Pyroelectric InfraRed (PIR) Sensor for Raspberry PI – Data Sheet

I had a little bit of trouble tracking down the datasheet for some PIR sensors I bought recently, but finally found a good link:

http://eecs.oregonstate.edu/education/docs/pir/31227sc.pdf

It looks like I can adjust both the time delay as well as the sensitivity on these; can’t wait to hook a few of these up to an Azure Event Hub!

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Resolved: “This module can only be run on a Raspberry Pi!”

I received a new Raspberry PI 2 and fired it up today.  Upon running my first GPIO enabled program I got the following error:

“This module can only be run on a Raspberry Pi!”

To resolve, I just needed to update RPI.GPIO:
sudo apt-get update && sudo apt-get install python-rpi.gpio python3-rpi.gpio

More info here:

http://www.raspberrypi.org/forums/viewtopic.php?f=32&t=98466&p=684000#p683480

Setting up Bose Companion Speakers on Ubuntu 14.04

I love my Bose Companion 5 speakers, but had a bit of trouble getting them to work on a Toshiba Portege I recently rebuilt with Ubuntu.  Here are the steps to get it working:

  1. Plug the speakers into a USB port
  2. Reboot
  3. Go to sound settings, the speakers should now appear.  Select them.
  4. Open terminal and run sudo gedit /etc/modprobe.d/alsa-base.conf
    1. Change last line that reads: options snd-usb-audio index=-2 to options snd-usb-audio index=-1
  5. In terminal run alsamixer
    1. Select the Bose sound card (F6)
    2. Use the arrow keys to increase the volume
  6. Fire up Pandora and rock out!

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