App Inventor #4 無線搖控 ESP32-CAM APP (Part 1)

 大家好, 歡迎收看本週的Weekend project with Stonez56。 本周要進行的是 App Inventor 第4集 - “無線搖控 ESP32-CAM APP Part 1”! 這個是一個專門為初學者來開發的一個系列, 所以會講的比較詳細, 相信各位只要仔細收看內容並進行實作, 一定會收獲滿滿滿。


因內容較多, 本影片分為上, 下兩集. 上集為 UI 界面設計, 下集為 App Inventor程式設計. 


上次為大家示範了如何使用HTML + CSS + Javascript來寫網頁程式(Arduino #35  https://youtu.be/ECHBRdtV-yw), 利用網頁版的MQTT來遠端搖控ESP32 , 收到了不錯的回響.

今天我們使用 App Inventor 2來開發遠端搖控的 APP來取代網頁版本. 在ESP32程式的撰寫不需做任何的改變, 因為只要 MQTT Topic 一樣, APP inventor 就可以發佈訊息到ESP32了! 超方便的!


App Inventor 使用 WebView 想串流影像時, 會出現: header fields are too long for the server to interpret. 這問題會在下集時, 跟各位說明. 


另外, 針對 ESP32 C++上的程式說明, 請看 Arduino #35  https://youtu.be/ECHBRdtV-yw


好, 那我們就開始吧今天的練習吧~



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