Wireless
HOW TO – Make a Stereo Miniature Microphone and Battery Module…
Here are two great how-tos from the Sony mini disc forums “How to build a high quality stereo / binaural miniature microphone Required parts: – 2 omnidirectional miniature electret microphone capsules (get the best ones you can find / afford – your selection will have a major influence on the sound quality) – 3.5 mm stereo connector with cable, preferrably shielded – a few inches of heat shrinkable tubing, slightly larger diameter than the capsules” Link.
What is Asterisk? SYSTM video!
New SYSTM! – “What is Asterisk? Asterisk is an insanely powerful, yet easy to use, open source voip telephony toolkit (server software) that runs on virtually any platform. It allows anyone to manage VoIP services in their own home in more powerful ways than the most expensive PBX (public branch exchange). For example, it can serve as a gateway from a VoIP service to your copper phone lines, forward calls to your mobile device from wherever you are, allow you to create VoIP connections to anyone on the Internet, manage voicemail, prompts … a virtually limitless capability depending on how far you want to take it.” [via] Link.
BTC Optical Mouse Hack
Mac writes “A while back, I happened upon the application note “Interface to Optical Mouse Sensor” on the Kronos Robotics website. It discusses the use of a sensor from an optical mouse for use in position sensing coprocessor on a robot. The application note did not go beyond the proof-of-concept stage. That is, could the sensor be directly interfaced and controlled? Since I didn’t have easy access to the GE mouse described in the application note, I wanted to see if there were other optical mice available that had an Agilent optical mouse sensor, which I could use in its place. I also wanted to go beyond the proof-of-concept stage and acutally use an optical mouse sensor in a robotics application. Before developing that application, though, I first needed to gain familarity with interfacing to the optical mouse sensor in a Forth environment. This webpage describes the hack I did to a BTC optical mouse to enable direct control of the Agilent (now Avago, see below) ADNS-2610 Optical Mouse Sensor and the Forth code written to control it.” [via] Link.
Satellite from a space suit
DIY satellite of sorts…A Russian Orlan spacesuit with three batteries, a radio transmitter, and internal sensors to measure temperature and battery power – “One of the strangest satellites in the history of the space age is about to go into orbit. Launch date: Feb. 3rd. That’s when astronauts onboard the International Space Station (ISS) will hurl an empty spacesuit overboard. The spacesuit is the satellite — “SuitSat” for short.” [via] Link.
HOW TO – Wireless Networking in the Developing World
Free PDF download “The massive popularity of wireless networking has caused equipment costs to continually plummet, while equipment capabilities continue to increase. By applying this technology in areas that are badly in need of critical communications infrastructure, more people can be brought online than ever before, in less time, for very little cost. We hope to not only convince you that this is possible, but also show how we have made such networks work, and to give you the information and tools you need to start a network project in your local community.” – [via] Link.
iTrip install on a Mac Mini…
MAKE flickr photo pool member Zapwizard writes “I don’t have enough money or time to replace my headunit, or buy the Radioshark. So instead I am integrating a iTrip FM transmitter directly into the Mini. The iTrip was wired up, I choose to wire it to +5volts from the USB, as I couldn’t find a reliable source of 3.3volts. A dummy headphone jack allows the iTrip to turn on. Later when I replace my headunit I can just jack into the headphone jack and get straight audio.” Link.
