IR communication between 2 arduino's

Using Arduino Programming Questions
#1

Dear forum members

Im really struggling at the moment, for a project i need to “connect” to Arduino’s to each other with an IR connection.

It comes down to this:
Moisture sensor gives a value.
That value needs to start one of 5 if statements with an iR code.
The second Arduino needs to recognize the iR code and make text appear on the LCD.

The problem is in the connection part, i tried using existing sony IR commands, with an if statement on the second Arduino, but no luck so far.
I would really like some tips.

The code I have so far:

#include <IRremote.h>
IRsend irsend;

int mostureSensor = 0;

void setup() {
  Serial.begin(9600);
}
void loop() {
  int sensorValue = analogRead(mostureSensor);
  Serial.println(sensorValue);
  
 if (sensorValue >= 820)
 { irsend;
//Really Dry
}
else if (sensorValue >= 615  && sensorValue < 820)
 { irsend.sendSony(0xa90, 12);
//Dry
}  
else if (sensorValue >= 410 && sensorValue < 615)
 { irsend.sendSony(0x9746d, 20);
//good
}    
else if (sensorValue >= 250 && sensorValue < 410)
 { 
//Wet
}
else if (sensorValue >= 0 && sensorValue < 250)
 { 
//Really Wet
}
  delay(1000);
}

SECOND Arduino CODE:

#include <IRremote.h>
IRsend irsend;
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

const int RECV_PIN = 13;

IRrecv irrecv(RECV_PIN);
void setup() {
  // put your setup code here, to run once:
irrecv.enableIRIn(); 
}

void loop() {
  if(irrecv.decode(&results)) //this checks to see if a code has been received

if (results.value == 0x68B92);{
  lcd.begin(16,2);
  lcd.setCursor(0,0);
  lcd.print("Dry Give Water");
}
   irrecv.resume(); // Receive the next value


}
#2 
if (results.value == 0x68B92)

That's what you're checking for on the receiver, but best as I can tell that's not the same code you are sending from the sender.

In the sending code:

if (sensorValue >= 820)
 { irsend;
//Really Dry
}

Did you lose a set of parenthesis here?

#3

First of all I like to thank you for your time.
If the data from the moisture sensor is higher than 820 (which means really dry) than the arduino needs to send an iR command to the second Arduino so it can recognise and show a text on his LCD.
I kept this one empty,(used to be irsend.sendSony0x68B92) i tried to use SonyIR codes, but it doesn't react to it, i quess a stupid mistake in the code?

#4

This IR Thread may be of interest.

...R

#5