Reply to new to controllerism, need help learning

Hey guys, i have a qwerty keyboard, lots of them actually, and lots of mice(im a cisco systems engineer..lots of random parts haha) and im just wondering if keyboards have the ability to be converted into controllers? not mapping the keys, but using their internal hardware to make a controller.. and if there is do you know good threads you guys have to learn about it or..you know wherei can learn or find cool ideas? ive been browsin this community a ton but i cant find lots of stuff on using a keyboard, just game controllers..thanks guys!