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Arduino 101 实验07 - 接近传感器,做一个非接触开关 · App Inventor 2 中文网
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用时
约 30 分钟
前置
实验05:光照传感器
改编自 MIT 官方教程 App Inventor + IoT: Proximity Sensor。
完成品工程:Arduino101ProximitySensor.aia
一、器材清单
器材
数...
Arduino 101 实验10 - 舵机角度控制 · App Inventor 2 中文网
...,舵机臂精确转到对应角度(0~180°)。再把它接上实验05 的光照数据,
就是一个指针式光照仪表。
电机是”转多快”,舵机是”转到哪” —— 机械臂、云台、开关阀门都靠它。
项目
说明
难...
Remove background drawable programmatically in Android
...Abdollah Zaki
2,93844 gold badges4040 silver badges5050 bronze badges
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How can I convert String[] to ArrayList [duplicate]
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answered Apr 19 '12 at 15:05
ScottScott
8,89666 gold badges4848 silver badges7878 bronze badges
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Iterating over all the keys of a map
...s
– Brian Leishman
Apr 23 '19 at 14:05
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How to set .net Framework 4.5 version in IIS 7 application pool
...ion.
– Gene Reddick
Mar 4 '12 at 23:05
2
I have a 4.5 application pool in IIS after installing Vi...
Fastest hash for non-cryptographic uses?
...9339a80
xor: 0.65218 119
xor2: 0.29301 134217728
add: 0.57841 1105
And the code used to generate this is:
$loops = 100000;
$str = "ana are mere";
echo "<pre>";
$tss = microtime(true);
for($i=0; $i<$loops; $i++){
$x = crc32($str);
}
$tse = microtime(true);
echo "\n...
UIWebView background is set to Clear Color, but it is not transparent
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– Justin Anderson
Sep 30 '12 at 15:05
1
I know the question was for iOS, but if for OSX, this qu...
How to change background color in the Notepad++ text editor?
...nguages...
– Xerus
Sep 11 '17 at 18:05
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