rpi

A Scala “Word of the day” shell script

I have a 19" monitor on the counter between my kitchen and living room, and it’s powered by a Raspberry Pi. I use the Linux Phosphor screen saver to show a scrolling “news and stock ticker” on the display, which I’ve programmed to show news from several different sources (Atom and Rss feeds, along with other news and data sources). An old version of the display looks like this:

My Raspberry Pi news ticker display

Today I added a new “Word of the day” feature to the display, and as with all of the other code, I wrote a Scala shell script to generate the output.

A Scala method to replace a few “bad” characters

Here’s a little Scala method I wrote to replace some “bad” characters that won’t print properly on my Radio Pi display:

def replaceBadCharacters(s: String): String = {
    s.replaceAll("“", "\"")
     .replaceAll("”", "\"")
     .replaceAll("‘", "\"")
     .replaceAll("’", "\"")
}

There are other ways to solve this problem, but I threw this together as a quick patch until I can figure out why the Phosphor screen saver on the Raspberry Pi won’t print those characters that I’m replacing.

Raspberry Pi camera module shell script

As a quick note today, this is the source code for a Raspberry Pi (RPI) camera module shell script that I created so a friend can turn her Raspberry Pi camera on and off from the RPI command line (Linux command line):

A simple Python feedparser script

As a quick example today, the following source code is for a Python feedparser script I wrote, based on the URL shown:

Radio Pi (formerly “Al Radio”)

I’ll write more about this as time goes on, but I’ve finished the first round of software (and hardware) development on my “Radio Pi” project (which, thanks to a friend, I now refer to as my “RadioPi” system). This project lets me play local FM radio stations, online radio streams, recorded radio streams, and podcasts, all from a little Raspberry Pi (RPI) computing system.

Video

First, here’s a short video of my RPI Radio in action: