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Arduino控制RGB三色LED灯实验、程序代码、连线图、仿真 - 创客硬件开发 - ...
RGB三色灯简介
RGB色彩模式包含红绿蓝三种，通过控制红（R）、绿(B)、蓝(G)三种颜色的变化使其相互叠加产生花式颜色。而其颜色值的输出是通过PWM来控制的。RGB三基色按照不同的比例相加合成混色称为相加混色，除相加混色法...
Error 908 - The permission SEND_SMS/RECEIVE_SMS has been denied. - App...
RECEIVE_MSG 这个必须真机测试，模拟器不支持，可以尝试在设置中开启短信权限，这个属于危险权限，没有请求这个权限的代码块。深入的技术细节待研究。。。
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2024/08/04 补充：
根...
QRCodeGenerator 拓展使用后，apk编译失败 - 用户反馈 - 清泛IT社区，为创新赋能！
QRCodeGenerator 拓展
用户反馈，使用这个拓展，apk编译会失败，删除这个拓展一切正常。
经调查：Caused by: com.android.tools.r8.internal.g: Type com.google.zxing.aztec.AztecDetectorResult is defined multiple times
这个是核心原因，应该这个类重复...
扒了一下源码，ESP8285接入App Inventor有4种玩法，第3种最香 - AI 助手 - ...
...sh版本。CPU一样（Tensilica L106 80/160MHz），WiFi一样（802.11 b/g/n），GPIO一样（17个），区别就一个：ESP8285把1MB Flash直接塞进芯片里了，省了外部SPI Flash。
这意味着ESP8266的代码在ESP8285上100%能跑，Arduino ESP8266 Core和ESP-IDF都直接兼容...
How to achieve code folding effects in Emacs?
Whats the best way to achieve something like code folding, or the type of cycling that org-mode uses. What would be the best solution in elisp to create this type of behavior?
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Are Swift variables atomic?
In Objective-C you have a distinction between atomic and nonatomic properties:
6 Answers
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Determining the size of an Android view at runtime
I am trying to apply an animation to a view in my Android app after my activity is created. To do this, I need to determine the current size of the view, and then set up an animation to scale from the current size to the new size. This part must be done at runtime, since the view scales to differe...
“Full screen”
When I use the following code to create an iframe:
10 Answers
10
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Guava: Why is there no Lists.filter() function?
Is there a reason there's
5 Answers
5
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Are Databases and Functional Programming at odds?
I've been a web developer for some time now, and have recently started learning some functional programming. Like others, I've had some significant trouble apply many of these concepts to my professional work. For me, the primary reason for this is I see a conflict between between FP's goal of rem...