can arduino control other systems buttons?

Other Hardware General Electronics
11

Thanks for posting this. Your schematic is very helpful. I've been able to get it to do everything I need (except pause and previous track) with just 2 reed relays. The trick is to short volume + switch which gets you 100% volume at power up then connect two reed relays to switch the following:

  1. Volume -
  2. Next

With these you can do the following:

  1. Ramp the volume down to 0%
  2. Skip to next track. Can be used to repeat track if you know the track count just cycle through all tracks until you get back the the one you want to hear again.
  3. Use combination of 1 and 2 to ramp down one track before playing another or to simulate Stop