Traffic Lights By Angus_Yin in CircuitsArduino201Introduction: Traffic LightsBy Angus_YinFollowMore by the author:材料:你需要3個LED燈(紅黃綠各一)4條線4個電阻Step 1: 程式複製這個網址的程式https://create.arduino.cc/editor/angus_yin/e6d0add...Step 2: 電路只要按照這個電路接就好了。提醒:LED 的短腳要接在電阻後面。Step 3: 包裝可以用紙箱稍微包裝