# Binary metric clock; easy Arduino project.

This is a very odd kind of clock, which can easily be made with simple supplies.
To begin the explanation, I would like to say that I have always wanted time to be metric. 5 o'clock would be mid-day, 7:5 would be three quarters (6:00 pm), and so on. This prototype tells deci-days, centi-days, and milli-days, in that order. For those that are unfamiliar, ten deci-days are in a day, ten centi-days are in a deci-day, and ten milli-days are in a centi-day. For comparison, a milli-day is 86.4 seconds.
With my limited supplies, I had to make it read in binary, but that's alright with me!

A note:
I am a beginner at Arduino. And a beginner at instructables. So at times it may not be perfect, and I hope you have some understanding!

## Step 1: Supplies

Here is a list of what you'll need (not very much):
12 leds.                              It helps if 8 are one color, and 4 are another, but that isn't all that important.
12 330 ohm resistors.     10k works too, but it makes the leds a bit dim.
An Arduino                        I have an Uno r3, but anything with 12 or more output pins will work.
A breadboard                   You could probably survive without one, but I would highly recommend one.
14 Wires
alecnotalex (author) 3 years ago
Update:
http://www.instructables.com/id/Metric-Clock-Take-2/
janw3 years ago
I love clocks and I like the idea that you use for your time measurement. You got a vote!
Bot13983 years ago
I love this idea!!
Voted =D
alecnotalex (author)  Bot13983 years ago
Thanks!