若您覺得文章寫得不錯，請點選文章上的廣告，來支持小編，謝謝。 If you like this post, please click the ads on the blog or buy me a coffee. Thank you very much. 本文將使用TinkerCAD Circuits來示範超音感測器 HC-SR04(Ultrasonic sensor)的應用：「避障自走車」。讀者也可參考本部落格的其他超音感測器的應用文章 Ultrasonic 倒車雷達(Parking sensor simulation) Ultrasonic 自動照明 This tutorial uses a HC-SR04 ultrasonic distance sensor to do an obstacle avoidance car. Before assembling the hardware, the simulation could be done with TinkerCAD circuits. 材料(Materials)： 1. Arduino UNO R3 板子 x 1 2. 光感測器模組 HC-SR04 ultrasonic distance sensor x 1 3. 直流馬達 DC motor x 2 4. 杜邦線 jumper wire x 8 5. 麵包板 small breadboard x 1 電路(Circuit)： Trig pin is connected to Arduino UNO pin 12. Echo pin is connected to Arduino UNO pin 13. One DC motor is connected to Arduino UNO pin 5 and pin 6. The other DC motor is connected to Arduino UNO pin 10 and pin 11. 程式碼(The Code)： 示範影片(Demo Video)： 範例連結(Example Link)： https://www.tinkercad.com/things/8U8fwcfgTbf