Damnit. Been working on a hardware game for the girl (Simon Says, but Seren Says - and arcade led buttons control a hue light), was going really well until smoke came out of it.
Taken me 2 hours to desolder and rip apart.
Spotted the exploded component too. Poop. Redeploy then?
Pretty sure I accidentally shorted the 5V line with the multimeter (though the LEDs won't working since I moved it out of the breadboard, so obviously something else was broken.
Still, exploding component added to my bucket list.