🚀 go-pugleaf

In article <1992Sep2.003540.24065@aio.jsc.nasa.gov> mancus@roger.jsc.nasa.gov (Keith Mancus) writes:
>  We're in the process of building a small robot, and we'd like it
>to respond to a TV remote control.  Can anyone tell us:
>
>  (1) Is there a standard carrier frequency?

There isn't a standard ANYTHING. Many remotes operate on 40kHz IR carrier
frequencies, but it's far from being a standard.

>The IR sensor we're using detects 40 MHz.

Unless that was a typo and you really meant 40kHz, your sensor is
probably useless for picking up IR transmissions from TV remotes. ;-)

>  (2) Is the encoding scheme standardized?

Not by a long shot.

>  (3) Are there any other pitfalls we should know about?

Borrow/obtain an oscilloscope, hook the output of your IR receiver to
the scope's inputs, and power everything up. Then aim the remote you
intend to use at the IR receiver module, and observe the oscilloscope
screen. After playing around a bit, you should be able to determine the
encoding scheme used, or at the very least which patterns go with which
buttons, and programn your robot to respond accordingly. If the screen
remains blank, either your remote is broken or it's not using a carrier
frequency compatible with your IR receiver.