Pure analog goodness. This one is actually super simple, but rather useful in my opinion. Three audio jacks hooked up to a DPDT switch. With this it’s possible to switch between 2x inputs and send it through 1x output OR have 1x input and switch between 2x outputs. So say you have a DAC, headphone amplifier, and a speaker amplifier. This thing would allow you to switch between the headphone amplifier and the speaker amplifier literally at the push of a button.
Schematic is a mess, but it kinda has to be because of of how everything is paired up ↓
I think I may have to split the grounds apart to prevent grounding issues. Haven’t run into any really issues yet however ↓
What I didn’t realize when making the package for the switch is that I got the two pins that are attached to the case backwards. The pin on the left should actually be towards the middle, the pin on the right should be towards the top. I’ve already fixed the package in EAGLE though and updated the board file, so any future uses should be fine ↓
Push the button to make the magic happen ↓