> For the complete documentation index, see [llms.txt](https://blog.cweihang.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://blog.cweihang.io/note/raspbian.md).
# 树莓派相关
## 踩坑日志
* 树莓派录音，存在多个麦克风时，通过 plughw x:0指定使用哪个麦克风
```
sudo arecord -D "plughw:x,0" -d 5 tmp.wav
```
需要查看麦克风对应的序号，内置的声卡x=0，列表中第一个x=1,第二个x=2，依次类推
```
$pi@raspberry-pi: sudo arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: U0x46d0x825 [USB Device 0x46d:0x825], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
```
* 通过noobs安装raspbian的时候，千万不要联网！不要连wifi也不要插网线，否则会从网上重新下载镜像，超级慢！本来6.3MB/s的事情变成200kB/s
* [树莓派3B+上RTL8188CUS无线网卡启用monitor模式](/note/raspbian/rtlwifi.md)
* 树莓派开启telnet
```
sudo apt-get install telnet
sudo apt-get install telnetd
```
* 树莓派安装opencv
make -j4一步到99%的时候可能会因为树莓派温度过高卡住，各种反应迟钝，可以暂停（断电也行），不要开四线程，直接make，后边的时间不会特别长。
## 树莓派开发实战
> Simon Monk著 人民邮电出版社
### 与ubuntu不同的命令
* rasp-config：各种配置
### Tips
* 当前最新版本：树莓派3B型
* P3 保护壳：防止短路
* P4 电源：推荐1.5A至2A的
* P6 系统：推荐Raspbian
* P6 sd卡放/目录，U盘放home目录
* P7 NOOBS刷系统（FAT32）
* P10 有源USB集线器
## Reference
*
*
*
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