Spartronics countdown clock

Counts down the time until events such as kickoff, first competition, etc. Scrolling message is supported which is set via the mode button

Parts

3 buttons control the behavior of the display
- Mode - Change between countdown and messages
- Inc - Change between countdown and date/time
- Dec - Display the name of the next event
To set the clock (ie, adjusting for daylight savings)
- Connect a computer to the USB port of the clock module
- Load the Arduino IDE, and select the port where the Teensy is connected (Tools -> Port)
- Start the Arduino serial monitor (Tools -> Serial Monitor), and set data rate to 115200bps
- On clock module, change mode to time display by pressing Inc twice
- While the time is displayed, click Mode twice (quickly)
- The words SET TIME should be displayed in red on the clock, and a prompt message should be displayed o the serial terminal
- Using the serial terminal, follow the prompts and enter the time in the format YYYY:MM:DD:hh:mm:ss
  - The date can be copied to clipboard on Mac with the command: date +%Y:%m:%d:%H:%M:%S | pbcopy
- If successful, the new time should be displayed. Otherwise, you must re-enter time setting mode and try again
To start a new countdown
- Add the new date to spartronics_clock.ino as the last entry in _important_times[] in the format { Year, Month, Day, Hour, Minute, Second, "Name" },
- Load the code onto the Arduino. You may need to add new libraries in order for this to work.
- It will now be used on the Arduino in countdown mode.

TBD

Use the EEPROM on the RTC board to store message strings that can be updated via the serial terminal
Use the EEPROM on the RTC board to store upcoming countdown dates that can be updated via the serial terminal