Arduino Fundamentals is an online exam that provides official certification on your knowledge of Arduino related electronics, programming and physical computing. Several programming and teaching jobs requires the fundamentals exam to hire applicants and even when the exam is not required it could be a little advantage to get a job. Ok then. What do you have to do? According to Arduino you will need to buy the starter Kit at $91.90 plus shipping and then pay $30 for the exam. That amount seems a lot, specially if you already have some Arduino boards, materials and experience. But even in that case, you could fail the exam. There are some specific things being asked that you may not know. For example, do you know how to turn green one RGB Led with a 220ohm resistor? Or do you know how to calculate a 10% PWM output cycle? What happens if you fail the exam? You have to pay another $30. This guide will assist you with the knowledge, tips, tools and exercises you will need to approve the Arduino Fundamentals exam and obtain all those exciting Arduino jobs.