display device version
Model: Raspberry Pi 3 Model B Rev 1.2
pinout
// or
cat /proc/cpuinfo
Auto post IP to slack
touch ~/autostart.sh
#!/bin/bash
myip=$(ifconfig | sed -En 's/127.0.0.1//;s/.*inet (addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p')
msg="{\"text\":\"Pamcy PI ip:\\n $myip \"}"
curl -X POST -H 'Content-type: application/json' --data "$msg" https://hooks.slack.com/services/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
modify
~/.config/autostart $ cat ip.desktop
[Desktop Entry]
Name=example
Comment=My Python Program
Exec=/bin/bash /home/pi/autostart.sh
Terminal=false
MultipleArgs=false
Type=Application
Categories=Application;Development;
StartupNotify=true
install raspberry Os
before, you install raspberry os… (requirement)
- SD card reader
- internet cable or wifi (anyway to get local IP to ssh into raspberry); you can find raspberry PI local IP in wifi (router) AP admin panel
Raspberry PI 映像檔建議從官網下載新的，imager 拉到的不一定是最新的
- Raspberry Pi Documentation - Getting Started
- install app to write os into SD
( Raspberry Pi Imager)- before
write,Ctrl-Shift-Xto set, onboot ssh, wifi connect… - after~ image write done; plug sd card into raspberrypiPi
- before
- power on raspberrypiPi
- try ssh into…
ssh pi@[local ip]
- ssh: default user
pi, with passwordraspberry- mkdir ~/.ssh
- chmod 700 ~/.ssh
- touch ~/.ssh/authorized_keys
- chmod 600 ~/.ssh/authorized_keys
- modify authorized_keys, paste you are ssh pub key e.g. id_rsa.pub
config
sudo raspi-config
font family, size
disable native wifi
modify /boot/config.txt
add line
dtoverlay=disable-wifi
ref.
- https://raspberrytips.com/disable-wifi-raspberry-pi/
- raspbian - Disable WiFi (wlan0) on Pi 3 - Raspberry Pi Stack Exchange
Wifi AP
RaspAP
https://raspap.com/
USB device status
lsusb
https://help.ubuntu.com/stable/ubuntu-help/net-wireless-troubleshooting-hardware-check.html.en
internet
ifconfig
iwconfig
iw list
iw dev
rfkill list
rfkill block 0
note
可能問題
RaspAP 在使用 wlan 的時候預設使用 wlan 0
比較建議先停用內建 wlan
建議不要插太多 USB 裝置，據說有干擾問題
唯一的外接 USB WIFI 可以用短延長線更