The Crandall Surf Report 2.0
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Wednesday, September 18, 2002
 

I've been pushing amateur science and have mentioned the excellent Society for Amateur Scientists. Some areas have enough members that regional chapters have formed. New Jersey is one such place and here is the local chapter

http://www.central-jersey-sas.org/

Bat detectors were one of the group projects and several designs are detailed. (Will Hill would love this!) Check out the field trip to a the Hibernia mine with audio. As they point out, a DSP based bat detector would be a fine project.
6:13:05 AM    


How about a homebrew "faster than light" experimenter's kit?

http://www.newscientist.com/news/news.jsp?id=ns99992796

(don't worry - Einstein is still safe, but this may be cool)
6:12:45 AM    


My Mother just bought a beautiful 17" flat panel iMac and has connected it to her laser printer and color inkjet printer. Since she regularly reads these pages, here is a nice piece in layperson's terms on what is going on inside of a laser printer

http://www.howstuffworks.com/laser-printer.htm

and a similar article on inkjets

http://www.howstuffworks.com/inkjet-printer.htm

The physics of printers is very interesting and non-trivial. I remember a question on the verbal part of my preliminary exam ... "how dark can a Xerox copier print?" ... one has to worry about charge distribution on the drum and characteristics of the toner. Making very black or very white things is not easy (and the black of a Xerox machine or a laser printer isn't very black).
6:12:12 AM    


While roughly on the subject of Mac OS X 10.2 one notes that 10.2 supports CUPS printing. If you use 10.2 and want to configure your printing environment using a browser try this local address...

http://127.0.0.1:631/
6:11:53 AM    


At last! I have been looking for a firewire hub (scanner, external firewire drive, DV cam and iPod ... it would be nice to keep the cables straight). Finally one that seems reasonable for the desk ... Hubzilla!

http://www.charismac.com/Products/hubzilla/index.html
6:11:11 AM    


Several readers have been interested in local access - particularly wireless local access. Rural access has its own fascinating technical, economic and social problems and a few folks keep hammering away. Two extremely colorful pioneers are Dewayne Hendricks and Dave Hughes. This following is from Dewayne's mailing list (it is making its way around and three copies filtered in from various sources) describing Dave's work in Wales.

___

"Wireless web gives villages free net

Wi-fi tech frees surfers from cables --- Not exactly. I haven't posted anything about my Welsh Wireless revolution (aimed squarely at the hated British Telecom) on my own web site. The Welsh are doing fine posting the details about it on their own. Media is beginning to catch on.

You can access www.e-fro.cd (e-fro is Welsh for Electronic Community. The Welsh National Assembly put up 100,000 pounds for me to do the first 'proof of concept' installation in the Ogwen Valley of North Wales.)

If you really want to hear my mellifluous voice exhorting the Welsh to go wireless, just dip into the Video subsection where they Taped 2 of my 12 presentations which were as badly received by BT as the speeches around Boston against the Brits were received in 1775. Damned BT told the Parliament they could not bring Broadband to rural UK, including Wales, until 2020, using ADSL and market forces. While I had bragged in a pub in Wales three years ago I could connect up *every* