Installation

Raspberry Pi Installation

Install the official installer tool Raspberry Pi Imager
Depending on the OS, find the adapted software.
https://www.raspberrypi.com/software/
Run the installer tool and configure the future OS
- Depending on RPI model, choose an adequate OS
  
  RPI Model Specs OS Recommended PSU
  
  RPi 1 B 700 Mhz - 256 MB RPi OS Lite (32 bit) >= 2.5A
  
  RPi 3 b 1 Ghz - 1 GB RPi OS Lite (64 bit) >= 2.5A
  - To identify the model
```
cat /sys/firmware/devicetree/base/model
cat /proc/cpuinfo
# Check RAM
free -h
```
- Set hostname (rpi-(dogname).local)
- Enable SSH
  - Pub Key : Use the RaspPI one
- Define user
  - name : rpi
  - pass : rpi
  - Set local settigns
    - timezone: America/Montreal
    - Keyboard : ca
SSH to board
- Configure GPU memory to minimum
  sudo raspi-config nonint do_memory_split 16

RPI Model	Specs	OS Recommended	PSU
RPi 1 B	700 Mhz - 256 MB	RPi OS Lite (32 bit)	>= 2.5A
RPi 3 b	1 Ghz - 1 GB	RPi OS Lite (64 bit)	>= 2.5A

Update the board completely

sudo apt update
sudo apt full-upgrade -y
reboot

Optimization

# Increase swap file
sudo dphys-swapfile swapoff
CONF_SWAPSIZE=1024 # in file /etc/dphys-swapfile
sudo dphys-swapfile setup
sudo dphys-swapfile swapon

# Disable HDMI
/usr/bin/tvservice -o
# Disable Bluetooth
# in /boot/config.txt, add
dtoverlay=disable-bt
# then disable services
sudo systemctl disable hciuart.service
sudo systemctl disable bluealsa.service
sudo systemctl disable bluetooth.service

Install ZRAM
https://github.com/novaspirit/rpi_zram

https://haydenjames.io/raspberry-pi-performance-add-zram-kernel-parameters/

Resources

https://feriman.com/raspberry-pi-optimization-hardware-and-software/
https://di-marco.net/blog/it/2020-04-18-tips-disabling_bluetooth_on_raspberry_pi/