【ラズパイDIY講座】ラズパイゼロで作る監視カメラ① 〜 ラズパイ側から画像配信してみる

            $ sudo raspi-config
        

            $ ls /dev/ | grep video
video0 #👈カメラモジュール
video10
#...
        

            $ vcgencmd get_camera
supported=1 detected=1
        

            $ sudo raspistill -o 1.jpg
        

            $ mkdir tmp
$ scp -P 12345 raspi@192.168.0.123:/home/raspi/1.jpg tmp/
$ ls tmp/
1.jpg
        

            $ curl http://www.linux-projects.org/listing/uv4l_repo/lpkey.asc | sudo apt-key add -
gpg: no valid OpenPGP data found.
        

            $ wget http://www.linux-projects.org/listing/uv4l_repo/lpkey.asc
$ sudo apt-key add lpkey.asc
OK
        

            $ echo 'deb http://www.linux-projects.org/listing/uv4l_repo/raspbian/stretch stretch main' | sudo tee -a /etc/apt/sources.list
        

            $ sudo nano /etc/apt/sources.list
#...追加👇
deb http://www.linux-projects.org/listing/uv4l_repo/raspbian/stretch stretch main
        

            $ sudo apt-get update
$ sudo apt-get install uv4l uv4l-server uv4l-raspicam
        

            #Raspberry Pi 2, 3 or later
#$ sudo apt-get install uv4l-webrtc
#Raspberry Pi 1, Compute Module 1, Zero or Zero W (Wireless)
$ sudo apt-get install uv4l-webrtc-armv6
        

            $ uv4l --driver raspicam --auto-video_nr --encoding h264 --width 320 --height 240 --server-option '--port=8080' --enable-server on
<notice> [core] Trying to loading driver 'raspicam' from built-in drivers...
<notice> [core] Loading driver 'raspicam' from external plug-in's...
<notice> [driver] Dual Raspicam & TC358743 Video4Linux2 Driver v1.9.76 built Apr 10 2021
<notice> [driver] Detected camera imx219, 3280x2464
<notice> [driver] Selected format: 320x240, encoding: h264, H264 Video Compression
<notice> [driver] Framerate max. 30 fps
<notice> [driver] H264 costant bitrate: 8000000
<notice> [core] Device detected!
<notice> [core] Registering device node /dev/video0
        

            $ sudo pkill uv4l
        

            #パッケージの取得 ※ラズパイゼロ > armv6
$ wget https://golang.org/dl/go1.16.5.linux-armv6l.tar.gz
#今回は例ではパッケージの展開先はデフォルト
$ sudo tar -C /usr/local -xzf go1.16.5.linux-armv6l.tar.gz
#インストール確認
$ ls -l /usr/local/go
$ cat /usr/local/go/VERSION
go1.16.5
        

            $ nano ~/.bashrc
#...GoのPATHを通すためファイル末尾に以下を追記
export PATH=$PATH:/usr/local/go/bin

#パスの有効化
$ source .bashrc
#パスの確認
$ which go
/usr/local/go/bin/go
        

            $ sudo apt-get install git
$ git clone https://github.com/FiloSottile/mkcert && cd mkcert
$ go build -ldflags "-X main.Version=$(git describe --tags)"
$ ./mkcert --version
v1.4.3-1-g0a3190b
        

            $ sudo mkdir /usr/local/mkcert && sudo mkdir /usr/local/mkcert/bin
$ sudo cp mkcert /usr/local/mkcert/bin/

$ nano ~/.bashrc
#...mkcertのPATHを通すためファイル末尾に以下を追記
export PATH=$PATH:/usr/local/mkcert/bin

#パスの有効化
$ source .bashrc
#パスの確認
$ which mkcert
/usr/local/mkcert/bin/mkcert
        

            $ sudo apt install libnss3-tools
$ mkcert -install
Created a new local CA 💥
The local CA is now installed in the system trust store! ⚡️

$ mkcert localhost 127.0.0.1
Created a new certificate valid for the following names 📜
 - "localhost"
 - "127.0.0.1"

The certificate is at "./localhost+1.pem" and the key at "./localhost+1-key.pem" ✅

It will expire on 27 September 2023 🗓

$ ls
localhost+1-key.pem  localhost+1.pem
        

            $ mv localhost+1-key.pem server.key
$ mv localhost+1.pem server.crt
$ ls
server.crt  server.key
        

            $ uv4l --driver raspicam --auto-video_nr --encoding h264 \
    --width 320 --height 240 \
    --server-option '--port=4300' \
    --server-option '--use-ssl=yes' \
    --server-option '--ssl-private-key-file=/home/user/server.key' \
    --server-option '--ssl-certificate-file=/home/user/server.crt' \
    --enable-server on
        

            $ sudo nano /etc/modules

#...中略
#👇V4L2ドライバを追加
bcm2835-v4l2
        

            $ v4l2-ctl --list-devices
bcm2835-codec-decode (platform:bcm2835-codec):
    /dev/video10
    /dev/video11
    /dev/video12

bcm2835-isp (platform:bcm2835-isp):
    /dev/video13
    /dev/video14
    /dev/video15
    /dev/video16

mmal service 16.1 (platform:bcm2835-v4l2-0):
    /dev/video0
        

            mknod /dev/video0 c 81 0
chmod 666 /dev/video0
chown root.video /dev/video0
        

            $ uv4l --external-driver --device-name=video0 \
    --auto-video_nr --encoding h264 \
    --width 320 --height 240 \
    --server-option '--port=4300' \
    --server-option '--use-ssl=yes' \
    --server-option '--ssl-private-key-file=/home/user/server.key' \
    --server-option '--ssl-certificate-file=/home/user/server.crt' \
    --enable-server on