I need to pulse the light.
Yes, the receiver will only respond to modulated IR light.
Pulse, not modulate. As you said, I got the modulation down (tone(8, 38000))
How do I go about doing this
In your very first post, you said:
The IR light is wired from a digital pin toning out at 38kHz
So we thought that you had that covered.
in a way where I can still read for the reflections?
I don't understand that part of the question. What does "read for the reflections" mean?
The light is shooting straight out, and when something is moved in front of the light/sensor combo, the IR light is reflected back to the sensor, so I am looking for IR reflections.
The methods in the other thread didn't make much sense to me.
Sorry that is the way to do it. You will have to try and understand what is being done. Ask about the bits you don't understand.
Thanks for your help here. What I don't quite understand is what someone said in the other post (may have even been you) about pulsing the light. It said to place 38kHz on one pin and 500 Hz on another and place the IR light "between" them. What does that mean to place the light "between" two pins? Also, and this may be totally unrelated, but would the pulseOut() command be useful here? Or would I lose control over the frequency by doing that? My main problem is getting a 38kHz IR light of some sort pulsed in a way the sensor can receive it effectively. Thanks for your patience and your help.