1. Install Raspian, i just took the standard image.

2.  Install Fadecandy server  (https://github.com/scanlime/fadecandy).

git clone https://github.com/scanlime/fadecandy.git
cd fadecandy/fcserver
make submodules
make

3. Install RaspAp (https://github.com/billz/raspap-webgui),  Tutorial: https://howtoraspberrypi.com/create-a-wi-fi-hotspot-in-less-than-10-minutes-with-pi-raspberry/ the first listing is wrong, instead of

sudo cp /etc/wpa_supplicant/wpa_supplicant.conf /etc/wpa_supplicant/wpa_supplicant.conf.sav
sudo cp /dev/null/etc/wpa_supplicant/wpa_supplicant.conf

 just run the first command 

sudo cp /etc/wpa_supplicant/wpa_supplicant.conf /etc/wpa_supplicant/wpa_supplicant.conf.sav 

Connect all your matrixes to the power distribution board and power it up.

Connect the FadeCandy to the Raspi, throw the fcserver.json into the same directory and start the server using 

fcserver fcserver.json

in the examples  subfolder of your fadecandy are some examples to test your installation.

Depending on your layout you need to tweak the config.

1. Connect to your RaspAp, as described on their github page (see above), configure it to your like.

2. Setting up the FadeCandy server (taken from awesome as usual tutorial from adafruit  https://learn.adafruit.com/1500-neopixel-led-curtain-with-raspberry-pi-fadecandy/fadecandy-server-setup)

Copy the fcserver binary and its config to some better place,

sudo cp fadecandy/server/fcserver /usr/local/bin
sudo cp fadecandy/server/fcserver.config /usr/local/bin

 To make the fcserver program start automatically when the system boots:

sudo nano /etc/rc.local

Just above the final “exit 0” line, copy and paste the following:

/usr/local/bin/fcserver /usr/local/bin/fcserver.json >/var/log/fcserver.log 2>&1 &

Reboot your Raspi

On any computer connected to your RaspAp hotspot, run one of the fadecandy examples. You probably need to fix the IP.

You also could run the processing sketch found at the files.