I have for sale a kit of all the electronics you need to build your EgroDox keyboard (does not include the Teensy 2.0). I needed a set for myself, so I bought extra to sell as a kit here. Here is a list of what is included (includes a few extras of some things):
1 x MCP23018 through hole I/O expander
2 x 3.5mm TRRS connector
1 x USB mini B receptacle
1 x USB mini B male connector
2 x 0.1uF ceramic capacitor
78 x 1N4148 diode (surface-mount)
2 x 2.2k ohm resistor
4 x 3mm T1 LED
3 x 220 ohm resistor
1 x 1.5ft TRRS cable
Price is $26 as goods, shipped to the US, including PayPal fees.International shipping will of course cost more.I have
four (4) three (3) two (2) last one! no more of these kits available. All gone, thanks everyone!
Now, could you go to Digi-Key and order the same things for the same price? Of course! But I am packaging it as a kit, and I have already done the "heavy lifting" for you.