The system uses a raspberry Pi a the now probably obsolete PiLite LED matrix to produce a scrolling marquee sign.

The current version combines a generic python script (which runs the sign) with a copy of R, which acts as a feed aggregator through the package feedeR

##Instructions to set up

• Create a new image of Raspbian and burn to SD card
• Turn on RPI, with a keyboard connected

sudo raspi-config Add wifi details for local network

• Select “Interfaing / Serial”.

• Select “No” to disable the login shell over serial.

• Select “OK” when it says the serial interface has been disabled.

• Make sure the serial hardware is enabled

• Turn in ssh in the interfacing menu

• Reboot

After restart you should be able to access by ssh

Edit wpa supplicant file.

sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=GB
	
network={
    ssid="ssid"
    psk="pw"
}

network={
    ssid="ssid"
    psk="pw"
}

https://www.raspberrypi-spy.co.uk/2013/09/how-to-setup-the-pi-lite-led-matrix-board/

Edit the config.txt file using

sudo nano /boot/config.txt

At the bottom of this file there is a line containing “enable_uart=0”. Change this to “enable_uart=1”.

sudo apt-get install minicom

Once installed you can use Minicom to send data to the Pi-Lite using the following command :

minicom -b 9600 -o -D /dev/serial0

Pressing keys on your keyboard should result in them appearing on the Pi-Lite!

To exit Minicom press “CTRL-A”, then “X” and finally press “Return” to select “Yes” from the prompt.

sudo apt install git
git clone https://github.com/chrissyhroberts/chimneypot_oracle.git

To make perl work, need some packages and cpanminus installer

curl -L https://cpanmin.us | perl - --sudo App::cpanminus
sudo cpanm install Device::SerialPort

Next we need to install the Python serial package :

sudo apt-get install python-serial

Typing the following command will browse to the Python examples folder :

cd PiLite/Python_Examples/

Some of the other scripts require a few more Python libraries to be installed.

sudo apt-get install python-setuptools
sudo apt-get install python-pip
sudo apt-get install python-requests
sudo pip install arrow
sudo pip install functools_lru_cache

copy the

python anytext.py hello, world

sudo apt install libcurl4-openssl-dev sudo apt install libssl-dev sudo apt install libxml2-dev

sudo apt-get install r-base

Start a copy of R

sudo R

Add libraries

install.packages("devtools")
devtools::install_github("DataWookie/feedeR")

Quit R

q()

The R script has a chunk which starts getnews <- function()

Each following line adds a feed to the bottom of the data table.

so to add a new line, just paste this below the last current line

a<-c(a,getfeed("http://feeds.bbci.co.uk/news/entertainment_and_arts/rss.xml"))

sudo apt-get install wiringpi

## Scheduling

The system should run at startup, first pulling most recent scripts from github, then running the R script, which then loops until stopped or powerdown.

Using cron is the easiest way to do this

example crontab

@reboot cd /home/pi/chimneypot_oracle > /home/pi/chimneypot_oracle/cd.log 2>&1 && Rscript R_Master_Control_Script.R > /home/pi/chimneypot_oracle/R.log 2>&1