Raspberry Pi

Raspberry Pi 學習的參考網站

https://raspberrytips.com/

要將開機的圖檔換掉

直接換 /usr/share/plymouth/themes/pix/splash.png 檔案就可以了。

How remove the lightning bulb(閃電icon)

to remove lightning bulb: add "avoid_warnings=1" to /boot/config.txt

查看 Raspberry Pi 的 CPU 溫度、運行速度與電壓等資訊

https://blog.gtwang.org/iot/raspberry-pi-vcgencmd-hardware-information/

查詢記憶體ram的大小

free -h // Mem 3.6Gi

htop // Mem 3.64G

Mounting USB disk

https://www.raspberrypi.org/documentation/configuration/external-storage.md

sudo blkid

sudo mkdir /mnt/mydisk

sudo mount /dev/sda1 /mnt/mydisk

ls /mnt/mydisk

格式化 sudo mkfs -t ext4 /dev/sdb

unmount

sudo umount /mnt/mydisk

改mount 外加磁碟的名字

That depends on what file system they use. If they are ext2/3/4 you can use e2label or if FAT32 then dosfslabel e.g.

sudo e2label /dev/sda1 MyNewLabel

sudo dosfslabel /dev/sda1 MyNewLabel

關機小開關

sudo nano /boot/config.txt

dtoverlay=gpio-shutdown,gpio_pin=21,active_low=1,gpio_pull=up 在最後一行加入這一個文字。

查詢版本

uname -a 查詢 kernel 版本

/opt/vc/bin/vcgencmd version 查詢 firmware 版本

cat /proc/version 查詢更完整的 kernel 資料

如何在 Jessie Lite 上安裝視窗環境呢？只要用 sudo apt-get update 和 sudo apt-get install lxde 就可以將 LXDE 和相依的套件裝起來，大約會新裝 602 個套件共計 842MB。之後就可以用 startx 開始使用 GUI

run top -u root you'll get only root processes.

Disk Space, Memory Use, and CPU Load: du, df, free, and w 記憶體free -h，磁碟df -h，使用者w

Imager 備份 SD 卡

EtcherPortable download

Pi Power Tools https://github.com/Botspot/Pi-Power-Tools#img-mode 推薦使用，備份之後再擴容，不受記憶卡容量不同之限制

download & install

wget -O - https://raw.githubusercontent.com/Botspot/Pi-Power-Tools/master/update | bash

uninstall

sudo apt purge gparted yad systemd-container xserver-xephyr expect

rm -rf ${HOME}/Pi-Power-Tools ${HOME}/Pi-Power-Tools.old

rm ${HOME}/Desktop/ppt.desktop ${HOME}/.local/share/applications/ppt.desktop

SD Memory Card formatter

Win32DiskImager

Flash OS images to SD cards & USB drives, safely and easily.

image download

old version

https://www.raspberrypi.org/downloads/raspbian/

3.5 LCD Display image

Installing the Remote Desktop Server

In Linux

login root

sudo useradd -m jj

sudo passwd jj

sudo usermod john -g sudo

ip addr show

樹莓派（raspberry）啟用root 帳號

默認用戶是pi 密碼為raspberry

sudo passwd –unlock root

運用整個 SD Card 容量

sudo raspi-config

ip Address show

Raspberry Pi

ifconfig

PC

Advanced IP Scanner that can scan an entire network

Cell Phone

Network Analyzer

Mac OS

The Best WiFi Analyser For Mac (2019)

無線網路設定

修改 /etc/network/interfaces，請執行：

sudo nano /etc/network/interfaces

將裏頭的內容修改為：

auto lo

iface lo inet loopback

auto wlan0

iface wlan0 inet static

address 192.168.1.222

netmask 255.255.255.0

gateway 192.168.1.1

wpa-ssid 無線網路的名稱

wpa-psk 無線網路的密碼

修改完成以後，依序按下「Ctrl+X」、「Y」與「Enter」儲存檔案，接著修改 DNS Server 設定，因為我實際上運行時，預設的 DNS Server 設定沒有用，請執行：

nano /etc/resolv.conf

加入新的 DNS Server 設定，例如：

nameserver 8.8.8.8

nameserver 8.8.8.4

同樣依序按下「Ctrl+X」、「Y」與「Enter」儲存檔案，接著 sudo poweroff 關機，拔除電源與 USB 鍵盤，重新接上電源開機完成後，你就可以 SSH 至方才指定的 IP 位址，使用 pi 與自設的密碼登入。

安裝中文輸入 fcitx vs scim vs ibussudo

fcitx

sudo apt-get install fcitx-table-boshiamy (嘸蝦米）

sudo apt-get install fcitx-table-cangjie-big （倉頡大字集）

sudo apt-get install fcitx-table-zhengma-large （鄭碼大字集）

sudo apt-get install fcitx-table-wubi-large （五筆大字集）

sudo apt-get install fcitx-chewing （新酷音）

sudo apt-get install fcitx-sunpinyin （双拼）

sudo apt-get install fcitx-table-easy-big （輕鬆大詞庫）

sudo apt-get install fcitx-m17n

scim

sudo aptitude update

sudo aptitude install -y task-chinese-t-desktop

sudo nano /etc/default/keyboard

把將XKBLAYOUT=“gb “ 改為將XKBLAYOUT=”us”，再按 Ctrl + X 離開，重啟一次就會變回正常的鍵盤。

然後再於 Terminal 輸入：sudo aptitude install -y scim scim-tables-zh

那麼就安裝好中文輸入法，在偏好設定中＞ SCIM Input Method 進行設定。

其他的輸入法請參考

Chakra Linux 安裝 Fcitx 中文輸入法教學

安裝全部文鼎中文字型，可輸入以下指令：

$ sudo apt-get install fonts-arphic*

[cwTex圓體]

