What is the watchdog and how to use it
Today I want to talk about a particular dog. Not a normal dog, but a special one who doesn’t need a leash. This dog watches you… and it’s…
Blog
Category: KeyChainino
How to drive many LEDs with only few pins: Charlieplexing
The KeyChainino arkanoid-like game is based on a ball that bounces on the “screen” (the LED matrix) and a paddle that stops the ball from falling off the bottom of…
How to solder THT
This is the tutorial dedicated to THT, the through-hole KIT version of KeyChainino. On this page you’ll learn, step by step, how to mount and solder all the components…
[DIY] Make your own KeyChainino
Many people, inspired by KeyChainino’s Charlieplexing, have developed their own device using KeyChainino’s sketches from my GitHub. Someone has designed their own matrix schematic, someone else asked me…
[TUTORIAL] How to make the WALLED game step by step – Part 4
In the previous tutorial, we learned how to handle the collision between the “man” and the “wall” in the WALLED game. Today we make a function that increases…
How I have increased the battery life of my Arduino project by 3000%
Yeah, I’m not kidding! What I’m about to tell you will increase the battery life of your Arduino project by 3000%, if you are using LEDs. I want…
[TUTORIAL] How to make the WALLED game step by step – Part 2
In the previous tutorial we learned how to make the “man” of the WALLED game and how to move it. Today we start to build the descending walls and their…
[TUTORIAL] How to make the WALLED game step by step – Part 1
Making a game for KeyChainino is really easy. To prove it, I decided to write a tutorial that builds the WALLED game step by step, in a really…
How to solve your electronics writer’s block
A few days ago I thought that, when you have finished the Arduino handbook, when you have bought all the sensors on the market and all the shields…
Arduino LEDs shield? No Thanks!
Today I searched the web for some LED boards for Arduino. I found a lot of really cool stuff!