AKSoapy29 wrote:Ok, who's Paul?
That's me, the author of Teensyduino.
Yes, you can "hold down" a key (or up to 6 normal keys and also shift/alt/control/win keys). But you can't do it with Keyboard.print. You'll need to use the "micro manager" functions which let you directly control the messages sent to your computer.
This page has the details.http://www.pjrc.com/teensy/td_keyboard.html
Scroll down to "The Micro Manager Way" section. Just set the key you want to hold down, and call keyboard.send_now(); When you later want to release it, set the key to zero and send it again. It's that simple!
With all keyboard projects, be sure to save your work first. It's easy to accidentally make a key auto-repeat and overwrite all your hard work with lots of keystrokes. Save before you click Upload.