V2 - Lots of new functionality & bug fixes thanks to Thomas Winischhofer (A10001986)

[CircuitSetup]

Update to v2 of software. Includes a lot of new features and bug fixes, including:

New Functionality:

• Added alarm functionality (enable by holding down "1", disable by holding "2")
• 24 hour mode added
• New Keypad menu for adjusting various settings
• Configurable WiFi connection timeouts and retries
• Return from Time Travel (hold "9" for 2 seconds)
• Support for time zones and automatic DST
• "present time" now functions as a clock (not stale) after time travel
• Added incorrect date sound
• Selectable "persistent" time travel mode (any changed dates are stored in memory upon reset, otherwise they will rotate preset times from the movie, and display the real time on reset)
• Added night mode (enable by holding "4", disable by holding "5")
• An SD card can now be inserted so custom sounds are played
• Added ability to trigger a time travel event (pull io14 low)
• Added "fake power on" and off facility (TCD will boot, setup WiFi, sync time with NTP, but not start displays until an active-low button is pressed connected to io13)
• Show "BATT" during booting if RTC battery is depleted and needs to be changed
• Sounds cleaned up, volume normalized, and updated

Bug fixes:

• More stable sound playback
• Fix for flakey i2c connection to RTC (check data and retry)
• Fix "animation" (ie. month displayed a tad delayed)
• Integrate a modified Keypad_I2C into the project in order to fix the "ghost" key presses
• After a time travel, entering a new date now works correctly

[realA10001986]

"fake power on" is actually "fake power", you need a switch, not a button, since you can fake-power the device on and off.

The time travel via io14 is, however, really a button, needs to be pulled down for 200ms.

[CircuitSetup]

More New Functionality:

• Time travel sequence now longer and includes display "noise"
• Added intro with sound as the displays show "Back to the Future" - option to turn on/off
• Sound file "hour.mp3" is played hourly on the hour, if the file exists on the SD card
• Holding "3" or "6" plays sound files "key3.mp3"/"key6.mp3" if these files exist on the SD card
• Better volume control - ability to specify volume via software or hardware
• Display connection status and IP address in display settings menu