Back to the future clock

Partlist

• 2x Arduino Nano
• 9x Adafruit 0.56" 4-Digit 7-Segment Display w/I2C Backpack https://www.adafruit.com/product/881
• 1x CD74HC4067 16-Channel Multiplexer
• 3mm plywood

Setup software

• Install Arduino IDE https://www.arduino.cc/en/Main/Software
• Install CH340G drivers http://www.wch.cn/download/CH341SER_EXE.html (at time of writing, the latest version 1.3 does not work with macOS Sierra. If this is your case, try these instructions https://github.com/adrianmihalko/ch340g-ch34g-ch34x-mac-os-x-driver )
• Download and unzip this repository (or use git if you want). Click the green "Clone or download" button to do this.
• Download the two following libraries and install it in Arduino IDE by selecting Sketch > Include Library > Add .ZIP Library
  • https://github.com/adafruit/Adafruit_LED_Backpack
  • https://github.com/adafruit/Adafruit-GFX-Library
• Open the arduino_keypad/arduino_keypad.ino file in the Arduino IDE and check that every thing is ok by clicking the verify button. (no red errors)
• Connect the arduino to the computer
• Configure the board and port by selecting Tools > Board > Arduino Nano, and Tools > Port > /dev/cu.wchusbserial1450. (or on windows, select the correct COM port)
• Upload code to the arduino by clicking the upload button

To change date and time

Change these lines in arduino_keypad/arduino_keypad.ino and upload the code

   initialDestinationDate = new DateTime(1984, 8, 12, 23, 7);
   initialPresentDate = new DateTime(2017, 4, 10, 9, 36);
   initialLastTimeDepartedDate = new DateTime(2016, 4, 29, 21, 6);

Licenses

• This project itself is licensed MIT, see LICENSE file for details
• Adafruit_LED_Backpack (MIT) https://github.com/adafruit/Adafruit_LED_Backpack
• Adafruit-GFX-Library (BSD License) https://github.com/adafruit/Adafruit-GFX-Library