Arduino starter kit project 9
Arduino Projects Book by Scott FitzgeraldLibrarian note: This book cannot be sold separately from The Arduino Starter Kit.
Arduino helps you make things that interact with you. Whether youre a rocket scientist or a poet, whether youre ten years old or ninety, we want to make it possible for you to build great projects using computers and electronics.
The parts in this kit and the projects explained here form the skeleton of your projects. Arduino can make your projects responsive. Its up to you to make them beautiful.
Arduino Project 08 - Digital Hourglass
What are you looking for?
In this project, we made a motorized pinwheel. In other words, we wanted a motor to spin. To solve it, we used a battery of 9V. In order to achieve it, we needed to use a new element: a transistor. This is because when the motor receives electricity, a magnetic field is generated. In consequence, voltage is created in the opposite direction that is conducted to the motor. It is called back voltage.
In simple terms, when the sensor detects light, its resistance changes. The stronger light in the surrounding environment, the lower the resistance value the photo diode will read. By reading the photo diode's resistance value, we can work out the ambient lighting in an environment. The photo diode provided in the starter kit is a typical light sensor. In this arduino tutorial, we will make an automatic light that can adjust itself according to the ambient lighting around it.
Arduino Starter Kit: Project 9. Controlling motors with an Arduino is more complicated than just controlling LEDs for a couple of reasons. However, motors make it possible to move physical things, making your projectsmuch more exciting. Moving things takes a lot of energy. Motors typically require more current thanthe Arduino can provide.