$ sudo apt-get install fonts-cwtex-yen

修改中文環境

nano /etc/default/locale

LC_ALL=zh_TW.UTF-8

change the SSH server port

sudo nano /etc/ssh/sshd_config

port 22 change to port 3391

sudo service sshd restart

遠端桌面連線

PuTTY xxx.xxx.xxx.xxx

login jj

su - root

sudo apt-get update

sudo apt-get install xrdp

orangepi pc 要用如下

sudo apt-get install xrdp tightvncserver

Setup Options

https://opensource.com/article/17/3/building-personal-web-server-raspberry-pi-3

sudo ifconfig

ssh pi@192.168.1.115

sudo apt-get install xrdp

建議使用 vnc 較好***

套件更新

將目前已經安裝的套件都先更新到最新。

sudo apt update

sudo apt upgrade

sudo apt-get install build-essential make gccg++ git-core

使用wget -O下载并以不同的文件名保存

wget -O wordpress.zip http://www.minjieren.com/download.aspx?id=1080

使用wget –limit -rate限速下载

wget --limit-rate=300k http://www.minjieren.com/wordpress-3.1-zh_CN.zip

Get file from FTP

wget --ftp-user=xxxx --ftp-password=xxxxx ftp://120.97.62.97/jj/mp3/*

timedatectl

sudo timedatectl set-time "2014-11-08 06:40:00"

sudo timedatectl set-timezone Asia/Taipei

sudo timedatectl set-ntp true

Sound Card setup

alsamixer

amixer help

amixer scontrols

amixer -c <card-number> set <control> <value> amixer -c 0 set Master 100% amixer -c 0 set Master mute

Systemd

/etc/systemd/system/talk.service

List services:

systemctl list-unit-files

Start service:

systemctl start {SERVICENAME}

Stop service:

systemctl stop {SERVICENAME}

Enable service:

systemctl enable {SERVICENAME}

Disable service:

systemctl disable {SERVICENAME}

curl

下載一個檔：

curl ftp://120.97.62.97/SleepAway.mp3 –u jj:jaxxsjxan -o *.mp3

上載一個檔：

curl –u name:passwd -T size.mp3 ftp://malu.me/mp3/

調整image 記憶體大小

df -h 看一下目前系統硬碟的使用情形

先用fdisk 擴大 ./ 的容量，再用resize2fs /dev/ssdxxxxxx

fdisk -l

Install Samba under Armbian or Raspbian

https://diyprojects.io/share-file-orange-pi-armbian-raspberry-pi-raspbian-samba/#.XbZzUegzaUk

install SMplayer

sudo apt install smplayer

orange pi install chromium

1. Add the following to /etc/apt/sources.list:

deb http://dl.google.com/linux/chrome/deb/ stable main

$ wget https://dl-ssl.google.com/linux/linux_signing_key.pub

$ sudo apt-key add linux_signing_key.pub

$ sudo apt-get update

$ sudo apt-get install chromium

安裝藍牙圖形設置菜單

sudo apt-get install bluetooth bluez blueman

sudo reboot

安裝Samba

sudo apt-get install samba samba-common-bin

mkdir /home/pi/shared

sudo nano /etc/samba/smb.conf

[pimylifeupshare]

path = /home/pi/shared

writeable=Yes

create mask=0777

directory mask=0777

public=no

sudo smbpasswd -a pi

sudo systemctl restart smbd

hostname -I

另一個選擇是將RaspberryPi 安裝 OpenMediaVault 變成 NAS

架設 SFTP 伺服器另一個方法是使用WinSCP(推薦)

sudo apt-get install vsftpd

sudo nano /etc/vsftpd.conf

replace with

anonymous_enable=NO

local_enable=YES

write_enable=YES

local_umask=022

chroot_local_user=YES

user_sub_token=$USER

local_root=/home/$USER/FTP

編輯完畢按 Ctrl+O (Enter) 存檔, 再按 Ctrl+X 跳出 Nano 即可.

mkdir -p /home/<user>/FTP/files

chmod a-w /home/<user>/FTP

sudo service vsftpd restart

如此就可以用 pi 帳號以port 22 之 sftp 連上樹莓派

如果要在登入 FTP 伺服器時直接進入 /var/www/html 目錄, 可以先建立一個使用者帳號例如 tony :

pi@raspberrypi:~ $ sudo useradd tony

pi@raspberrypi:~ $ sudo passwd tony

Enter new UNIX password:

Retype new UNIX password:

passwd: password updated successfully

然後用 usermod 指令更改其預設目錄 :

pi@raspberrypi:~ $ sudo usermod -d /var/www/html/tony tony

You have new mail in /var/mail/pi

這樣用 tony 這個帳號登入 FTP 伺服器時, 就會直接進入 /var/www/html/tony 這個目錄了.

service --status-all

Install FileZilla

sudo apt update

sudo apt install filezilla

架設 LAMP

Raspberry Pi 安裝LAMP(PHP 7.3)

How to install a web server on the Raspberry Pi (Apache + PHP + MySQL)

sudo apt update

sudo apt upgrade

sudo apt install apache2

sudo chown -R pi:www-data /var/www/html/

sudo chmod -R 770 /var/www/html/

sudo apt install php php-mbstring

sudo rm /var/www/html/index.html

echo "<?php phpinfo ();?>" > /var/www/html/index.php

sudo apt install mariadb-server php-mysql

sudo mysql --user=root 可以用此進入sql command

DROP USER 'root'@'localhost';

CREATE USER 'root'@'localhost' IDENTIFIED BY 'password';

GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION;

exit 離開 sql command

mysql --user=root --password=yourmysqlpassword 萬一有錯可以用這一個命令回到 sql command 來修改

sudo apt install phpmyadmin 選擇apache2 及 dbconfig-common 安裝時遇到選擇 no

sudo phpenmod mysqli

sudo /etc/init.d/apache2 restart

sudo ln -s /usr/share/phpmyadmin /var/www/html/phpmyadmin

http://127.0.0.1/phpmyadmin 在瀏覽器url中輸入

設置HDMI

R-Pi configuration file

sudo nano /boot/config.txt

hdmi_group=1

hdmi_mode=4

Press Control-x

Press y

Press [enter]

sudo reboot

查看可用模式

tvservice –m CEA

tvservice -s

display_rotate=0

display_rotate=1

display_rotate=2

display_rotate=3

0 is the normal configuration. 1 is 90 degrees. 2 is 180 degress. 3 is 270 degrees.

