HAT-A3 - Led RGB controller for Raspberry Pi 3

HAT-A3 is the Acme Systems version of the Active-3 board designed by Henner Zeller to controll RGB led display with Raspberry Pi 3

Active-3 project Henner Zeller GitHub repository

Wiring

Install the utility led-image-viewer

The fully documentation to install the Henner Zeller software is available on his GitHub repository from this link:

If you you want to quicky try your panel these are the commands to type using a Rasbian Lite microSD - March 2018.

To download the microSD image go to this link:

Boot your Raspberry Pi and get the access to the command console. Then type:

sudo apt-get update
sudo apt-get install git
sudo apt-get install libgraphicsmagick++-dev libwebp-dev
sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev
git clone https://github.com/hzeller/rpi-rgb-led-matrix.git
cd ~/rpi-rgb-led-matrix/utils
make led-image-viewer
make video-viewer
cd ~/rpi-rgb-led-matrix/examples-api-use
make 

Remove the snd_bcm2835 module

"If sound is enabled on your Pi, this will not work together with the LED matrix". This problem is explained here:

To remove this module type the following commands:

cat <<EOF | sudo tee /etc/modprobe.d/blacklist-rgb-matrix.conf
blacklist snd_bcm2835
EOF
sudo update-initramfs -u
sudo reboot

Lets try some demos:

To send a full size pulse color on a single RGB panel wired on TOP connector:

cd ~/rpi-rgb-led-matrix/examples-api-use
sudo ./demo -D 4 --led-chain=1 --led-parallel=1

To send a full size pulse color on a two RGB panel wired on TOP connector:

sudo ./demo -D 4 --led-chain=2 --led-parallel=1

To send a full size pulse color on a three RGB panel wired on TOP, MIDDLE and BOTTOM connectors:

sudo ./demo -D 4 --led-chain=1 --led-parallel=3

To scroll an image on four RGB panels wired on the TOP connector:

sudo ./demo -t 10 -D 1 examples-api-use/runtext.ppm --led-chain=4 --led-parallel=1

How to continue

More and more examples are available on the Henner Zeller repository:

How to convert a mp4 video to animated gif

#!/bin/sh

palette="palette.png"
filters="fps=30,scale=128:-1:flags=lanczos"
ffmpeg -v warning -i $1 -vf "$filters,palettegen" -y $palette
ffmpeg -v warning -i $1 -i $palette -lavfi "$filters [x]; [x][1:v] paletteuse" -y ${1%%.*}.gif

#echo $1
#echo ${1%%.*}.gif

./m2g.sh video.mp4

Author:
Sergio Tanzilli - tanzilli@acmesystems.it
http://www.tanzolab.it - http://www.tanzilli.com - https://github.com/tanzilli

Buy

EUR 35.00


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