Send IR signal

[Jintu]

excuse me if i am wrong, when i did some research on the format of IR codes, it looks like it is in HEXADECIMAL format. how can i output it from NI usb 6008?

[RavensFan]

hexadecimal is just another way to format binary codes with  2 characters as opposed to 8 1's or 0's.

[Jintu]

Okay. So how do i output this binary data? Just by giving output high and low and delay in between? Please give me a solution. I am not so good at this.

[mikeporter]

Yes, that is exactly how to do it.

Mike...

[Jintu]

is it possible to do with pwm?

[mikeporter]

This will work with anything that uses a series of digital on an off states. But I thought you were controlling a fan?

Mike...

[Jintu]

I am. The device that i control is a fan. Do you have an example code to send this kind of data?

[mikeporter]

No, but I have already told you how to proceed.

Mike...

[Jintu]

I am still thinking of a way to make it work. But i have another concern? How do i modulate the IR signal at 38 KHz in labview?

[RavensFan]

You won't be able to do that within LabVIEW.

USB-6008 has software timed digital I/O.  No way you can guaranteed the changing of a digital output at 38,000 times/second with software.

You need a DAQ device that has hardware timed digital outputs.  You' then set its clock for 38 kHz and would write a digital waveform for its digital output channel.