7 inch screen

# uncomment if hdmi display is not detected and composite is being output

hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)

hdmi_group=2

hdmi_mode=1

hdmi_mode=87

hdmi_cvt=800 480 60 6 0 0 0

max_usb_current=1

設置Audio

sudo raspi-config

Select Option 7 Advanced Options and press Enter, then select Option A4: Audio and press Enter

安裝Waveshare 3.5”LCD及安裝驅動程式

wget www.waveshare.com/w/upload/4/4b/LCD-show-161112.tar.gz

tar xvf LCD-show-161112.tar.gz

cd LCD-show

sudo ./LCD35-show

sudo ./LCD-hdmi 切換回HDMI

有關微雪的產品，提供一個教學的網站，可到以[微雪課堂] 取得相關資料

查看CPU溫度

cat /sys/class/thermal/thermal_zone0/temp

Raspberry Pi Camera 拍照

raspistill -o image.png

raspistill -vf -hf -o cam2.jpg Vertical Flip & Horizontal Flip

預覽指令：

raspistill -f (全螢幕預覽)

raspistill -t 10000 (預覽十秒參數單位為毫秒)

raspistill -p 0,0,100,100 (預覽視窗設定 x,y,w,h)

raspistill -f -op 100 (設定預覽視窗透明度參數範圍 0-255)

拍照指令：

raspistill -o test.jpg (輸出圖檔儲存路徑/檔案名稱)

raspistill -o test.jpg -hf(水平翻轉)

raspistill -o test.jpg -vf(垂直翻轉)

raspistill -o test.jpg -w 100 -h 100 (設定圖片大小寬高)

raspistill -o test.jpg -q (設定影像品質參數範圍 0-100)

錄影指令：

raspivid -o test.mp4

自動加檔案名字 camera.sh

#!/bin/bash

DATE=$(date +"%Y-%m-%d_%H%M")

raspistill -vf -hf -o /home/pi/camera/$DATE.jpg

chmod +x camera.sh

./camera.sh

另一個範例拍照 Script

vi ~/takeapic.sh

#!/bin/bash

# 5 second, rotate 180 degree, shutter 0.5s, filename YYYYMMDD_HHMMSS.jpg

raspistill -vf -hf -x -n -e jpg -ISO 800 -ex auto -awb fluorescent -q 100 -w 2560 -h 1440 -t 1 -ss 50000 -o /home/user/DCIM/`date +%Y%m%d_%H%M%S`.jpg

旋轉：180 度紀錄EXIF：是編碼：jpg感光度：800曝光模式：自動白平衡：螢光燈品質：100解析度：2560 x 1440拍照延遲：1秒快門：0.5s儲存位置：/home/user/DCIM/[日期_時間].jpg

錄影 Script

touch ~/takevideo.sh

chmod 511 ~/takevideo.sh

vi ~/takevideo.sh

raspivid -vf -hf -awb fluorescent -w 1920 -h 1080 -fps 30 -t 10000 -o /home/user/DCIM/`date +%Y%m%d_%H%M%S`.mp4

旋轉：180度白平衡：螢光燈解析度：1080p / 30fps錄影時間：10秒儲存路徑：/home/user/DCIM/[日期_時間].mp4

樹莓派相機、即時串流、Webcam

== 即時串流低延遲 Webcam (mJPEG) == 640 x 360 / 30fps ，畫面高速移動，CPU使用率約 0.62 (不到 1 core) 2018 四月份的系統檔之前才可用

# 安裝設定 golang

sudo apt install golang-1.6 git

export PATH=$PATH:/usr/lib/go-1.6/bin

export GOPATH=~/go

# 下載 mjpeg-server

mkdir ~/go

cd ~/go

git clone https://github.com/speps/grumpy-pi-mjpg.git

# 編譯 mjpeg-server

cd grumpy-pi-mjpg/

go build mjpg-server.go

# 啟動相機錄影，將流導向給 mjpeg-server

raspivid -vf -hf -cd MJPEG -w 640 -h 360 -fps 30 -t 0 -n -b 6000000 -o - | ./mjpg-server

# 觀看串流

http://[raspberry_IP]:8081

用Python庫picamera控制樹莓派攝像頭模組

匯入相關模組

import picamera

from time import sleep

初始化

camera = picamera.PiCamera()

捕獲影象

camera.capture(‘image.jpg’)

開啟預覽

camera.start_preview()

垂直翻轉

camera.vflip = True

水平翻轉

camera.hflip = True

控制攝像頭亮度

camera.brightness = 60

控制攝像頭錄影

camera.start_recording(‘video.h264’)

程式休眠，但攝像頭繼續工作

sleep(5)

停止錄影

camera.stop_recording()

USB Camera for raspberry Pi

對焦和測試：

電腦上使用USB攝像頭，調整焦距到最好的顯示效果

（驅動程式請往這裡下載：win7-USB-camera-software.rar）

拍攝影片：

sudo apt-get update

sudo apt-get install ffmpeg

ffmpeg -f video4linux2 -r 7 -s 640x480 -i /dev/video0 video0.avi

播放影片：

omxplayer -o hdmi video0.avi

拍照－安裝軟體：

sudo apt-get install fswebcam

拍照－抓取圖片：

fswebcam -r 640x480 image.jpg

安裝 tmux

sudo apt-get install tmux

tmux

按任何快捷鍵之前一定要先按 Ctrl + b 如說要水平分割出一個 pane，就要先按 Ctrl + b 再按 %

% 垂直分割

" 水平分割

o 交换窗格

x 关闭窗格

c 開新 window

n 切換到下一個 window

p 切換到前一個 window

PPTP VPN SERVER setup TCP port 1723

sudo apt-get update

sudo apt-get install pptpd

sudo nano /etc/pptpd.conf

Add to it:

localip 192.168.1.67

remoteip 192.168.1.200-250

sudo nano /etc/ppp/pptpd-options

ms-dns 8.8.8.8

sudo nano /etc/ppp/chap-secrets

greenterminal * password123 *

sudo service pptpd restart

sudo service pptpd status

sudo nano /etc/sysctl.conf

net.ipv4.ip_forward=1

sudo sysctl -p

sudo service pptpd restart

安裝 Docker

用30天來介紹和使用 Docker系列

要學習 Docker ，有三個重要的名稱一定要瞭解，包括：Image、Container及Repository。

• 映像檔(Image)：就是一個唯讀的模板。Docker 執行容器前需要本地存在對應的映像檔，如果映像檔不存在本地，Docker 會從映像檔倉庫下載。

• 容器(Container)：容器是獨立執行的一個或一組應用，以及它們的執行態環境，對應到虛擬機，類比執行一整套作業系統。Docker 的容器是從映像檔建立的執行實例，它可以被啟動、開始、停止、刪除。每個容器都是相互隔離的、保證安全的平台。

• 倉庫(Repository)：是集中存放映像檔檔案的場所。倉庫分為公開倉庫(Public)和私有倉庫(Private)兩種形式。官方提供 Docker Hub 作為映像檔登錄及註冊(Registry)，這是類似 Github 程式碼儲存服務。一個 Docker Registry 中可以包含多個倉庫(Repository)；每個倉庫可以包含多個標籤(Tag)；每個標籤對應一個映像檔。

curl -sSL https://get.docker.com | sh 安裝 Docker

sudo usermod -aG docker pi 將 pi 這個使用者帳號加入 docker 群組

docker search raspbian

開機時，自動執行 Docker：

$ sudo systemctl enable docker

• 重新開機後，手動執行 Docker daemon：

$ sudo systemctl start docker

或

$ sudo /etc/init.d/docker start

docker pull resin/rpi-raspbian

docker run resin/rpi-raspbian /bin/echo 'Hello world'

docker run -ti resin/rpi-raspbian

[Docker 指令]

