Welcome to Jekyll!

2022-10-04T11:02:13+00:00

You’ll find this post in your _posts directory. Go ahead and edit it and re-build the site to see your changes. You can rebuild the site in many different ways, but the most common way is to run jekyll serve, which launches a web server and auto-regenerates your site when a file is updated.

Jekyll requires blog post files to be named according to the following format:

YEAR-MONTH-DAY-title.MARKUP

Where YEAR is a four-digit number, MONTH and DAY are both two-digit numbers, and MARKUP is the file extension representing the format used in the file. After that, include the necessary front matter. Take a look at the source for this post to get an idea about how it works.

Jekyll also offers powerful support for code snippets:

def print_hi(name)
  puts "Hi, #{name}"
end
print_hi('Tom')
#=> prints 'Hi, Tom' to STDOUT.

Check out the Jekyll docs for more info on how to get the most out of Jekyll. File all bugs/feature requests at Jekyll’s GitHub repo. If you have questions, you can ask them on Jekyll Talk.

Adventures with Headless RPi

2022-10-04T00:00:00+00:00

The goal

Run a tk-inter app from Docker on a headless Raspberry Pi

The tools

Raspberry Pi 4
Raspberry Pi OS Lite 64bit
4” HDMI screen
Docker

Install Portainer agent

docker run -d \
	-p 9001:9001 \
	--name portainer_agent \
	--restart=always \
	-v /var/run/docker.sock:/var/run/docker.sock \
	-v /var/lib/docker/volumes:/var/lib/docker/volumes portainer/agent:latest

Install xorg

sudo apt install

Issue 1: LCD isn’t full screen

https://www.raspberrypi.com/documentation/computers/config_txt.html#hdmi-mode

nano /boot/config.txt

Settings that seems to work for the console:

overscan_right=48
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=14
hdmi_drive=2
config_hdmi_boost=4
sdtv_mode=2

Get current screen config:

startx
xrandr

Errors generated in log file:

sudo startx
X -configure
nano /var/log/Xorg.1.log