Rasberry Pi: Difference between revisions
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* [https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#raspberry-pi-3-model-b Rasberry Pi 3B] | * [https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#raspberry-pi-3-model-b Rasberry Pi 3B] | ||
* [https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#gpio-and-the-40-pin-header GPIO] | * [https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#gpio-and-the-40-pin-header GPIO] | ||
== Rasberry Pi OS == | == Rasberry Pi OS == | ||
Revision as of 15:22, 24 May 2026
Device
Rasberry Pi OS
See /boot/firmware/config.txt.
Command line configuration program:
raspi-config
Upgrades
apt update && sudo apt upgrade -y
Web Server
apt install apache2
- Configuration: /etc/apache2
- Serve from: /var/www/html
Change swap
free -m
swapoff -a dd if=/dev/zero of=/swapfile bs=1M count=1024 chmod 600 /swapfile mkswap /swapfile swapon /swapfile
Add to /etc/fstab:
/swapfile none swap sw 0 0
NFS Automounter
apt install autofs nfs-common -y
Edit /etc/auto.master and enable the host map:
/net -hosts --timeout=60
systemctl enable autofs systemctl restart autofs
Composite Video
Note: CVBS is on sleve; Gnd is ring 3. It is enabled when no HDMI monitor is connected.
In /boot/firmware/config.txt:
enable_tvout=1 dtoverlay=vc4-kms-v3d,composite
Ensure hdmi_force_hotplug=1 is commented out or set to 0.
In /boot/firmware/cmdline.txt, either:
vc4.tv_norm=PAL vc4.tv_norm=NTSC
To control overscan, see settings:
margin_left margin_right
Temperature
Divide value by 1000 to get temp in C:
- /sys/class/thermal/thermal_zone0/temp
CPU Core throttling above 80 C.