" PCB "

How to build a reverse “mux” headphone splitter (2 inputs, 1 output)

So i’m sure you’ve seen those Y splitters you can purchase online that are used for instances where maybe you want to have two headphones hooked up to a phone or laptop…but what about when you want to have two outputs going to one input? You could in theory just hook it up in reverse, but then you are risking damaging those devices and i’m sure you don’t want to ruin something worth hundreds or thousands of dollars just to save a couple bucks. Say you want to have your laptop and desktop connected to your speakers…but the speakers only have one input, that’s the idea behind this…you can purchase switches out there that require you to manually change the input, but that wouldn’t work for me. So here’s how I built my own for only a couple bucks… (more…)