搜尋 Docker Hub上可用的映像檔：

$ sudo docker search armhf

查詢 Docker上可用的映像檔：

$ sudo docker images

從倉庫取得所需要的映像檔。

$ sudo docker pull resin/rpi-raspbian

執行安裝映像檔

$ sudo docker run -ti resin/rpi-raspbian

-i 開啟標準輸出入(STDIN)

-t 配置一個虛擬終端機

移除本地端映像檔

$ sudo docker rmi -f resin/rpi-raspbian

** 注意 docker rm 命令是移除容器。

其他的指令

docker container ls --all

docker container ls

docker container kill [containerID]

也可以使用docker container run命令的--rm参数，在容器终止运行后自动删除容器文件。

docker container run --rm -p 8000:3000 -it koa-demo /bin/bash

-d：在后台运行

-p ：容器的80端口映射到127.0.0.2:8080

--rm：容器停止运行后，自动删除容器文件

--name：容器的名字为mynginx

type ctrl+d to exit the session

typing ctrl+p and ctrl+q keeps the container running but frees up your terminal

docker ps -a # 查看正在运行的容器

docker ps # 查看容器

docker stop nginx # 停止正在运行的容器

docker start nginx # 启动一个已经停止的容器

docker start nginx # 重启一个容器

docker rm nginx # 删除容器

docker image pull hello-world

docker container logs [containerID]

docker container exec -it [containerID] bash

docker container cp [containID]:[/path/to/file] .

Docker 安裝 Nginx Service ( Nginx 是一個 Web Server 的 service)

容器里面网页文件所在的目录/usr/share/nginx/html

容器里面配置文件所在的目录/etc/nginx

一、外部文件位置

$ mkdir nginx-docker-demo

$ cd nginx-docker-demo

然后，新建一个html子目录。

$ mkdir html

在这个子目录里面，放置一个index.html文件，内容如下。

<h1>Hello World</h1>

二、複製配置文件至容器外

把容器里面的 Nginx 配置文件拷贝到本地。

$ docker container cp mynginx:/etc/nginx .

上面命令的含义是，把mynginx容器的/etc/nginx拷贝到当前目录。不要漏掉最后那个点。

执行完成后，当前目录应该多出一个nginx子目录。然后，把这个子目录改名为conf。

$ mv nginx conf

三、設定啟動對映命令

docker container run --rm --name mynginx --volume "$PWD/html":/usr/share/nginx/html --volume "$PWD/conf":/etc/nginx -p 80:80 -d nginx

PHP-FPM

从 Dockerhub拉取 PHP-FPM 镜像

$ docker pull php:fpm

$ docker run --name php-fpm -p 9000:9000 -d php:fpm

把配置文件复制到本地：

$ cd ~/www

$ docker cp php-fpm:/usr/local/etc/php-fpm.d/www.conf www.conf

$ docker cp php-fpm:/usr/src/php/php.ini-production php.ini

打開 Browser 輸入 http://localhost

docker container stop nginx 容器终止

Nginx 容器教程

Apache 2.4 httpd

docker run -dit --name jj-web -p 80:80 -v /home/pi/Web/www/:/usr/local/apache2/htdocs/ httpd:2.4

使用 Docker 執行 python 的 gpio 控制 LED 燈

docker compose 安装

sudo pip3 install docker-compose

docker-compose version

DS18B20 sensor

DS18B20 Temperature Sensor With Python (Raspberry Pi)

送溫度資料至 ThingSpeak 的程式及控制GPIO17 輸出的繼電器

import sys

import RPi.GPIO as GPIO

import urllib.request

from time import sleep

temper2 = 0

GPIO.setmode(GPIO.BCM) # GPIO Numbers instead of board numbers

RELAIS_1_GPIO = 17

GPIO.setup(RELAIS_1_GPIO, GPIO.OUT) # GPIO Assign mode

def getSensorData():

tempfile = open("/sys/bus/w1/devices/28-0417000302ff/w1_slave")

thetext = tempfile.read()

tempfile.close()

tempdata = thetext.split("\n")[1].split(" ")[9]

temperature = float(tempdata[2:])

temperature = temperature / 1000

return (temperature)

# main() function

def main():

# use sys.argv if needed

baseURL = 'https://api.thingspeak.com/update?api_key=4ASVH9KA1AY2SDB3'

while True:

try:

temper2 = getSensorData()

print (temper2)

if (temper2 > 28) : GPIO.output(RELAIS_1_GPIO, GPIO.HIGH)

if (temper2 <27) : GPIO.output(RELAIS_1_GPIO, GPIO.LOW)

f = urllib.request.urlopen(baseURL + "&field1=%s" % (temper2))

print( f.read())

f.close()

sleep(60)

except:

print( 'exiting.')

break

# call main

if __name__ == '__main__':

main()

Show temp chart from ThingSpeak:

https://thingspeak.com/channels/776075/charts/1?bgcolor=%23ffffff&color=%23d62020&dynamic=true&results=60&type=line&update=15

ASPBERRY PI 3 MODEL B 與 1-WIRE DS18B20 之應用

Made a RPi desk clock as a means of learning Python

get CPU temprature vcgencmd measure_temp

3.5吋 LCD Full Screen 顯示 CPU 溫度

import pygame

### import RPi.GPIO as GPIO

import time

import datetime

pygame.init()

##### screen = pygame.display.set_mode((640, 480))

screen = pygame.display.set_mode((0, 0), pygame.FULLSCREEN)

##clock = pygame.time.Clock()

done = False

while not done:

tFile = open('/sys/class/thermal/thermal_zone0/temp')

temp = float(tFile.read())

tempC = temp/1000

font = pygame.font.SysFont("comicsansms", 48)

text = font.render( "CPU Temp: "+str(tempC), True, (0, 128, 0))

font = pygame.font.SysFont("comicsansms", 96)

text1 = font.render( str(datetime.datetime.now().strftime("%H:%M:%S")), True, (0, 128, 0))

for event in pygame.event.get():

if event.type == pygame.QUIT:

done = True

if event.type == pygame.KEYDOWN and event.key == pygame.K_ESCAPE:

done = True

screen.fill((255, 255, 255))

screen.blit(text1,

(240 - text1.get_width() // 2, 160 - text1.get_height() // 2 -50))

screen.blit(text,

(240 - text.get_width() // 2, 160 - text.get_height() // 2 + 50))

pygame.display.flip()

