elecfreaks

In previous chapters, we have talked more about how to use code to do shaping instead of knowledge points about color. In this chapter, we are going to explore this aspect of knowledge deeper. Color, in certain aspect, has surpassed human intuition. Various beautiful colors we seen by our naked eyes are actually consisted of same components. Only with the three light colors of red, green and blue, we can create all colors that can be seen by human eyes through mixture. Mobile screens and computer screens you currently seen are created at the basis of this principle. Red, green and blue are called the three original colors of light. Through the ratio of the three elements, we can assure a certain color. This method of description is also called RGB mode. Among it, red is R, green is G and blue is B. Except for RGB mode, there is another mode called CMYK mode. It is usually combined with printing. In printing, there is three original colors too. However, it is different

Introduction Most of time the cars we made can only run on the surface of the ground. Today we are going to create a hovercraft, which runs both in the water and on the ground, or even in the air. We use two motors to blow air underneath to support the hovercraft body and two motors in the end to control its moving directions. Tools & Materials needed: 2 x  Micro:bit Board 1 x  DIY Soldering Kit ELECFREAKS Joystick:bit for Micro:bit 1 x  ELECFREAKS Motor:bit for Micro:bit 4 x Hollow Cup Motor 2 x Positive Propeller 2 x Negative Propeller 1 x 7.4V Li battery 1 x 3.7V Battery 1 x Foam board 1 x Glue Procedure: Step 1: Cut Foam Board Step 2: Fix two motors in the center of the hovercraft body. (Because motors will generate heat, so you cannot use hot melting glue to fix motors.) In order to reduce hull spinning by itself, we have used a positive propeller and a negative propeller to make the two motor rotate in different directions.