[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.

The Raspberry Pi is a very capable device whose hardware has been pushed to the limit in all sorts of interesting ways. But even the most ingenious of experimenters have to agree on one point; it ...

Makers, developers and hobbyists that enjoy building projects using the awesome Raspberry Pi mini PC may be interested in a new digital and analog expansion board called the PIIO. The PIIO has been ...

The Raspberry Pi has become an extremely popular development platform (see “Arduino, Raspberry Pi or BeagleBone?”). It can run Linux and hooks up to displays and Ethernet networks. The latest ...

A heating and cooling thermostat requires a web-connected microcontroller, relays for activating the external circuits, and analog inputs for reading the temperature ...

Anyone creating autonomous systems using the Raspberry Pi range of mini PCs might be interested in the new Multi-iO HAT specifically designed for Raspberry Pi automation. Compatible with all Raspberry ...

The Raspberry Pi is an inexpensive little computer-on-a-board with a low-power processor, an Ethernet port, and HDMI output. If you want a video input, y0u can buy an optional camera accessory… but if ...