####clock.tick(2)

time.sleep(1)

startup.sh 開機時自動執行多個程式建議使用 crontab來啟動這個程式

#!/bin/bash

cd /home/pi/

/usr/bin/python3 /home/pi/send_ip_line.py

export GOOGLE_APPLICATION_CREDENTIALS="/home/pi/jjlab-speech-send-cc165e9881e4.json"

/usr/bin/python3 /home/pi/mqtt_google_say.py

send_ip_line.py 發送ip至你的LINE

### send ip to line send_ip_line.py

import socket

import requests

import subprocess

import os

#ssid = os.popen("netsh wlan show interfaces").read() # for windows use 取得 ssid

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

s.connect(("8.8.8.8", 80))

#print(s.getsockname()[0])

#ipaddress = os.popen("ifconfig wlan0 \

# | grep 'inet addr' \

# | awk -F: '{print $2}' \

# | awk '{print $1}'").read()

ssid = os.popen("iwconfig wlan0 \

| grep 'ESSID' \

| awk '{print $4}' \

| awk -F\\\" '{print $2}'").read()

# 使用 GET 方式下載普通網頁

message = "你的樹莓派位址是 "+s.getsockname()[0] +"你的ssid是 "+ssid

# 送line訊息給你

my_params = {'token': 'RqFM12eMY4yNPP3PAh8xykKee5cHZXVGZDgMrdddF3Px', 'message': message}

r = requests.get('http://3.114.197.59/test/line_notify.php', params = my_params)

s.close()

print(message)

#print("ssid: " + ssid)

#print("ipaddress: " + ipaddress)

Five Ways To Run a Program On Your Raspberry Pi At Startup

Method 2: .bashrc

sudo nano /home/pi/.bashrc

echo Running at boot

python3.7 ./jjspeechmqtt.py

Method 5: crontab 推薦這方法

sudo crontab -e

@reboot sudo python3 /home/pi/pi-rc522/pirc522/jjrfid.py >> /home/pi/log.txt 2>&1

or

@reboot sleep 20 ; /home/pi/startup.sh

starup.sh

#!/bin/bash

export GOOGLE_APPLICATION_CREDENTIALS="/home/pi/jjlab-speech-send-cc165e9881e4.json"

python3 jjspeechmqtt.py

crontab 固定時間的設定線上工具

# Example of job definition:

# .---------------- minute (0 - 59)

# | .------------- hour (0 - 23)

# | | .---------- day of month (1 - 31)

# | | | .------- month (1 - 12) OR jan,feb,mar,apr ...

# | | | | .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat

# | | | | |

# * * * * * user-name command to be execute

https://crontab.guru/

安裝 pyaudio

sudo apt-get install python3-pyaudio

安裝 Google 套件

pip3 install gcloud

pip3 install google-api-python-client

Adafruit_CircuitPython_NeoPixel

https://github.com/adafruit/Adafruit_CircuitPython_NeoPixel

sudo pip3 install rpi_ws281x adafruit-circuitpython-neopixel

Troubleshooting: If your LEDs only flicker erratically instead of performing a nice demo we need to make some edits to /boot/config.txt, execute:

sudo nano /boot/config.txt

and either uncomment or add the following lines:

hdmi_force_hotplug=1

hdmi_force_edid_audio=1

save, reboot, and reattempt to run strandtest.py as above.

# Simple test for NeoPixels on Raspberry Pi

import time

import board

import neopixel

# Choose an open pin connected to the Data In of the NeoPixel strip, i.e. board.D18

# NeoPixels must be connected to D10, D12, D18 or D21 to work.

pixel_pin = board.D18

# The number of NeoPixels

num_pixels = 8

# The order of the pixel colors - RGB or GRB. Some NeoPixels have red and green reversed!

# For RGBW NeoPixels, simply change the ORDER to RGBW or GRBW.

ORDER = neopixel.GRB

pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=0.2, auto_write=False,

pixel_order=ORDER)

def wheel(pos):

# Input a value 0 to 255 to get a color value.

# The colours are a transition r - g - b - back to r.

if pos < 0 or pos > 255:

r = g = b = 0

elif pos < 85:

r = int(pos * 3)

g = int(255 - pos*3)

b = 0

elif pos < 170:

pos -= 85

r = int(255 - pos*3)

g = 0

b = int(pos*3)

else:

pos -= 170

r = 0

g = int(pos*3)

b = int(255 - pos*3)

return (r, g, b) if ORDER == neopixel.RGB or ORDER == neopixel.GRB else (r, g, b, 0)

def rainbow_cycle(wait):

for j in range(255):

for i in range(num_pixels):

pixel_index = (i * 256 // num_pixels) + j

pixels[i] = wheel(pixel_index & 255)

pixels.show()

time.sleep(wait)

#while True:

# Comment this line out if you have RGBW/GRBW NeoPixels

pixels.fill((255, 0, 0))

# Uncomment this line if you have RGBW/GRBW NeoPixels

# pixels.fill((255, 0, 0, 0))

pixels.show()

time.sleep(1)

# Comment this line out if you have RGBW/GRBW NeoPixels

pixels.fill((0, 255, 0))

# Uncomment this line if you have RGBW/GRBW NeoPixels

# pixels.fill((0, 255, 0, 0))

pixels.show()

time.sleep(1)

# Comment this line out if you have RGBW/GRBW NeoPixels

pixels.fill((0, 0, 255))

# Uncomment this line if you have RGBW/GRBW NeoPixels

# pixels.fill((0, 0, 255, 0))

pixels.show()

time.sleep(1)

#rainbow_cycle(0.005) # rainbow cycle with 1ms delay per step

# Comment this line out if you have RGBW/GRBW NeoPixels

pixels.fill((0, 0, 0))

# Uncomment this line if you have RGBW/GRBW NeoPixels

# pixels.fill((0, 0, 255, 0))

pixels.show()

sound card select

sudo raspi-config select Jack or HDMI

cat /proc/asound/cards

sudo nano /etc/modules add

snd-usb-audio

sudo nano .asoundrc

pcm.!default {

type hw

card 0

}

ctl.!default {

type hw

card 0

}

sudo nano /boot/config.txt

# Enable audio (loads snd_bcm2835)

#dtparam=audio=on 禁能

Python-uinput

https://github.com/tuomasjjrasanen/python-uinput

cd /home/pi/py_switch

sudo modprobe uinput

sudo python switch.py

switch.py

import RPi.GPIO as GPIO

import time

import uinput

import os

GPIO.setmode(GPIO.BCM)

