IR controlled LED color mixing...

Other Hardware General Electronics
1

Hello Everybody
I'm completely new to electronics so I apologize for my newbie way of explaining what I try to do.

I want to build an IR transmitter with three pods that can remote control 3 LEDs for color mixing.
So far, I have figured out on how to have the pots control the intensity of each LED, but even after
a good amount of re-search, I can't figure out on how to send the value that I'm reading of the pots
over an IR signal to the LEDs.

I use this code to get the desired brightness value from the pots:

RVal = analogRead(RLed) / 4;
GVal = analogRead(GLed) / 4;
BVal = analogRead(BLed) / 4;

//gives me a value between 0-255 for each of the three LEDs

My problem no is how to send these values over an IR signal.
I found out on how to pulse the IR signal etc. but I just can't figure
out an easy way to just transmit three bytes of data.

Once the three values are transmitted, I should be able to adjust the LEDs with this code:
analogWrite(ROut, RVal);
analogWrite(GOut, GVal);
analogWrite(BOut, BVal);

Am I generally on the right track, or is there a better way to do it? Any chance somebody can give me some input on how to write the code for this
or direct me to some literature/website that might be helpful? I would really appreciate it :slight_smile:
(PS: Sorry for my English, it's not my native tongue)

2

I just wanted to add something. What would also help me if somebody could tell me how I can translate a numerical value like for example 125 into binary code....
I'm just looking into how to transmit 24bits over IR (8bits for each LED)....

3

This is not the normal TV stuff that IR gets used for, you need to look at sending data. It is a bit more advanced, maybe too advanced for your current state of knowledge. Start looking here http://www.irda.org/

There is no need to convert anything into binary, that is how it is stored in the computer.

4

Thanks for the link. I thought it should be possible with a normal TV remote protocol like the X-Sat or Mitsubishi protocol, since some of them can transmit 32 bit of data, which would be enough for my application...