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Basics

A collection of 4 posts
Pull-up / Pull-down resistor
Basics

Pull-up / Pull-down resistor

Understanding why and how use pull-up and pull-down resistors was mandatory to build my first Arduino based circuit.
Feb 1, 2016 3 min read
NPN transitor in application
Basics

NPN transitor in application

How to use NPN to control large current which an output pin of an Arduino board cannot manage by itself
Feb 1, 2016 3 min read
Ohm's law in application
Basics

Ohm's law in application

The Ohm's law is the first rule to understand to be able to connect e.g. a LED to a power supply.
Jan 9, 2016 2 min read
The breadboard
Basics

The breadboard

Let's discover breadboards in usage and in pictures.
Jan 9, 2016 2 min read
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