GPIO.setup(19, GPIO.IN, pull_up_down=GPIO.PUD_UP)

GPIO.setup(20, GPIO.IN, pull_up_down=GPIO.PUD_UP)

GPIO.setup(21, GPIO.IN, pull_up_down=GPIO.PUD_UP)

device = uinput.Device([

uinput.KEY_P,

uinput.KEY_N,

uinput.KEY_F5,

uinput.KEY_M,

uinput.KEY_A

])

view = 'm'

while True:

input_state_back = GPIO.input(19)

input_state_forward = GPIO.input(20)

input_state_multi = GPIO.input(21)

if input_state_back == False:

print('Button P Pressed')

device.emit_click(uinput.KEY_P)

time.sleep(0.5)

if input_state_forward == False:

print('Button N Pressed')

device.emit_click(uinput.KEY_N)

time.sleep(0.5)

if input_state_multi == False and input_state_back == False and input_state_forward == False:

print('All buttons pressed')

os.system('sudo reboot')

if input_state_multi == False:

start = time.time()

time.sleep(0.01)

while input_state_multi == False:

time.sleep(0.01)

print('Multibutton is pressed')

end = time.time()

multi_press_time = end-start

input_state_multi = GPIO.input(21)

if input_state_multi == True or multi_press_time > 5.5:

print('Button press in', multi_press_time)

break

if multi_press_time < 5:

if view == 'm':

device.emit_click(uinput.KEY_A)

view = 'a'

print('keypress A')

time.sleep(0.5)

elif view == 'a':

device.emit_click(uinput.KEY_M)

view = 'm'

print('keypress m')

time.sleep(0.5)

else:

print('Keypress: F5')

device.emit_click(uinput.KEY_F5)

time.sleep(0.5)

if input_state_multi == False and input_state_back == False and input_state_forward == False:

print('All buttons pressed')

os.system('sudo reboot')

RFID reader with python3

sudo nano /boot/config.txt

Add the following entry to the end of the file:

dtoverlay=spi-bcm2708

Install the SPI-Py library

git clone https://github.com/lthiery/SPI-Py

cd SPI-Py

sudo python3 setup.py install

Download the pi-rc522 files using

cd ~

git clone https://github.com/ondryaso/pi-rc522.git

cd pi-rc522

sudo python3 setup.py install

Basic code to read the RFID UID

The code below shows the steps required to check for a card and read the UID. The UID is made up of a list of 4 values which are printed on a single line.

#!/usr/bin/python3

import sys

sys.path.insert(0, "/home/pi/pi-rc522/ChipReader")

import rfid

import signal

import time

import RPi.GPIO as GPIO

import requests

rdr = rfid.RFID()

util = rdr.util()

util.debug = False

url="http://13.56.153.188/Switch/IOcontrol.php?command=toggle&device=6bDMRXov"

def buzzer():

GPIO.output(ledPin, True)

time.sleep(0.1)

GPIO.output(ledPin, False)

time.sleep(0.1)

GPIO.output(ledPin, True)

time.sleep(0.1)

GPIO.output(ledPin, False)

# Use physical pin numbers

GPIO.setmode(GPIO.BOARD)

# Set up header pin 12 (GPIO18) as an input

ledPin = 12

print ("Setup Pin 12 is OutPut...")

GPIO.setup(ledPin, GPIO.OUT)

while True:

#Request tag

(error, data) = rdr.request()

if not error:

print ("\nDetected")

(error, uid) = rdr.anticoll()

if not error:

#Print UID

print ("Card read UID: "+str(hex(uid[0]).lstrip("0x").rstrip("L"))+

"."+str(hex(uid[1]).lstrip("0x").rstrip("L"))+"."+str(hex(uid[2]).lstrip("0x").rstrip("L"))+

"."+str(hex(uid[3]).lstrip("0x").rstrip("L")))

buzzer()

r = requests.get(url)

time.sleep(1)

Copy the files inside pirc522 into your script's directory, Change the import name from "RFID" to rfid and chage it for the class call also (from "RFID.RFID()" to "rfid.RFID()", Then edit the rfid.py and change the import statement int the util function (at the end of program) from "from .util import RFIDUtil" to "from util import RFIDUtil"

OTA

store.txt 及更新的檔案 add to raspberry1(ID).zip

clock.py /home/pi/clock.py 檔案放置位置

test1.py /home/pi/test1.py

ota.py 檢查更新及下載解壓

import requests

import json

from time import sleep

import tempfile

import datetime

import os

import zipfile

import shutil

import time

##from concurrent.futures import ThreadPoolExecutor

import threading

ID = "raspberry1"

url="http://61.219.106.180/ota/raspberry/"

user = 'jj'

data_file = "Templates/download.zip"

def getfile():

# If the file exists, delete it

if os.path.isfile(data_file):

#os.remove('Templates/*.*')

shutil.rmtree('Templates/')

print('delete file in Temp')

os.mkdir('Templates/')

else:

print('no file in Temp')

#dowlad file

urlfile = url +ID +".zip"

print(urlfile)

r = requests.head(urlfile, allow_redirects=True)

if r.status_code == 200:

print ("file in url , Exists!")

r = requests.get(urlfile)

with open(data_file, "wb") as code:

code.write(r.content)

zip_ref = zipfile.ZipFile(data_file, 'r')

zip_ref.extractall('Templates/')

zip_ref.close()

r = requests.head('http://61.219.106.180/ota/ota_delete.php?delete_file='+ID+'.zip', allow_redirects=True)

print('delete file from url')

os.system('sudo reboot now')

if __name__ == '__main__':

getfile()

ota_boot.py 重新啟動搬移至正確位置

import requests

import json

from time import sleep

import tempfile

import datetime

import os

import zipfile

import shutil

import time

##from concurrent.futures import ThreadPoolExecutor

import threading

ID = "raspberry1"

url="http://61.219.106.180/ota/raspberry/"

user = 'jj'

data_file = "Templates/download.zip"

def move_location():

if os.path.isfile('Templates/store.txt'):

print('open store.txt')

f = open("Templates/store.txt", "r")

for x in f:

str = x.split( )

print(str[0])

shutil.move('Templates/'+str[0], str[1])

f.close()

#os.remove('Templates/*.*')

shutil.rmtree('Templates/')

print('delete file in Temp')

os.mkdir('Templates/')

os.system('sudo chmod 777 Templates')

if __name__ == '__main__':

move_location()

建立cups列印伺服器

sudo apt-get update

sudo apt-get upgrade

sudo apt-get install git cups wiringpi build-essential libcups2-dev libcupsimage2-dev python-serial python-pil python-unidecode system-config-printer

sudo usermod -a -G lpadmin pi

sudo nano /etc/cups/cupsd.conf

修改如下：

Listen your_host_name:631 -----------> Port 631

另外編輯以下區塊

Order allow,deny

Allow all #add this line

</location>

...

