Electrical – use logic analyzer to learn remote control IR codes

infraredlogic analyzerremote control

I've just ordered this generic logic analyzer (didn't get it yet).

Does the specs (channels/speed/accuracy) of such a cheap analyzer can be used to analyze IR remote control code sequences so I'll be able to send them later from a device I'll build?

If such an analyzer it enough to achieve this mission, can one guide me please what a circuit I have to build to be able to catch the signals from the IR RC led?

(I have an TL1838 38Khz IR sensor, but don't really know how to include it in a circuit).

The best way for me, I think, will be to see the signal using the logic analyzer (it it capable of it) from a simple electronics circuit, without the need of Arduino connection and programming.

So (and this is an Edit after reading some of the great and informative answers and comments) – A receiver circuit should be simple to build and connect the analyzer into it? What about software to 'understand' the IR codes?

Best Answer

I did this as a class project in college. The remote LED frequency is very low, and codes are only a few bytes, so almost any analyzer will work.

If such an analyzer it enough to achieve this mission, can one guide me please what a circuit I have to build to be able to catch the signals from the IR RC led?

You don't need to build anything. Just open the remote and put the analyzer leads on the LED pins directly. Start the analyzer and then push each button. Once you have a few button traces you can look up which protocol your remote uses or just keep going until you have the entire list of command codes.

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