resistance Archive

  • #31 - LED

    Driving an LED with or without a resistor

    Have you ever wondered why you need to have a resistor in order to safely light an LED without blowing it out? Well, this post from Tinkerlog.com describes many reasons why it is a good idea. It also shows situations in which you might not...

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  • Old CD drive PCB

    Intro to Electricity, Part 1: Basic Properties

    In order to understand the electronic prototyping and robot building we do in robotics, it helps to have a little knowledge of the theory of electronics. Let’s start from possibly the most fundamental idea of electricity: the atom. What is electricity? In Science class, you’ve...

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