Skip to main content

This Fibonacci clock forces you to do math to tell the time

the fibonacci clock requires math to tell time
Image used with permission by copyright holder
Some people like a little challenge in the morning, and that’s what Philippe Chretien hopes to offer with his new device. He is the man behind the Fibonacci Clock, which is exactly what it sounds like: a clock that uses the Fibonacci sequence to display the time.

To back up a little bit, it’s essential to understand the Fibonacci sequence. Developed by mathematician Fibonacci in the 13th century, this sequence of numbers starts with one and one. Each subsequent number is the total of the previous two numbers (so one and one makes two, two and one makes three, and so on). To create this clock, Chretien used five terms: one, one, two, three, and five.

Recommended Videos

The screen of the clock has a series of glowing, colorful squares, and each one corresponds to a number in the sequence. Hours are depicted in red, while minutes are shown in green. If a square is used to show both hours and minutes, it turns blue. All of the white squares are for decorative purposes; you consider them null while adding up the time.

Please enable Javascript to view this content

Of course, you’ll need to do a bit of math in order to get the time of day from this alarm clock. To read the hour, you add up the values of the red and blue squares. For the minutes, you do the same with the blue and green squares. Minutes are displayed in five-minute increments, meaning you have to multiply your sum by five to get the accurate total.

Once you get used to the math, the clock serves as more than just your wakeup reminder; it can be programmed to act as a lava lamp with changing colors.

Additionally, Chertien made the clock to be hackable. The device itself is powered with an Atmega328 microcontroller that runs Arduino, and users can change the clock’s code using Arduino IDE. He designed the alarm clock to be an open-source hardware project, and he welcomes you to customize it to your liking.

For about $95, you can make a pledge on the Fibonacci Clock’s Kickstarter campaign page and receive one in the mail by October 2015. However, you can pledge $62 to receive a DIY kit including everything you need to create your own Fibonacci Clock if you’re feeling adventurous.

Krystle Vermes
Former Digital Trends Contributor
Krystle Vermes is a professional writer, blogger and podcaster with a background in both online and print journalism. Her…
Cyber Monday discounts: Certain Yeti gear is 20% off today
A woman using the Yeti 35oz Rambler with Handle and Straw Lid.

Who wants to carry around a boring plastic thermos this holiday season? Certainly not any of you dedicated deals hunters! We’ve been tracking Cyber Monday markdowns, and we’re pleased to inform you that everyone’s favorite beverage-adjacent brand, Yeti, is offering solid discounts on Amazon for the annual savings event:

Right now, when you purchase the Yeti Rambler 46oz Bottle on Amazon, you’ll only pay $44. And if you order the Yeti Rambler 35oz Tumbler with Handle and Straw, you’ll only pay $34. That's a 20% discount on both.
Yeti Rambler Bottle -- $44 $55 20% off

Read more
Cyber Monday power tool deals: Up to 45% off DeWalt, Milwaukee, more
A DeWalt drill being used.

Cyber Monday has officially started and there are tons of Cyber Monday  deals going around. While you might not think of a power tool as being as Digital Trends worthy as what you'll find in, say, these Cyber Monday  tablet deals, there's a big case for them. Let's say that you take part in Cyber Monday TV deals and decide to mount your new TV. You'll want a drill/driver for that. Maybe you partake in soundbar deals? You can mount those, too! Even if you are going for Cyber Monday  gaming laptop deals, you might decide to mount a secondary monitor near your gaming desk so you can pop up a stream on the side when you are ready for an on-the-desk gaming sesh. Do you see what we mean? Seemingly anything you buy these days might have some mounting feature — and, yes, that includes vacuum cleaners — that you might wish to utilize. So, go ahead and shop these Cyber Monday power tool deals.
Our top pick: DeWalt 20V Max Cordless Drill/Driver Kit — $99 $179 45% off

DeWalt really ups the game here on entry level battery-powered tool kits with this offering. In addition to the drill, you get a charger and two batteries. This makes for the perfect launching point for your DeWalt collection, making acquiring "tool only" (i.e. no battery) DeWalt power tool deals more accessible. It also just happens to be a great drill. Buy it now while it's just $99.

Read more
Amazon Prime members: This electric shovel is 36% off for Cyber Monday
The MZK 20V 13-inch Electric Snow Shovel.

Snow shoveling is one of the biggest bummers of the winter season, especially if you’re a person who despises the cold. Thankfully, we’ve been seeing a lot of great Cyber Monday discounts on outdoor tech (including a ton of great Cyber Monday snow blower deals). And if you’ve been looking for a way to take some of the strain out of shoveling the front walk, today is your lucky day: 

Right now, when you purchase the MZK 20V 13-inch Electric Snow Shovel, you’ll save either $40 or $73 (Amazon Prime members receive the maximum $73 discount).

Read more