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2013

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Phillip Burgess of Adafruit has used the Adafruit LCD Pi PlateAdafruit LCD Pi Plate to build a Raspberry Pi radio that can play Pandora streaming over Wi-Fi:

 

http://www.adafruit.com/blog/2013/04/12/make-a-raspberry-pi-wifi-radio/

Raspberry Pi, the little wonder-puter that’s taken the world by storm, is so affordable that we can create nifty single-purpose “appliances” around them without shame. Here’s our take on one of the more popular such applications: internet streaming media, the Pandora music service specifically.

With the addition of a small LCD, a few buttons and a USB wireless network adapter, the Raspberry Pi becomes an affordable self-contained music streamer that can be moved to any room of the house…wherever you need your tunes at the moment. Just connect power and speakers or headphones.

Here's a video:

 

Cheers,

Drew

PiFace controlling DC motor speed (notice the LEDs fading in and out, too)

[http://www.youtube.com/watch?v=QO9lDBBy5s8]

 

To follow up my last post, PiFace relay tricks: metronome & "playing" middle A, I'd like to show how Gordon's PiFace PWM code can be used to control the speed of a DC motor connected to one of the PiFace output screw terminals:

 

 

And the installation instructions:

 

 

 

 

 

Cheers,

Drew

 

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Gordon of WiringPi and drogon.net has created a nifty metronome demo program for the PiFace:

 

Here's the source code:

 

And the installation instructions:

 

As you'll notice in the above instructions, Gordon has figured out how to do PWM with the PiFace outputs!  Here is rather noisy application, middle A being "played" on the relays:

 

The background of Gordon's PWM PiFace work is in this comment on his blog:

https://projects.drogon.net/raspberry-pi/wiringpiface/#comment-2200

 

Cheers,

Drew