Setup Parts

Connect your Omega, Expansion Dock, and OLED Expansion as shown.

Setup Wifi

You will need to setup wifi so that we can install python and fetch stock data from google:

wifisetup

Follow the instructions and give the Omega access to your wifi network.

Update and Install Python

We will need to install the full version of Python so that we have access to some libraries necessary for webscraping:

opkg update
 opkg install python

You may or may not need to clear some space on your Omega for the installation. If you are doing this right out of the box, you should be fine.

Create the Shell Script

Navigate to your "/" directory. Create the shell script which we will be using:

cd / cat > stock.sh

Now paste the following code (You can save and exit the command by entering CTRL + D):

#!/bin/sh
 oled-exp -c
 echo $1 > /root/ticker.txt
 VAR=$(python ./stock_script.py)
 oled-exp -i  oled-exp write $VAR

Create the Python Script

Now lets do the same with our python script.

cat > stock_script.py

#!/usr/bin/env python
 import urllib
 import json

 myfile = open('/root/ticker.txt', 'r')
 rg=myfile.read()
 site="http://www.google.com/finance/info?q="+rg

 jfile=urllib.urlopen(site)
 jsfile=jfile.read()

 jsfile=jsfile.replace("\n","")
 jsfile=jsfile.replace("/","")
 jsfile=jsfile.replace("]","")
 jsfile=jsfile.replace("[","")

 a=json.loads(jsfile)

 ticker=a['t']
 price=a['l_fix']
 info=ticker+":"+price

 print info

Change Permissions

Make both files we just created executable by entering this:

chmod +x stock.sh stock_script.py

Execute Script

Now let's see how Apple is doing.

./stock.sh AAPL

Going Further (optional) :

To take the project one step further, let's schedule our script to run every minute. To do this, enter the command:

crontab -e

You will be taken to the vi-editor of the scheduling file. Add the following line to your file and make sure to end the file with an empty line or #.

*/1 * * * * /stock.sh AAPL

You can save and quit the editor by entering ZZ.

Using this project as a template, we can go even further with webscraping projects. Maybe build a new headline streamer or an up to date weather tracker.

Complete!

Parts of this project can and are encouraged to be used in other projects.

This guide was taken from the onion wiki: