I'm trying to install a stereo amplifier in a public space for people to use, and unfortunately the amp we bought requires pressing a button on the IR remote to pair a new Bluetooth device. I'd rather not leave the remote, which seems doomed to be abused.
Is there a way to use an Arduino to send an IR code (if that's the word) for a given button on an IR remote? In other words learn the frequency of the pairing button, then make a box with a button that when pressed sends the "pair" command?
Or maybe some other device that will let me send a specific button command from an iR remote? (That isn't another standard remote control, I'd prefer just a single hard mounted button).
Use an Arduino and an IR receiver with the IRremote library (or other IR receiver library) to find the code and protocol of the IR remote signal. Then an IR LED and Arduino and IRremote (or other IR receiver library) library send function to send the command. This has been done many many times, so you should be able to find tutorials on line.
The IR receiver sensitive frequency needs to match the remote control modulation frequency. 38KHz is a common frequency, but not all remotes are 38KHz. It is a good starting point.