As you might expect, this has resulted in plenty of variations of the original Arduino board. Ladyada points to the , which is made with DIY gaming in mind. And is essentially an Arduino board put ...

From that point forward the new key is permitted to activate the system. Whenever a valid key is swiped, the Arduino triggers a relay which can then be used to control just about anything.

Monkey around with those numbers and you can make the light on the board flash faster or slower within a couple of key strokes. “Arduino has lowered the barrier,” says Andrew Sliwinski ...