Hallo,
Several month ago, I connected an IR remote control with an IR receiver found in an arduino kit. The setup was very simple, I used the one you can find using the following link: Arduino Infrared Remote Tutorial : 7 Steps - Instructables
However, I lost the receiver and could not remember the specific type I used. So I decided to order 5 pieces of VS1838B, which basically looked the same.
I set up the same circuit, but noticed that I was not able to receive codes on the serial monitor. In addition, the IR receiver was very hot, so I think that it is not working anymore. Now I did what I should have done before building a circuit with the receiver: I had a look at the datasheet (VS1838 datasheet(1/3 Pages) ETC2 | Infrared Receiver Module). I am not sure, but it seems to me that the receiver has to be connected to several additional resistors and capacitors (page 1 of the datasheet). Additionally, VCC, GND and OUTPUT are not the same order compared to the tutorial.
I took a new receiver and set up the circuit from the datasheet. Now the serial monitor outputs randomly Hex-Codes. I do not need to use the remote control. For the resistor >20K, I tried 22 kohms as well as 100 kohms. No difference.
Some further Boundary conditions:
- I use an Arduino Uno
- The code I use is the following:
#include <IRremote.h>
int RECV_PIN = 11;
IRrecv irrecv(RECV_PIN);
decode_results results;
void setup()
{
Serial.begin(9600);
irrecv.enableIRIn(); // Start the receiver
}
void loop()
{
if (irrecv.decode(&results))
{
Serial.println(results.value, HEX);
irrecv.resume(); // Receive the next value
}
}
Additionally, I loaded the IRrecvDump example from the library. It keeps saying that the received codes are unknown. Makes sense, because the HEX codes are probably random noise.
I tried three remote controls: The one of the arduino kit I mentioned and two Samsung TV controls.
If it is of help, I could also make a photograph of my circuit. But perhaps there is something generally wrong with my setup? Do you think that the receivers I ordered are broken? Do I need a special type of remote control? How do I find out if my remote control fits to the receiver? How do I get rid of the noise?
Thanks in advance for your help.