If you have any questions, feel free to leave them in the comments below.
Teensy Halfkay Bootloaders [ https://goo.gl/jT1jMx ]
PJRC Keyboard table [ https://www.pjrc.com/teensy/usb_keyboard.html ]
PJRC Pin Layout (Use Adruino) [ https://www.pjrc.com/teensy/pinout.html ]
Code Sample: [ https://goo.gl/ejJqvE ]
