Hardware Selection for handheld concept

For the screen we can use: WINGONEER Raspberry Pi 3.5inch 800×480 60fps, which uses the GPIO. I think the documentation for this can be found in the raspi-wiki on this page. Assuming that this is the right display, then we need to write the following into the /boot/config.txt file.

#for raspberry pi 3b+/3b/2b+/b+
dtoverlay=dpi18
overscan_left=0
overscan_right=0
overscan_top=0
overscan_bottom=0
framebuffer_width=800
framebuffer_height=480
enable_dpi_lcd=1
display_default_lcd=1
dpi_group=2
dpi_mode=87
dpi_output_format=0x6f005
hdmi_timings=480 0 16 16 24 800 0 4 2 2 0 0 0 60 0 32000000 6
display_rotate=3

For the Battery I think we can use this UPS hat. Since it stacks, I think that means we can use a Raspberry Pi 3 (and underclock it down to match the Pi Zero), to get wifi and bluetooth. I don’t think we need the Raspberry Pi 3B+ or 4, since we generally don’t need the heat or extra power, since we’re generally going for 2d at 800×480.

Streaming from Framebuffer

https://lists.freedesktop.org/archives/gstreamer-devel/2013-July/041965.html

How to specify 16 bit, 32 bit?
How to specify width and height?
How to create new virtual interface?
How to stream data?

sudo ffmpeg -f fbdev -r 20 -i /dev/fb0 this_test.mpg

https://www.acmesystems.it/ffmpeg
Raspberry Pi Security Camera

Raspberry Pi Case: https://www.tindie.com/products/Ampersand/null-2-kit/
Jsmpeg: https://github.com/phoboslab/jsmpeg
Framebuffer Png: https://github.com/AndrewFromMelbourne/raspi2png

Jxr Compile Notes

root@raspberrypi:/home/pi# apt-get install -y vim gcc g++ make zip git openjdk-11-jdk libmariadb-dev-compat libmariadb-dev python pkg-config libgtk2.0-dev libcurl4-openssl-dev libidl-dev libxt-dev unixodbc-dev bison flex

protected
signed char
freetype2/freetype/tttables.h

https://github.com/servo/nss/blob/master/lib/pk11wrap/secmodt.h

https://pastebin.com/RP0zuTwh
https://pastebin.com/q2FQTKp9

Testing for the Raspberry Pi 4

Can I install Gnome?
Can I install i3/sway?
Can I install xfce4?
Can I install kde?

Storage Speed with sd card?+
Storage Speed with usb 3.0?
Storage Speed with ssd via usb 3.0?
Can I set up raid or backup with 2x usb?

Can I install open street map?
Can I run godot?
Can I run blender?
Can I use a wacom tablet?

Debian Buster is out on the Raspbian release, but I want to see if debian official’s ARM64 image is able to run on the Pi.