I'm using a 555 timer connected to a keyboard to press keys.... Im trying to compact it but as of now have yet to find a IC chip that i can connect to an USB wire that will read as a keyboard or mouse. I took apart a mouse that has a IC chip that i can plug into a breadboard but that is completely useless if i can't find a datasheet on the IC. Also it seems i can't power the 555 timer off of the USB port at all i've tried from the keyboard power and it gives me scrambled random key presses. Ive also plugged a separate USB wire in and used that for power and same thing so ive been forced to power it from a 9v battery.