blocks|key|2094784|text|常见错误，解决方法如下：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2094785|1-拔下Arduino|2094786|2-上传代码，不将Arduino连接到PC|2094787|3-重新连接Arduino|2094788|4-上传代码到Arduino|2094789|祝好运!|2094790|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|P|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|Q|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|M|$]]

Common error, here is the solution:

1 - Unplug the Arduino

2 - Upload code with no Arduino connected to PC

3 - Reconnect Arduino

4 - Upload code to the Arduino

Good luck!

blocks|key|2947018|text|如果您在Linux上，只需将当前用户设置为属于“拨号”组，即允许成员访问端口的组。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2947019|运行以下命令：|2947020|sudo+adduser+yourUserName+dialout|code-block|syntax|javascript|2947021|然后重新登录才能生效|2947022|(Ubuntu+18.04)|2947023|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

If you are on Linux,
just set current user to belong to "dialout" group which is the one who members are allowed to access ports. 

Run following:

<pre><code>sudo adduser yourUserName dialout
</code></pre>

then relog to take effect

(Ubuntu 18.04)

blocks|key|181307|text|从终端：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|181308|ls+-l+/dev/ttyUSB*
#+or:
ls+-l+/dev/ttyACM*|code-block|syntax|javascript|181309|从结果中获取组名：|181310|crw-rw----+1+root+uucp+188,+0++5+apr+23.01+ttyUSB0
#+or:
crw-rw----+1+root+dialout+188,+0++5+apr+23.01+ttyACM0|181311|将您的用户名添加到组中：|181312|usermod+-a+-G+uucp+username
#+or:
usermod+-a+-G+dialout+username|181313|注销并重新登录以使此更改生效。|181314|来源：https://playground.arduino.cc/Linux/All/#Permission|offset|length|181315|entityMap|0|LINK|mutability|MUTABLE|url|https://playground.arduino.cc/Linux/All/#Permission^0|0|0|0|0|0|0|0|3|1F|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|14|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|16|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|17|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|18|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|19|8|@]|9|@$S|1A|T|1B|1|1C]]|A|$]]|$1|U|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11]]]]

From terminal:
<pre class="lang-sh prettyprint-override"><code>ls -l /dev/ttyUSB*
# or:
ls -l /dev/ttyACM*
</code></pre>
Get the groupname from the result:
<pre class="lang-sh prettyprint-override"><code>crw-rw---- 1 root uucp 188, 0 5 apr 23.01 ttyUSB0
# or:
crw-rw---- 1 root dialout 188, 0 5 apr 23.01 ttyACM0
</code></pre>
Add your username to the group:
<pre class="lang-sh prettyprint-override"><code>usermod -a -G uucp username
# or:
usermod -a -G dialout username
</code></pre>
Log out and in again for this change to take effect.
Source: <a href="https://playground.arduino.cc/Linux/All/#Permission" rel="nofollow noreferrer">https://playground.arduino.cc/Linux/All/#Permission</a>

blocks|key|2094859|text|可能需要CH340驱动程序。一些CH34X_Driver_V3.4_Windows.zip操作系统使用CH340控制器查找并安装Arduinos|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2094860|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

USB may need CH340 driver.
Some Arduinos use the CH340 controller
Find and install the CH34X_Driver_V3.4_Windows.zip

blocks|key|183435|text|在这台计算机上右击，转到管理，设备管理器，com，找到Arduino的端口，然后转到工具，在端口中选择com|type|unstyled|depth|inlineStyleRanges|entityRanges|data|183436|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

click right on this computer, go to management, device manager, com, find the port of Arduino, then go to tools and in port select the com

blocks|key|5060886|text|我也有COM3错误，这解决了它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5060887|以管理员身份打开Arduino应用程序(以管理员身份运行应用程序，‘Shift%2BRightclick’)。|5060888|我仍然必须在没有连接Arduino的情况下上传，然后连接并上传。|5060889|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

I had the COM3 error too and this fixed it.
Open the Arduino application as Administrator
(Shift+Rightclick the app, 'Run as administrator'). 
I still had to upload without the Arduino connected, then connect and upload.

blocks|key|181276|text|我也有同样的问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|181277|181278|如果您将VS+Code与Platform+IO配合使用，并将垃圾邮件串行监视器与配合使用，速度太快，则当您再次尝试上传时，将显示上述错误。解决这个问题的一种方法是按下电路板上的重置按钮，然后立即在VS+Code中按upload。当使用带有平台IO的VS代码并在监控时上传时，不要太快地向串行监视器发送垃圾邮件。|ordered-list-item|offset|length|style|BOLD|181279|181280|181281|如果您正在将CLion与Platform+IO配合使用，并且已通过打开了pio+device+monitor串行监控，则必须关闭它，然后上载，因为它是使用port.|CODE|181282|的|181283|entityMap^0|0|0|4|7|C|B|14|9|0|0|0|6|5|C|B|X|P|1Q|3|10|I|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|T|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|U|8|@$F|V|G|W|H|I]|$F|X|G|Y|H|I]|$F|Z|G|10|H|I]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|11|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|12|8|@]|9|@]|A|$]]|$1|L|3|M|5|E|7|13|8|@$F|14|G|15|H|I]|$F|16|G|17|H|I]|$F|18|G|19|H|I]|$F|1A|G|1B|H|I]|$F|1C|G|1D|H|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|1E|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]]|R|$]]

I had the same problem:
<ol>
<li>If you are using VS Code with Platform IO and you spam Serial Monitor with many message too fast, then when trying again to upload it will give you the above error. One way to solve it is to press the reset button on your board and immedietly after that to press upload in VS Code. Just don't spam the Serial Monitor too fast, when using VS Code with Platform IO and uploading while monitoring it.
</li>
<li>If you are using CLion with Platform IO and you have opened Serial Monitoring via <code>pio device monitor</code> then you must close it and then upload, because it is using the port.
</li>
</ol>

I get this error message when i try to upload code to my arduino. Does anyone know what is going on?
I have installed the proper drivers and it works fine. My port appears on the menu and it is the corresponent to the device.
bless

avrdude: ser_open(): can't open device "\\.\COM3": Access is denied

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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当我尝试将代码上传到我的arduino时，我收到了这个错误消息。有人知道这是怎么回事吗？我已经安装了合适的驱动程序，并且运行正常。我的端口出现在菜单上，它是设备的对应端口。保佑

问avrdude: ser_open()：无法打开设备"\\.\COM3"：访问被拒绝
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