Hi all, I have question for some problems.
I am trying to recieve climate controller data with TSOP1838 38 KHz IR.
for example, When I push the temp+ button I am recieving always different Raw codes. is it normally? I read somewhere this is normally. after that, I try to send these raw codes to climate with IR Lcd modul. But the climate does not get to my send data.
this is my breadboard
What could I be doing wrong? Can you help me about it?
Depends. Can you post the raw data received?
Also, what kind of ir led module. Did you check with camera that it's illuminating when you try to send?
as you see on I shared picture, I use 5mm IR Led for send to data... But I am not sure breadboard connection is correct. also I am not sure for the receive raw data from climate controller. because, when I press a button, I see more than one message on serial monitor. I think all data does not came same time.
for example
#define RAW_DATA_LEN 60
uint16_t rawData[RAW_DATA_LEN]={
3206, 9798, 518, 1566, 542, 494, 514, 518,
534, 498, 518, 1530, 518, 542, 518, 522,
518, 498, 518, 542, 514, 502, 514, 542,
518, 514, 494, 1582, 490, 542, 514, 526,
494, 550, 490, 1566, 514, 542, 494, 1570,
518, 526, 542, 514, 490, 542, 494, 550,
490, 542, 490, 554, 490, 522, 518, 1598,
490, 534, 514, 1000};
Do a cut-and-paste of the following lines into the
designated location in rawSend.ino
#define RAW_DATA_LEN 2
uint16_t rawData[RAW_DATA_LEN]={
34, 1000};
Maybe long pause is separating them... Try with this, ir receiver to arduino pin2.
/*
Connections:
IR Receiver Arduino
V+ -> +5v
GND -> GND
Signal Out -> Digital Pin 2
(If using a 3V Arduino, you may connect V+ to +3V)
*/
#define LEDPIN 13
//you may increase this value on Arduinos with greater than 2k SRAM
#define maxLen 800
volatile unsigned int irBuffer[maxLen]; //stores timings - volatile because changed by ISR
volatile unsigned int x = 0; //Pointer thru irBuffer - volatile because changed by ISR
void setup() {
Serial.begin(115200); //change BAUD rate as required
attachInterrupt(0, rxIR_Interrupt_Handler, CHANGE);//set up ISR for receiving IR signal
}
void loop() {
// put your main code here, to run repeatedly:
Serial.println(F("Press the button on the remote now - once only"));
delay(5000); // pause 5 secs
if (x) { //if a signal is captured
digitalWrite(LEDPIN, HIGH);//visual indicator that signal received
Serial.println();
Serial.print(F("Raw: (")); //dump raw header format - for library
Serial.print((x - 1));
Serial.print(F(") "));
detachInterrupt(0);//stop interrupts & capture until finshed here
for (int i = 1; i < x; i++) { //now dump the times
if (!(i & 0x1)) Serial.print(F("-"));
Serial.print(irBuffer[i] - irBuffer[i - 1]);
Serial.print(F(", "));
}
x = 0;
Serial.println();
Serial.println();
digitalWrite(LEDPIN, LOW);//end of visual indicator, for this time
attachInterrupt(0, rxIR_Interrupt_Handler, CHANGE);//re-enable ISR for receiving IR signal
}
}
void rxIR_Interrupt_Handler() {
if (x > maxLen) return; //ignore if irBuffer is already full
irBuffer[x++] = micros(); //just continually record the time-stamp of signal transitions
}
Also, what led it is? Is it 940nm ? From where?
Press the button on the remote now - once only
Press the button on the remote now - once only
Press the button on the remote now - once only
Press the button on the remote now - once only
it does not recieve anything. I use to TSOP1838 38 KHz IR for recieving. Does it matter?
TSOP is good.
Did you wire it to Arduino pin 2?
Yes
And you didn't edit the code anyhow, right?
Then you have loose wire.
No I did not edit code. I just change pin. I do not think so. because I see the raw with another code.
/* rawR&cv.ino Example sketch for IRLib2
* Illustrate how to capture raw timing values for an unknow protocol.
* You will capture a signal using this sketch. It will output data the
* serial monitor that you can cut and paste into the "rawSend.ino"
* sketch.
*/
// Recommend only use IRLibRecvPCI or IRLibRecvLoop for best results
#include <IRLibRecvPCI.h>
IRrecvPCI myReceiver(2);//pin number for the receiver
void setup() {
Serial.begin(115200);
delay(2000); while (!Serial); //delay for Leonardo
myReceiver.enableIRIn(); // Start the receiver
Serial.println(F("Ready to receive IR signals"));
myReceiver.setFrameTimeout(100000);
}
void loop() {
//Continue looping until you get a complete signal received
if (myReceiver.getResults()) {
Serial.println(F("Do a cut-and-paste of the following lines into the "));
Serial.println(F("designated location in rawSend.ino"));
Serial.print(F("\n#define RAW_DATA_LEN "));
Serial.println(recvGlobal.recvLength,DEC);
Serial.print(F("uint16_t rawData[RAW_DATA_LEN]={\n\t"));
for(bufIndex_t i=1;i<recvGlobal.recvLength;i++) {
Serial.print(recvGlobal.recvBuffer[i],DEC);
Serial.print(F(", "));
if( (i % 8)==0) Serial.print(F("\n\t"));
}
Serial.println(F("1000};"));//Add arbitrary trailing space
myReceiver.enableIRIn(); //Restart receiver
}
}
Receiver pin is hardcoded to 2
did you modify this line:
You shouldn't . It's not for receiver.
No, I didn't 
Weird, that same code was working for me and for another person here two days ago...
Anyway, go back to your precedent code if it's working then...
You could try to raise that FrameTimeout to see if it can catch those two pieces together.
I keep getting messages. It's like it's coming from other lights around me. When I cover the receiver, the message doesn't come.
With which code?
Bad connection on breadboard and jumper wires?
Also strong natural/artificial light can cause some noise.
same with both codes. I have a monitor right next to my card. I really don't know. I can't understand why not.
I would clean your wiring...
Looks valid signal. But you should receive it equally in raw.
Just fix your wires, so situation doesn't change every time you touch your board.
I see what looks to be a DHT22 Temperature/Humidity sensor and an Arduino Uno. This is where a schematic would be a big improvement over a picture of a birds nest of wiring. Why exactly are you using IR?
Ron