Order allow,deny

Allow all #add this line

</location>

重新啟動 CUPS server

sudo /etc/init.d/cups restart

接著就可以用打開瀏覽器以 http://192.168.0.xxx:631/ 的形式訪問 CUPS Web interface 了。

lpstat -p

SpliX is a set of CUPS printer drivers for SPL (Samsung Printer Language) printers.

sudo apt-get install printer-driver-splix

熱感式印表機

cd ~

git clone https://github.com/adafruit/zj-58

cd zj-58

make

sudo ./install

To set up this printer as the system default

sudo lpadmin -p ZJ-58 -E -v serial:/dev/serial0?baud=19200 -m zjiang/ZJ-58.ppd

sudo lpoptions -d ZJ-58

lp -d JJ_printer test.txt

sudo chmod a+rw /dev/usb/lp0

echo "Test Print 測試列印 " > /dev/usb/lp0

Printer Listings

http://www.openprinting.org/printers

https://www.cyut.edu.tw/~ckhung/b/gnu/printing.php

python 視覺化：用fig, ax = plt.subplots()在一個視窗繪製多個圖表

Install dlib on the Raspberry Pi

Install OpenCV 4 on your Raspberry Pi

RPM 與 Tarball 套件管理員

全螢幕打開及關閉browser

DISPLAY=:0 chromium-browser --kiosk http://61.219.106.180/test/FlipClock/examples/countdown-stop-callback.html

killall -KILL chromium-browse

Magic Mirror 2

https://magicmirror.builders/

Raspberry Pi to install MagicMirror²:

bash -c "$(curl -sL https://raw.githubusercontent.com/MichMich/MagicMirror/master/installers/raspberry.sh)"

cd MagicMirror/

npm install && npm start

npm start does not work via SSH. But you can use DISPLAY=:0 nohup npm start & instead.
you can use npm start dev which will start MM with Dev Tools enabled
To access toolbar menu when in mirror mode, hit ALT key.
To toggle the (web) Developer Tools from mirror mode, use CTRL-SHIFT-I or ALT and select View.
Ctrl-Q quit

/home/pi/MagicMirror/config/config.js language: "zh-tw" 改為中文

連接天氣，行事曆 config.js

{ module: "calendar", header: "JJ Calendar", position: "top_left", config: { calendars: [ { symbol: "calendar-check", url: "webcal://calendar.google.com/calendar/ical/egls0mo6rpnv3n8s%40group.calendar.google.com/private-90d4c9f3e5bdeabd99d256705ddf7d1e/basic.ics" } ] } }, { module: "compliments", position: "lower_third" }, { module: "currentweather", position: "top_right", config: { location: "Taipei", locationID: "1668341", //ID from http://bulk.openweathermap.org/sample/city.list.json.gz; unzip the gz file and find your city appid: "97e9128e6b88f4cc52ffd8be6a7" } }, { module: "weatherforecast", position: "top_right", header: "未來天氣", config: { location: "台北市", locationID: "1668341", //ID from http://bulk.openweathermap.org/sample/city.list.json.gz; unzip the gz file and find your city appid: "97e9128e6b85f4cc52ffd8be6a7" } },

修改 compliments.js

compliments: { anytime: [ "嗨! 有活力哦!!" ], morning: [ "早安你好，迎接美好的一天!!", "祝你有個美好的一天!!", "昨晚睡的還好吧!!" ], afternoon: [ "嗨好朋友你好 !!!", "下午來一杯咖啡和點心，休息一下!!", "你看起來精神很好哦!!" ], evening: [ "保持你的熱情與動力 !!", "你看起是如此熱情洋溢 !!", "感覺你真性感!!" ] },

新聞推播 config.js

feeds: [ { title: "中央社重點新聞", url: "http://feeds.feedburner.com/cnaFirstNews?format=xml" }

改變顯示字型大小 custom.css

.medium {

font-size: 40px;

line-height: 45px;

}

cd MagicMirror/DISPLAY=:0 nohup npm start &

Disabling the screensaver

1. (Please note, you will need the x11-xserver-utils package installed.)

sudo apt-get install x11-xserver-utils

edit /etc/xdg/lxsession/LXDE-pi/autostart:

//////////////////////////sudo nano /etc/xdg/lxsession/LXDE-pi/autostart///////

sudo nano .config/lxsession/LXDE-pi/autostart or

sudo nano /etc/xdg/lxsession/LXDE/autostart

Add the following lines:

@xset s noblank

@xset s off

@xset -dpms

@lxpanel --profile LXDE-pi

@pcmanfm --desktop --profile LXDE-pi

@chromium-browser --kiosk --disable-session-crashed-bubble --disable-infobars http://YOUR WEBSITE URL

2. Edit /etc/lightdm/lightdm.conf: 推薦這種方法

sudo nano /etc/lightdm/lightdm.conf

Add the following line below [SeatDefaults] (Please note, you may need to add the [SeatDefaults] section.)

[SeatDefaults]

xserver-command=X -s 0 -dpms

SET UP A RASPBERRY PI AS A Browser DISPLAY (KIOSK MODE)

https://cannotdisplay.com/solved-set-up-a-raspberry-pi-as-a-window-display-kiosk-mode/

install Kodi

sudo apt-get update -y

sudo apt-get install kodi

sudo apt-get install -y kodi-pvr-iptvsimple

https://redirector.googlevideo.com/api/manifest/hls_playlist/expire/1573383554/ei/IZnHXZ6HO5CTkwa1m7PoBw/ip/35.227.155.86/id/YFCNyUfbJyU.0/itag/96/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D137/hls_chunk_host/r4---sn-nx5e6nez.googlevideo.com/playlist_duration/30/manifest_duration/30/playlist_type/DVR/mm/44/mn/sn-nx5e6nez/ms/lva/mv/u/mvi/3/pl/20/dover/11/keepalive/yes/fexp/23842630/mt/1573361620/disable_polymer/true/sparams/expire,ei,ip,id,itag,source,requiressl,ratebypass,live,goi,sgoap,sgovp,playlist_duration,manifest_duration,playlist_type/sig/ALgxI2wwRgIhAJbx7pgbFCL3QsgQ_Figk-RIKjyIanf9lo9SWydCQzqPAiEAkOnSC_v40eHu6wmnY8lxygMqMzeRUF0rQV3E4ER3wB4%3D/lsparams/hls_chunk_host,mm,mn,ms,mv,mvi,pl/lsig/AHylml4wRAIgB2A2DlU3By6-5TSy5cB6JuGu9FktjdZCvNWLVPGq6MYCIC_yYLJSAGsu9ktrZvjiXSNNmTNZQR85bXgtWZFL0G8q/playlist/index.m3u8

