Free PDF download of MagPi, a magazine about Raspberry Pi projects

Raspberry Pi is a credit card sized (or smaller) Linux computer that costs about $35 (you also need a monitor, a keyboard, SD card, and power source). The organization that developed it is called the Raspberry Pi foundation and they publish an excellent project magazine called MagPi. The PDF version is free to download. Issue 69 just came out and it has some good projects: