USB Audio Cards with a Raspberry Pi

The Raspberry Pi has an on-board audio jack, which is super handy for all kinds of sound effects and speech, just plug and go! However, for when you want better audio for music playback, a USB audio card can greatly improve the sound quality and volume, this tutorial will show you how...
 USB Audio Cards with a Raspberry Pi

World’s Smallest Drone Autopilot System Goes Open Source

The Lisa/S chip is 4 square-centimeters — about the same size as a Euro coin. But this 1.9-gram sliver of silicon includes everything you need to autopilot an aerial drone.

The Lisa/S is the MAV Laboratory’s latest project. The chip’s software is based on Paparazzi, an open source drone autopilot system that’s been around since 2003. The real innovation is the hardware. The tiny chip packs in everything you need for an autopilot system, including a gyroscope, accelerometer, altimeter, GPS, and an ARM processor — the same sort of CPU you might find in your smartphone. The Lisa/S can be used with any type of drone, from quadcopters to fixed-wing systems, Remes say

World’s Smallest Drone Autopilot System Goes Open Source