how can i generate 56khz square wave pulse

Projects Programming
1

I am working on a project in my class, i worked on every other hardware components of my project. I am stuck in trying to generate 56kHz pulse for IR transmission purpose. I have an IR reciever at the other end of my cuircuir which is set up to turn a relay on/off when detecting 56KHZ pulse.
I dont know know to program arduino, to output 56khz at one pin... so that i will connect IR LED and send the signal.
Can you guys please show me or give me an example

2

Probably the easiest way is to use tone(). I've used it to create a 38kHz IR carrier.

3

How would i be using tone() to generate that?

4

tone(pin, frequency)
tone(pin, frequency, duration)

5

(deleted)

6

I hate it when my google gets broken :confused:

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7

Try the IRremote or IRLib libraries...

....or if you want to generate the 56kHz directly try the TimerOne library.