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App Inventor 2 IoT 参考文档 · App Inventor 2 中文网
...：经典蓝牙(SPP)，低功耗蓝牙(BLE)，WIFI，物联网，MQTT，ESP32，Ardruino等相关硬件控制方法。
【BLE中文文档】App Inventor 2 低功耗蓝牙 BlueToothLE 拓展
【科普】低功耗蓝牙(BLE) 和 经典蓝牙(SPP) 的区别
【BLE通用教程】App Inventor 2 ...
App Inventor 2 Encrypt.Security 安全性扩展：MD5哈希，SHA1和SHA256哈希...
...e[布尔值]），这意味着结果是大写或不是。返回一个包含32个字符（大写或小写）的搅拌器。
SHA256
SHA256散列一个字符串。输入一个字符串，它也将返回一个字符串。
SHA1
SHA1散列一个字符串。输入一个字符串，一个布尔值...
[SOLVED] Can't send payload > 23bytes(MTU setted to 128bytes) - #9 by ...
...d trying to send big strings, like 128bytes from the app to my hardware(ESP32).
From the app side I have a text box that is sending the string to ESP32, all working except when I try to send strings over 23bytes. Ok, I read some topics here and tried to apply those solutions but no success yet.
From...
AI2 SideBar Extension
...tween the icon and the text for the SideBar item. The default setting is 32 DIP. SidebarWidthPercentage Specifies the width of the SideBar as a percentage of the display width. Valid values are 30%.. 90%. The default is 80%. SwipeDetectorWidth Specifies the width of the SwipeDetecto...
App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网
...的。shortFloat 参数指示浮点数是 16 位半精度浮点数还是 32 位单精度浮点数。读取浮点数后，将触发 FloatsReceived 事件。
参数:
serviceUuid (text) —
在读取或注册调用中传递的服务UUID。
characteristicUuid (text) —
...