Bluetooth

sudo apt-get install bluetooth libbluetooth-dev

sudo python3 -m pip install pybluez

import bluetoothtarget_name = "jjwalk1"target_address = Nonenearby_devices = bluetooth.discover_devices()for bdaddr in nearby_devices: if target_name == bluetooth.lookup_name( bdaddr ): target_address = bdaddr breakif target_address is not None: print ("found target bluetooth device with address "+ target_address)else: print ("could not find target bluetooth device nearby")

hcitool scan 可以掃描附近的藍芽裝置

hciconfig 確認藍牙裝置接收器已被啟動

sudo bluetoothctl 命令行上使用之 Bluetooth control application

scan on 掃描可用藍芽裝置

pair XX:XX:XX:XX:XX:XX 配對裝置

ls /dev/input 顯示已連接之裝置

cat /dev/input/eventX 讓我們使用以下命令從設備中打印出所有傳入數據（將eventX替換為設備代碼）它應該吐出一堆廢碼

python-evdev

sudo pip install evdev

python /usr/local/lib/python2.7/dist-packages/evdev/evtest.py 它用來測試及顯示搖桿的對應碼

python use evdev 抓取藍芽搖桿的動作及碼

#import evdevfrom evdev import InputDevice, categorize, ecodes
#creates object 'gamepad' to store the data#you can call it whatever you likegamepad = InputDevice('/dev/input/event5')
#button code variables (change to suit your device)aBtn = 164bBtn = 36xBtn = 35yBtn = 23
up = 115down = 114left = 165right = 163
start = 24select = 49
lTrig = 37rTrig = 50
#prints out device info at startprint(gamepad)
#loop and filter by event code and print the mapped labelfor event in gamepad.read_loop():    if event.type == ecodes.EV_KEY:        if event.value == 1:            if event.code == yBtn:                print("Y")            elif event.code == bBtn:                print("B")            elif event.code == aBtn:                print("A")            elif event.code == xBtn:                print("X")
            elif event.code == up:                print("up")            elif event.code == down:                print("down")            elif event.code == left:                print("left")            elif event.code == right:                print("right")
            elif event.code == start:                print("start")            elif event.code == select:                print("select")
            elif event.code == lTrig:                print("left bumper")            elif event.code == rTrig:                print("right bumper")

安裝RaspAP無線基地台

https://atceiling.blogspot.com/2020/03/raspberry-pi-64raspap.html

安裝 Mosquitto

apt-get install mosquitto

service mosquitto status

https://blog.gtwang.org/iot/raspberry-pi/raspberry-pi-mosquitto-mqtt-broker-iot-integration/

Setting environment variable for service

sudo nano /etc/profile

export GOOGLE_APPLICATION_CREDENTIALS="jjlab-speech-send-cc165e9881e4.json" (put this at the end of your file)

(saves the file)

Easy Raspberry Pi Based Slideshow 可作為互動式廣告看板

https://www.instructables.com/id/Easy-Raspberry-Pi-Based-ScreensaverSlideshow-for-E/

feh – a fast and light image viewer

sudo apt-get install feh

feh -Y -x -q -D 5 -B black -F -Z -z -r /media/

Here is the explanation of the parameters used in our reference command.

man feh

-Z Auto Zoom

-x Borderless

-F Fullscreen

-Y hide pointer

-B image background

-q quiet no error reporting

-z Randomise

-r Recursive search all folders in folders

-D Slide delay in seconds

RasPad https://www.youtube.com/watch?v=0PIEU5qPnYI

Raspberry Pi 400 https://www.youtube.com/watch?v=P1E5xszQqV8

Raspberry Pi

Raspberry Pi 學習的參考網站

要將開機的圖檔換掉

How remove the lightning bulb(閃電icon)

查看 Raspberry Pi 的 CPU 溫度、運行速度與電壓等資訊

查詢記憶體ram的大小

Mounting USB disk

改mount 外加磁碟的名字

關機小開關

查詢版本

Imager 備份 SD 卡

image download

Installing the Remote Desktop Server

In Linux

運用整個 SD Card 容量

ip Address show

無線網路設定

安裝 中文輸入 fcitx vs scim vs ibussudo

change the SSH server port

遠端桌面連線

套件更新

使用wget -O下载并以不同的文件名保存

使用wget –limit -rate限速下载

Get file from FTP

timedatectl

Sound Card setup

Systemd

List services:

Start service:

Stop service:

Enable service:

Disable service:

curl

調整image 記憶體大小

Install Samba under Armbian or Raspbian

install SMplayer

orange pi install chromium

安裝藍牙圖形設置菜單

安裝Samba

架設 SFTP 伺服器 另一個方法是使用WinSCP(推薦)

Install FileZilla

架設 LAMP

設置HDMI

設置Audio

安裝Waveshare 3.5”LCD及安裝驅動程式

查看CPU溫度

Raspberry Pi Camera 拍照

用Python庫picamera控制樹莓派攝像頭模組

USB Camera for raspberry Pi

安裝 tmux

PPTP VPN SERVER setup TCP port 1723

安裝 Docker

[Docker 指令]

Docker 安裝 Nginx Service ( Nginx 是一個 Web Server 的 service)

docker compose 安装

DS18B20 sensor

3.5吋 LCD Full Screen 顯示 CPU 溫度

Method 2: .bashrc

Method 5: crontab 推薦這方法

crontab 固定時間的設定 線上工具

安裝 pyaudio

安裝 Google 套件

sound card select

Python-uinput

RFID reader with python3

Basic code to read the RFID UID

OTA

建立cups列印伺服器

熱感式印表機

全螢幕打開及關閉browser

Magic Mirror 2

Disabling the screensaver

SET UP A RASPBERRY PI AS A Browser DISPLAY (KIOSK MODE)

install Kodi

Bluetooth

安裝RaspAP無線基地台

安裝 Mosquitto

Setting environment variable for service

Easy Raspberry Pi Based Slideshow 可作為互動式廣告看板

RasPad https://www.youtube.com/watch?v=0PIEU5qPnYI

安裝中文輸入 fcitx vs scim vs ibussudo

架設 SFTP 伺服器另一個方法是使用WinSCP(推薦)

crontab 固定時間的設定線上工具