This clock uses the first 192 digits of Pi number to display the time in a 32 x 8 LED matrix in an original way.
Project tutorial by LAGSILVA
This is an original ternary digital clock running with Arduino! It's very simple and unlike anything you've ever seen!
This project is about an Arduino running a digital clock, a stopwatch, and a timer simultaneously!
Another one of the series of unusual clocks I made.
Video tutorial by Mirko Pavleski
This project was done and tested for DS1307. For DS3231 you should use the library of DS3231 and do some adjustments if necessary.
I did no test it with Nano, but you can try use it with no modifications.
Normally, almost all programs for Uno can run with Nano too.
Hello, Prasanta Paul,
It sounds there is missing some library (RTC or Time) in your desktop.
You need all the following libraries for this project:
#include <LedControl.h> // Library for LED Matrix - MAX72XX
#include <Wire.h> // Library for DS1307RTC - Pins of Arduino UNO: A4 (SDA), A5 (SCL)
#include <DS1307RTC.h> // Library for Real Time Clock
#include <Time.h> // Library for Time
Try install all of them in your Arduino's IDE, recompile the program and inform me.
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