Ir reciever - No input

Other Hardware Sensors
1

Hello to all

I justwanted to do a project with arduino. I bought an Ir reciever TSOP 1738
Hooked it up like this...

I used the inbuilt LEd...

But for some reason Ir reciever is not recieving any signals. I tried with two of my remotes. I used IRremote library.

I had a doubt whether my Ir reciever was working...

So I just used examples -> Basic -> DigitalReadSerial program with pin 11 as input...

I was surprised to see a HIGH signal which indicates reciever is working fine.

Any help ??? I dunno what to do...

2

Are you pulsing that IR LED at 38kHz? If not, the TSOP output will remain high. It's active low, so will only go low when it sees a 38kHz pulse.

3

JimboZA:
Are you pulsing that IR LED at 38kHz? If not, the TSOP output will remain high. It's active low, so will only go low when it sees a 38kHz pulse.

Hello... Thanks for the reply... Yes the output is constantly high. It is not going to low when I press any button from remote...

I also used the program examples -> Basic -> ReadAnalogvoltage and i recieved a constant 5 volt using the pin A0...

Thanks

4

You sure your remote's 38k?

5

JimboZA:
You sure your remote's 38k?

No... I am not sure... How to check that ??? I am really a noob to this programming...
Anywaz it should show some fuctuation in voltage... Rite ???

6

If you indeed have a tsop1738, the drawing you have is not matching up with the data sheet for the decoder.
http://www.micropik.com/PDF/tsop17xx.pdf

7

LarryD:
If you indeed have a tsop1738 the drawing you have is not matching up with the data sheet for the decider.
http://www.micropik.com/PDF/tsop17xx.pdf

No different provider provide different settings... So i checked manually using the serialreadvoltage program as which connection gives 5v output... Because TSOP is always HIGH till it recieves a IR signal...

8

I do not understand what you just said, can you rephrase?

Show us a image of your wireing.

9

LarryD:
I do not understand what you just said, can you rephrase?

Show us a image of your wireing.

my wiring is exactly same as the image...

When the circuit is correctly connected Tsop always gives a 5v output always... till it recieves a ir signal

10

I hooked up a TSOP1738 with the wiring shown in the data sheet and it works just fine.
Basic -> DigitalReadSerial will flash a LED if you attach one to an output pin.

Try: digitalWrite(13, digitalRead(11)); // LED on 13 which is an output.

You really should look at using:

or something similar

11

The TSOP1738 is:

GND +5V Output

As shown on the Data Sheet

==================================
( Edit: It is Not, Output GND +5 as you have it )
( you may have damaged your decoder )

.

12

Try:

void setup(void) 
{
  pinMode(11, INPUT);
  pinMode(13, OUTPUT);
} 

void loop(void) 
{
  digitalWrite(13, digitalRead(11));
}
13

LarryD:
Try:

void setup(void)

{
  pinMode(11, INPUT);
  pinMode(13, OUTPUT);
}

void loop(void)
{
  digitalWrite(13, digitalRead(11));
}

I tried this code with GND +5V Output... But Led was off...

i tried it with out GND +5v... Led was ON...

14

The led will normally be ON and flash very fast when you push the button.

You may have damaged your TSOP1738 by wiring it up wrong.

Show us a link where you bought the decoder/detector.

Show us your wiring, attach an image of it.

.

15

LarryD:
The led will normally be ON and flash very fast when you push the button.

You may have damaged your TSOP1738 by wiring it up wrong.

Show us a link where you bought the decoder/detector.

Show us your wiring, attach an image of it.

.

Thanks for the reply buddy... Yes that Ir reciever was not working properly. I bought one Ir reciever module online and now it works like a charm... :slight_smile: