A trill, generally three very fast notes on updating the fireball for rev 2 beta README.md | 3 pin Molex connector 2.54 mm spacing Pin header 2.54 mm 2x5 Audio Jack, 2 Poles (Mono / TS), Switched T Pole (Normalling)"/> Schottky Barrier Rectifier Diode, DO-41Schottky Barrier Rectifier Diode, DO-41 | | | U1.