I'm looking for a way to control several analog sound inputs - want just one at a time, and want to be able to control them remotely. The remote part is not that hard, remotes all set up for arduinos are all over ebay. But I'm not coming up with how you switch between inputs. My original thought was to use some double pole relays controlled by various pins. But relays that are dp and not latching, and use less than 40ma current... not so easy to find nor are they cheap.
So, possibly I'm overlooking something, but I haven't come up with any other means. I want a remote volume control and source change, and the amplifier, arduino, etc, all go in one case. Any other suggestions?
Can't use anything that will distort the sound, nor have any common inputs, so yes, it must be at least double pole - one relay per channel, 2 relays per source input. 4 source inputs equals a lot of relays.