Arduino LEDs shield? No Thanks!

Today I searched the web for some LED boards for Arduino.

I found a lot of really cool stuff!

There was a shield for Arduino with many LEDs using Charlieplexing Matrix, a shield with some RGB LEDs, LED displays with thousands of LEDs that communicate with Arduino through the serial port.

Many other shields with 7-segment displays, others that drive high-current LEDs, others that make LED watches, others are LED cubes.

Really awesome stuff!

If you love LEDs, making games or working with scrolling text, surely you have found these things on the net.

But you understand that you always need an Arduino, a shield, a power supply adapter or, if you are lucky, a battery pack.

“Just in the size of” … a big box!

Well, if you want to use LEDs on Arduino but you want to reduce the size of your equipment, there’s only one thing you need to do:

Use KeyChainino, with a 6×5 LED matrix, “in the size of” … a keychain!

Forget shields, wires, power adaptors, KeyChainino just works!

It has an Attiny84 microcontroller (programmable with Arduino), 30 LEDs, two buttons and a CR2032 battery, all in one board.

Again, in the size of a keychain 😀

Do you want to build your own game?
Check out the arkanoid sketch, work on it, and apply some changes to make your own original game.

Do you want to wish your friends a Merry Christmas?
Just check out the scrolling text sketch and build your own text to scroll in the KeyChainino matrix!

Easy Peasy, with KeyChainino!