Rasberry Pi

Device

• Rasberry Pi 3B
• GPIO

Windows IOT

• Blog

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

dphys-swapfile swapoff

Edit /etc/dphys-swapfile, eg 1 GB:

CONF_SWAPSIZE=1024 

dphys-swapfile setup
dphys-swapfile swapon

Composite Video

Note: CVBS is on sleve; Gnd is ring 3. It is enabled when no HDMI monitor is connected.

In config.txt, set for PAL (UK):

• sdtv_mode=2

Temperature

Divide value by 1000 to get temp in C:

• /sys/class/thermal/thermal_zone0/temp

CPU Core throttling above 80 C.