Rasberry Pi: Difference between revisions
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=== Change swap === | === 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 | |||
=== Composite Video === | === Composite Video === | ||
Revision as of 14:42, 24 May 2026
Device
Windows IOT
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
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.