As a quick example today, the following source code is for a Python feedparser script I wrote, based on the URL shown:
Scala, Java, Unix, MacOS tutorials (page 277)
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:
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This isn’t a blog post as much as it is just some notes on how I got streamripper working the way I want to on my Raspberry Pi “AlRadio” project. That project is a little like a radio in that it plays FM radio stations, but it also plays live radio streams, makes and plays recorded radio streams, and plays podcasts.
Streamripper in production
I installed streamripper with apt-get like this:
To see what’s running on a Mac OS X port, use this lsof command:
$ sudo lsof -i :5150
This command shows what’s running on port 5150. Just change that to whatever port you want to see.
To build a Sencha ExtJS application, move to your project’s root directory, then run this command:
$ sencha app build
Assuming that the build works fine, you can test the production build in your browser at a URL like this:
About a month ago I shared some code for my Wikipedia Reader application, which reads Wikipedia pages out loud to you. As I thought about what I want from that application, I thought, “Why limit it to reading Wikipedia pages? What if it could read a book?”
The Bolder Boulder 10K run is Boulder, Colorado’s version of the Kentucky Derby.
Lesson learned yesterday: Never use Sencha ExtJS autoLoad, especially when working with a Grid panel. I ran into a problem where my grids kept showing a “loading” message, but never loaded the data. Or, more accurately, I should say that they rarely loaded the data. Sometimes they would load the data, but I could never get them to load the data consistently. Then I found this solution, which seems to work well.
I’ve spent most of the last week building a radio-like device out of a Raspberry Pi. I got an FM radio chip, soldered it, then wrote a bunch of software. The result is that the device works, and I have a web-based UI, as shown. I can listen to live FM radio, online radio streams, recorded radio streams, and podcasts. I may take a little more time to get Pandora working, but it’s not a high priority at this point. The web UI is created with Sencha ExtJS, and the back end is written with the Play Framework, along with a Python script, and a handful on Unix/Linux utilities. A nice benefit of this approach is that I can control my “radio” from any device with a browser, i.e., a PC, tablet, or phone.
I just tried a quick test of transparency/translucency on Mac OS X using Java, and in short, here is the source code I used to create a transparent/translucent Java JFrame on Mac OS X 10.9:
One thing I’ve learned over the years is that baseball is a game of adjustments, and in 2014 Mark Buehrle has adjusted his pitch usage, and he’s off to a great start. They showed this graphic on MLB.tv during one of his recent starts.
When you first work with a Sencha ExtJS or Touch Store and Proxy, you’ll quickly find that when you create GET and POST REST services, by default the store/proxy adds extra parameters to the end of the URLs you’re accessing.
Thoughts from the Dalai Lama on home, helping others, and living a meaningful life.
As I noted yesterday, I got a Play Framework application running on a Raspberry Pi (RPI) this weekend. It was pretty easy; I just deployed the application to a production server as usual, and on the RPI I only had to install Java, and control the RAM usage.
I’m working on an application/system where I have an FM radio chip in a Raspberry Pi, and I control the radio chip with a web service. The web service is written in Python, and is powered by the Python “Bottle” web server.
Here’s the Python/Bottle source code for my radio web application:
Here’s a quick look at how to read Play Framework application.conf configuration properties.
First, given a Play application.conf file with these properties:
foo=42
bar.baz=10
stations = [ 99.5, 102.3, 104.3, 105.9 ]
streams = [
{ "name": "104.3", "file": "104_3.pls" },
{ "name": "WGN", "file": "wgn.pls" }
]
You can read the foo property (as a String) from your Play code like this:
Here’s a good story on mindfulness becoming mainstream. “The analogy that Kabat-Zinn uses is with jogging. In the 1960s when he started running, people thought him a bit odd. Now on a Sunday morning parks and streets are full of people pounding away. The take-up rate for mindfulness, Kabat-Zinn says, is much sharper than for jogging. In another decade, one can imagine that it will be widely accepted and understood as a valuable way to look after your mental health.”
