The best free PC software programs aren’t about the cost (or lack thereof), they’re about a fresh opportunity—collections of code that put the dumb hardware in your computer to smart use ...

Shelby Putnam Tupper is founder and creative director of Shelby Designs Inc., a small-but-mighty, full-service, customer-obsessed design consultancy.

He’s using a Microsoft Lifecam Cinema HD camera, which connects to one of the USB ports on the board. Just above that you can see the infrared distance sensor which is connected to the RPi’s ...