Instructable at: Automatically fills the reservoir of a Bunn coffemaker and initiates a brewing cycle. Duplicates the function of a commercial automatic Bunn brewer in a consumer model at a fraction of the cost! The Arduino allowsa 2 seconds to 5 minutes setting of the timer, controlled by two buttons inside the case. The timer setting is stored in non-volatile memory and retrieved on power-up or reset. The LED will blink out the current setting if either setting button is held down after setting. I also added a 10 minute lockout timer after a brew cycle, as well as [More]