: 1wire DS18B20 for température, ...)
  setBatteryLevel(OregonMessageBuffer, 0); // 0 : low, 1 : high
  setTemperature(OregonMessageBuffer, 11.2);
 
#ifndef THN132N
  // Set Humidity
  setHumidity(OregonMessageBuffer, 52);
#endif 
 
  // Calculate the checksum
  calculateAndSetChecksum(OregonMessageBuffer);
 
  // Show the Oregon Message
  for (byte i = 0; i < sizeof(OregonMessageBuffer); ++i)   {     Serial.print(OregonMessageBuffer[i] >> 4, HEX);
    Serial.print(OregonMessageBuffer[i] & 0x0F, HEX);
  }
 
  // Send the Message over RF
  sendOregon(OregonMessageBuffer, sizeof(OregonMessageBuffer));
  // Send a "pause"
  SEND_LOW();
  delayMicroseconds(TWOTIME*8);
  // Send a copie of the first message. The v2.1 protocol send the
  // message two time
  sendOregon(OregonMessageBuffer, sizeof(OregonMessageBuffer));
 
  // Wait for 30 seconds before send a new message
  SEND_LOW();
  delay(30000);
}