https://github.com/amzn/alexa-avs-raspberry-pi
For everyone without a hardware Echo system it is possible to use Alexa with an Raspberry Pi.
It's not a bug it's a feature – vincit omnia veritas
https://github.com/amzn/alexa-avs-raspberry-pi
For everyone without a hardware Echo system it is possible to use Alexa with an Raspberry Pi.
http://www.droneshield.org/Home.html
http://www.indiegogo.com/projects/droneshield/
“ DroneShield: A simple device that alerts you to nearby drones
DroneShield is a low-cost, easy-to-use device that detects the presence of nearby drones (including RC helicopters, quadrotors, etc) and issues alerts via email, sms, and a flashing light. The goal is to help preserve privacy from low-cost remote-control air vehicles with video cameras.
How Does It Work?
DroneShield includes a microphone that listens for sounds of drones. Each DroneShield contains a database of common drone acoustic signatures so false alarms are reduced (IE ignores lawn mowers and leaf blowers) and in many cases the type of drone is also included in the alert.
Technical Specifications
Our initial target platform is the Raspberry Pi. Other components include a microphone, power supply plugs (or micro-USB battery pack). Wifi connectivity is required for email and SMS alerts. Signature database updates can be downloaded and uploaded on the RPi’s SD card.
What’s the Plan?
The goal of this initial campaign is to create a low-cost device that will help protect privacy against RC helicopters and quadrotors with video cameras; we already have a working prototype running on a laptop. The Indiegogo campaign will port that code to a small low-cost hardware platform that you can plug in and forget about. If you like you can periodically update the signatures of the drones we scan for, or even contribute your own signatures to the database.
We hope that there will be enough interest to justify further development to reduce costs in future generations; we believe ultimately we could get the cost down to the $20-range at scale. Future plans could include moving to an open-source ’sourceforge‘ type development environment and teaming with additional hardware makers. We could also envision a smart-phone based platform for portable applications.“
http://www.cafepress.de/cp/customize/product2.aspx?number=836272730
found via http://www.techthefuture.com/technology/open-source-droneshield-kit-alerts-you-of-snooping-uavs
„Having recently received my Raspberry Pi, one of the first things I wanted to do was hook up a real-time clock chip I had lying around (a NXP PCF8563) and learn how to drive I2C from the BCM2835 hardware registers. Turns out it’s quite easy to do, and I think makes a useful project to learn with.
So, here are some notes I made getting it to work, initially with Chris Boot’s forked kernel that incorporates some I2C handling code created by Frank Buss into the kernel’s I2C bus driver framework.“
http://www.susa.net/wordpress/2012/06/raspberry-pi-pcf8563-real-time-clock-rtc/
(c) Kevin Sangeelee
„Pi-Face Digital is the first of a range of interfaces to allow the Raspberry Pi to control and manipulate the real world.
It allows the Raspberry Pi to read switches connected to it – a door sensor or pressure pad perhaps, a microswitch or reed switch, or a hand held button.
With appropriate easy to write code, the Raspberry Pi then drives outputs, powering motors, actuator, LEDs, light bulbs or anything you can imagine to respond to the inputs.
http://pi.cs.man.ac.uk/interface.htm
The University of Manchester – School of Computer Science
„Raspbmc is a minimal Linux distribution based on Debian that brings XBMC to your Raspberry Pi. This device has an excellent form factor and enough power to handle media playback, making it an ideal component in a low HTPC setup, yet delivering the same XBMC experience that can be enjoyed on much more costly platforms. Raspbmc is brought to you by the developer of the Crystalbuntu Linux Distribution, which brings XBMC and 1080p decoding to the 1st generation Apple TV.
Here’s why you might like Raspbmc:
Raspbmc is created and maintained by Sam Nazarko, an 18 year old student from London.“