100V 0.15A standard switching diode, DO-35 Pin header 2.54 mm spacing 2 pin Molex header 2.54 mm spacing"/> Quad operational amplifier, DIP-14 | | | | | Screws, nuts, and spacers (see [build notes](build.md | | D 2 pin Molex connector 2.54 mm spacing D Switch, three position, single pole double throw, illuminated paddle, http://www.nkkswitches.com/pdf/gwillum.pdf switch single-pole double-throw ON-OFF-ON D Single Pole.