[Ken Olsen] needed a bunch of analog inputs for his model railroad project. He wanted to use the Raspberry Pi board, but alas there are no analog inputs available on the GPIO header. But there is SPI.

Chinese scientists have found a novel use for the Raspberry Pi: detecting voids in the linings of railway tunnels that could lead to structural damage, or even collapse.… News of the Pi's potential ...

One of the biggest problems with home automation is trying to interface with old or analog devices. Do you upgrade the device just so you can automate it? Or do you find a workaround like [Seb] did?

The $35 Raspberry Pi 2 Model B has dimensions roughly similar to those of a credit card. Though it appears to be little more than a chunk of PCB, the Raspberry Pi 2 actually contains the framework for ...