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 don’t need a leash. This dog watch you… and is called the watchdog 😀 The watchdog – according to wikipedia – is an electronic timer that is used to detect and...
How to solder THT

How to solder THT

This is the tutorial dedicated to THT, the through-hole KIT KeyChainino’s version. In this page you learn, step-by-step, how to mount and solder all the components on the PCB to make your THT. Download the schematics and the eagle file here:...

[DIY] Make your own KeyChainino

Many people, inspired by KeyChainino’s Charlieplexing, have developed their own device using KeyChainino’s sketch from my github. Someone has designed it’s own matrix schematic, someone else asked to me for the KeyChainino’s schematic to help...
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