Feel free to vote for me in the microcontriller contest if you like my project. It would appear that contest might be specific to making things move. So what does this move? It moves the student who stayed up too late doing homework, it moves the parent with a new born child, it moves the Instructables author who was compelled to finish their project against all common sense. It moves what can often be the most immoveable of objects... you.
Direct link to this video http://www.youtube.com/watch?v=szoPO75u46s
Steps 9 and 10 have additional videos.
Some key features:
-Any button press will silence the alarm for 30 seconds so you’re not listening to the buzzing while playing Tetris.
-User can select how long the snooze interval is (with second granularity), how many times you’re allowed to hit snooze (0-255), and whether the snooze interval is from the time the alarm went off or the time the snooze button (any button) is pressed.
-Two separate alarms: One is a traditional alarm that will go off when that time is reached and then disabled for the following days. The other is what I call a “persistent” alarm that goes off at the same time Monday through Friday so isn’t disabled for the following days.
-It uses large numbers for which I was inspired by this Instructable and he got the idea from here .
-It gets power from a base that it sits on but has a rechargeable battery backup so you can tilt the clock without being encumbered by wires. The switching to and recharging of the NiMH battery happens automatically.
-It has a physical key to silence the alarm which is given to your spouse/roommate/parents so the alarm can be silenced with having to play Tetris
-The backlight brightness is user controllable through software and the backlight is turned off when not on the base to conserve power and indicate that external power is absent.
-You can cancel the alarm at any time, even before the snooze intervals have passed, by playing Tetris.
-Four different styles of Tetris, details Step 8.
-When setting the time and alarms instead of the typical adjusting of hours and minutes the user can adjust tens of hours, hours, tens of minutes, minutes, tens of seconds, seconds, tenths of seconds, hundredths of seconds (yes, really) and day of the week. This allows for quick time setting and ability to synchronize easily with another time source. See Step 9 for details.
Other points of possible interest:
-Use of interrupts, Step 4.
-The best (in my opinion) way to debounce switches, Step 5.
-Use of PROGMEM to store strings to save on memory, Step 7.
-Precise and simple instructions for using the Sparkfun FTDI Basic Breakout board and making a barebones Arduino board, Step 13.
-Keeping time with an Arduino without a separate real time clock, Step 2.
-How to deal with the fact that the Arduino function millis() wraps back to 0 every 50 days or so, Step 2.
This is my very first Arduino project and I have to say it’s a pretty slick environment.