La Crosse TX23

Other Hardware Sensors
4

I also bought a TX23 last friday. And had some time yesterday. But I think the communication is a little bit different then the TX20.

For the wind speed readings you will need a extra pause/ delay of appr. 2000mS.
I connected the DTR pin to a digital input and simply send a HIGH and LOW every 2000mS, does the trick.

The wind speed is a 12 bit value. You need to invert and endianness swap this bits.
The bit represents a value in units of 0.1 metre/sec. The 3 MSBs always are 000 so only 9 bits are used.
This value is max. 511 and with a simple calculation you get 51.1 meter per second or 183.96 km/h

This is the source from the updated version, this will light up a LED or in my example 8 old fashioned lightbulbs via a FETs.
Still needs some tweaking, and microdelay seems to be a problem, had this problem before a already had a work-a-round (see source)

Youtube: La crosse TX 23 Arduino UNO 8 PWM lightbulbs FETS - YouTube

#include <SoftPWM.h>

void setup();
void delay2(unsigned long ms);
void loop();
int collectdata(void);
void showdatasimple();
int dataPin = 12;
int bitlenght = -1;
char data[43];
String Wind_Direction;

uint8_t lightbulbs[8] = {2, 3, 4, 5, 6, 7, 8, 9};

void setup() {
  Serial.begin(9600);
  Serial.print("\n\nInitializing...\n");
  Serial.print("Data Pin: ");
  Serial.println(digitalRead(dataPin));
  pinMode(dataPin, INPUT);
  
  // Initialize  
  SoftPWMBegin();  
  
  for (int i = 0; i < 8; i++) 
    SoftPWMSet(lightbulbs[i], 0);
  
  SoftPWMSetFadeTime(ALL, 500, 500);
  
}

void delay2(unsigned long ms){
	unsigned long start = micros();
	while (micros() - start <= ms);
}

void loop() {
  collectdata();
}


int collectdata(void){
   if (bitlenght <0){
      bitlenght = 1230;//getbitlenght2() 1230;
   }
  
  pinMode(dataPin, OUTPUT);
  digitalWrite(dataPin, HIGH);
  delay(100);
  
  digitalWrite(dataPin, LOW );
  delay(500);
  
  pinMode(dataPin, INPUT);


  while(digitalRead(dataPin) == LOW){
  }  
  while(digitalRead(dataPin) == HIGH){
  }
  while(digitalRead(dataPin) == LOW){
  }

  for (int i=0 ; i<42 ; i++){

    data[i] = (digitalRead(dataPin) == LOW)? 48 : 49 ;
    delay2(bitlenght);
  }

  showdatasimple();
  return 0;
}

void showdatasimple(){
  Serial.println("");
  
  String Wind_Dir_PatternStr = "b";
  String Wind_Dir_DescStr = "";
  for (int i =8 ; i> 4 ; i--){
    Wind_Dir_PatternStr += ((data[i] == 48)? 0 : 1);
  }

  Serial.print(Wind_Dir_PatternStr);
  Serial.print(" = ");
  
  if (Wind_Dir_PatternStr == "b0000") { Wind_Dir_DescStr="N"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[0], 255); }
  if (Wind_Dir_PatternStr == "b0001") { Wind_Dir_DescStr="NNO"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[0], 255); }
  if (Wind_Dir_PatternStr == "b0010") { Wind_Dir_DescStr="NO"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[1], 255); }
  if (Wind_Dir_PatternStr == "b0011") { Wind_Dir_DescStr="ONO"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[2], 255);}
  if (Wind_Dir_PatternStr == "b0100") { Wind_Dir_DescStr="O"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[2], 255);}
  if (Wind_Dir_PatternStr == "b0101") { Wind_Dir_DescStr="OZO"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[2], 255);}
  if (Wind_Dir_PatternStr == "b0110") { Wind_Dir_DescStr="ZO"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[3], 255);}
  if (Wind_Dir_PatternStr == "b0111") { Wind_Dir_DescStr="ZZO"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[4], 255);}
  if (Wind_Dir_PatternStr == "b1000") { Wind_Dir_DescStr="Z"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[4], 255);}
  if (Wind_Dir_PatternStr == "b1001") { Wind_Dir_DescStr="ZZW"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[4], 255);}
  if (Wind_Dir_PatternStr == "b1010") { Wind_Dir_DescStr="ZW"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[5], 255);}
  if (Wind_Dir_PatternStr == "b1011") { Wind_Dir_DescStr="WZW"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[6], 255);}
  if (Wind_Dir_PatternStr == "b1100") { Wind_Dir_DescStr="W"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[6], 255);}
  if (Wind_Dir_PatternStr == "b1101") { Wind_Dir_DescStr="WNW"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[6], 255);}
  if (Wind_Dir_PatternStr == "b1110") { Wind_Dir_DescStr="NW"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[7], 255);}
  if (Wind_Dir_PatternStr == "b1111") { Wind_Dir_DescStr="NNW"; SoftPWMSet(ALL, 0); SoftPWMSet(lightbulbs[0], 255);}

  Serial.println(Wind_Dir_DescStr); 
  

  Serial.println("");

//HEAD
  for (int i =0 ; i< 5 ; i++){
    Serial.print( ((data[i] == 48)? 0 : 1) );
  }
  
  Serial.print(" ");
  
//WINDDIR
  for (int i =8 ; i> 4 ; i--){
    Serial.print( ((data[i] == 48)? 0 : 1) );
  }
  

  
  Serial.print(" ");
  
//WIND SPEED
  for (int i =17 ; i> 8 ; i--){
    Serial.print( ((data[i] == 48)? 0 : 1) );
  }
  
  Serial.print(" ");
  
//WIND SPEED+3
  for (int i =20 ; i> 17 ; i--){
    Serial.print( ((data[i] == 48)? 0 : 1) );
  }  
  
  Serial.print(" ");
  
  //CC
  for (int i =24 ; i> 20 ; i--){
    Serial.print( ((data[i] == 48)? 0 : 1) );
  }
  
  Serial.print(" ");
  
  //WIND DIR  NEGATEIVE
  for (int i =28 ; i> 24 ; i--){
    Serial.print( ((data[i] == 48)? 0 : 1) );
  }
  
    Serial.print(" ");
  
  //WIND SPEED NEGATIVE
  for (int i =37 ; i> 28 ; i--){
    Serial.print( ((data[i] == 48)? 0 : 1) );
  }
   
   Serial.print(" ");
    
    //WIND SPEED NEGATIVE+3
  for (int i =40 ; i> 37 ; i--){
    Serial.print( ((data[i] == 48)? 0 : 1) );
  }
}