Line patrol, ambient light, LED lights, ultrasonic interface, servo interface, buzzer, I2C interface, mechanical expansion screw hole, etc. ... full-featured, highly expandable. Learning Target: Learn to read the key assignments of infrared, so that later can be flexible use of these data. This book provides a cost-efficient and fun way for primary and secondary school students to learn programming. The courses guide them to explore how to control a robot car Maqueen by coding, during which they will get to know the basics of robotics. Maqueen is a mini robot car intensively designed for STEAM education, small but powerful. It is developed based on the popular micro:bit board. Children can code Maqueen to play, learn and create so as to enhance their analytical and creative thinking skills, which is precisely what the original intention of STEAM education is. Equipped with 𝗧𝗪𝗢 𝗟𝗜-𝗣𝗢 𝟳.𝟰𝗩 𝟭𝟬𝟬𝟬𝗺𝗔𝗵 𝗥𝗘𝗖𝗛𝗔𝗥𝗚𝗘𝗔𝗕𝗟𝗘 𝗕𝗔𝗧𝗧𝗘𝗥𝗜𝗘𝗦 and a special 𝗗𝗢𝗨𝗕𝗟𝗘 𝗕𝗔𝗧𝗧𝗘𝗥𝗬 𝗖𝗢𝗡𝗡𝗘𝗖𝗧𝗢𝗥, the LAEGENDARY high speed remote control cars for boys and adults will run for up to 40+ minutes at a time. 𝗗𝗢𝗡’𝗧 𝗦𝗧𝗢𝗣 𝗧𝗛𝗘 𝗙𝗨𝗡 Effect: Press any key on the IR remote controller, the key value that corresponds to the pressed key will be displayed on the LED matrix (show the last two digits of key value in decimal).

Learning Target: Learn to read the distance of ultrasound, so that later can be flexible use of these data. The key assignments in the following table are in hexadecimal. In this product, we read the last two digits of the key assignments and automatically convert them to decimal data.Upload error? For uploading to the device, you need to switch the code window to the "Auto Generate" window. This book is composed of 20 teaching cases, including some classic games like Catching Apple, Cat and Mouse, etc, and projects related to life scenes like Obstacle Avoidance Maqueen, Research and Rescue Maqueen. Each case is designed based on teaching practices. It aims to inspire all children to participate in programming and pave the path for them to further develop and create. Effect: The ultrasonic sensor constantly detect the distance between the Maqueen and obstacle ahead, if it is smaller then 30cm, Maqueen randomly turns left or right to avoid the obstacle.

Effect: The left and right LEDs flash alternately at an interval of 0.5 second. Meanwhile, the buzzer makes two different tones with the flashing frequency. Perhaps the battery is dead, and it is recommended to replace it with a fully charged one. When the battery voltage is lower than 2V, the LED on the board and other functions can work normally, but the motor can’t rotate due to insufficient power.Effect: The RGB ambient light at the bottom of the Maqueen shows a variety of colors and presents a gradient effect.

After installing a battery in the car, the motor still can’t be controlled to rotate by burning program while the power light is on? Effect: Detect the distance between the sensor and obstacle ahead, and display the data on the LED Matrix (unit: cm). Thanks to the easy-to-use pistol-like 𝟮.𝟰𝗚𝗛𝗭 𝗥𝗔𝗗𝗜𝗢 𝗥𝗘𝗠𝗢𝗧𝗘 𝗖𝗢𝗡𝗧𝗥𝗢𝗟𝗟𝗘𝗥, with 2 speed modes (𝗟𝗢𝗪 𝗦𝗣𝗘𝗘𝗗 for learning and smaller areas and 𝗛𝗜𝗚𝗛 𝗦𝗣𝗘𝗘𝗗 for racing and larger areas,) our fast rc cars for kids and adults can be easily controlled within a range up to 250 feetA constraint condition should be added for test barrier, that is, filter out the data when the distance is not 0 or less than 5. You can also add 100-millisecond delay to prevent multiple reflections.

Effect: As the flashlight illuminates the LEDs on Maqueen, the vehicle starts to move forward. The brighter the light is, the faster Maqueen moves.Programming Method: Makecode graphical programming, Mind graphical programming (based on Scratch 3.0)