lab.Purchase

Where you can get loads of stuff for your projects:

On campus:

http://www.cmu.edu/university-center/artstore/

In Pittsburgh:

http://www.constructionjunction.org

http://www.radioshack.com

http://www.fastenal.com

http://www.grainger.com

On the web:

http://www.surplusshed.com

https://www.sparkfun.com

http://www.adafruit.com

http://www.jameco.com/

http://www.parallax.com

http://www.digikey.com

http://www.trossenrobotics.com