Raspberry Pi 4
All the commands below are tested under Debian Buster 10
Wpa_supplicant.conf
For a fresh OS, you may need to create or edit the wpa_supplicant.conf in order for the Raspi to be connected to Wifi after its startup
Clean up space
Sometimes, you would like to clean up space of SD card
You can uninstall some unnecessary package and do some cleaning
Enable I2C
go to /boot/config.txt and change to the following:
Detect I2C
Install tools for I2C
Scan I2C devices
Enable UART1
To enable UART, go to /boot/cmdline.txt and removed the line "console=serial0,115200"
It should become like the following:
go to /boot/config.txt and add
Use default uart TX0, RX0
Disable MAC address randomization
To bind your Raspi to static ip address assigned by router, you would hope the MAC address is always the same for the Raspi.
To avoid randomization, create file at /etc/NetworkManager/conf.d/100-disable-wifi-mac-randomization.conf
References
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