Multimodal Clock

I love clocks! I was looking for an instructable for a clock displaying roman numerals on screen. When i did not get any suitable ones on arduino base, i decided to build one myself. Coupled with a color TFT display, I was wondering what else can be displayed and viola! thoughts of various number systems studied in my bachelor of engineering college days (more than 2 decades back!) came rushing in:Binary, Digital, Octal & Hexadecimal etc etc

This though got me started and after much planning & coding, here is the implementation t!

Distinctive features of this clock:

• Multi-modal display where you can have time shown in 5 various number systems in one screen or each number format shown in separate screens selected by a push button.

• The clock face orientation can be on any 4 sides and the data on display can aligned to the orientation using a push button. Later i intend to use a gyro/acceleration sensor to orient the display based on the side it is turned on.

Modes available

• Digital

• Roman

• Hexadecimal (Base 16)

• Octal (Base 8)

• Binary (Base 2)

For someone new to these numbering systems here are the links from the net
Binary format: https://www.wikihow.com/Read-Binary

Octal format: https://www.wikihow.com/Read-Binary

Hexadecimal format: https://www.wikihow.com/Understand-Hexadecimal

Roman format: https://www.wikihow.com/Read-Roman-Numerals

Items needed:

• Arduino UNO/Nano or equivalent
• TFT Display:1.44 inch 128*128 SPI display based on IL9163 (ordered long back via aliexpress) (RED PCB)
• DS 3231 RTC module
• Push button switches 2
• Breadboard, PCB,connecting wires
• Optional: Soldering iron,General purpose connecting wires and a suitable enclosure (I am yet to decide one for this clock)

Use these connections between the RTC & Arduino. Refer to the hand drafted schematic picture for reference.

• DS3231----Arduino
  • SDA-->A4
  • SCL-->A5
  • Vcc--> 5V (from Arduino)
  • GND-->GND (from Arduino)
• Arduino----TFT display
  • 9-->A0
  • 10-->CS
  • 11-->SDA
  • 13-->SCK
• Arduino connections
  • Vcc-5v
  • GND-GND
  • 2-->GND via push button (Display mode change button-Bin/Hex/Dec/All)
  • 3-->GND via push button (Display orientation change button)
• Display connections
  • VCC-->3.3V (from Arduino)
  • GND-GND
  • RESET-->3.3V
  • LED-->5V (from Arduino)

Use the attached .ino file for the entire code with comments which are self explanatory!

You have a beautiful and geeky clock on your desk and there's lots of room for new ideas

• Change display or refresh only specific parts of the screen to make display refresh faster (this current implementation sometimes misses displaying a second due to the refresh of the whole screen)
• Add a gyro/accelerometer board and associated code to adjust the display rotation to match the enclosure orientation
• Let your imagination run wild...

Last but not least,if you like my clock do vote for it in the Clocks Contest running currently