Infra-red remote control that doesn't conflict with other remotes

[perdrix]

I want to control an A-B amplifier switch (to switch a pair of speakers to different amplifiers).

I'm pretty sure I can do this with a single remote controlled relay that energises a couple of DPCO relays.

The remote only needs two buttons which can be labelled On/Off or A/B.

The challenge is that while there's lots of IR remote relays for little money on eBay, none of them seem have a means to configure them so they won't conflict with other IR remote controlled devices.

I don't know if the old Philips RC5 system is still used, or whether it has been superseded by something else given that it only supports a maximum of 32 device addresses.

Thanks
David

[DavidAlfa]

Nec IR protocol is widely used.
Normal standard uses 8-bit address, extended is 16-bit.


https://www.sbprojects.net/knowledge/ir/nec.php

Apple IR uses a slighly modified NEC protocol, 16bit address and 16 bit data, but it's easy to work with.
For little projects it's a great small remote:
https://hifiduino.wordpress.com/apple-aluminum-remote/

[perdrix]

Any product recommendations please?

[tooki]

What exactly is causing you to fear such a conflict?!?

If you’re buying an off the shelf product, you have to use whatever remote it comes with. If you’re building your own device, you can use whatever IR codes you want. IR remote conflicts are extremely rare, with the only real problems being when you have multiple devices of the same type and brand in the same room (e.g. multiple Sony TVs).

[tooki]

Apple IR uses a slighly modified NEC protocol, 16bit address and 16 bit data, but it's easy to work with.
For little projects it's a great small remote:
https://hifiduino.wordpress.com/apple-aluminum-remote/

They don’t make it anymore. They switched to Bluetooth years ago, with the remotes only having IR to control your TV volume and power.

[DavidAlfa]

You could still buy them at least two years ago.
https://www.amazon.com/Apple-MM4T2AM-A-TV-Remote/dp/B01DN08VAY

Used, they're everywhere at Ebay!
Of course the receiver will need to be custom-made using a mcu, arduino or whatever.

I'm using exactly these for a commercial product controlling vintage Hi-Fi devices, the aliminiuym and minimal design does great.