The back to the future time circuit utilizes components and part of the design as shown at adafruit.com.
The time circuit utilizes 2 Arduino uno controllers, a real time clock, (12) 1.2 inch 7 segment led displays, arduino wave shield, and a custom aluminum enclosure,
The current time is the actual time and represents the real time clock circuit. The last time departed and destination time displays cycle every 15 seconds through birthdays and other dates and times of significance to my family.
The time circuit announces the time on the hour and half hour. Some random phrases are also announced at different time intervals. The time and phrases utilize a Doc Brown voice. I utilized the services of a Doc Brown voice impersonator on Fiverr.com to provide the audio tracks I needed. If you need excellent voice talent at a reasonable price, contact Stevevz at fiverr.com.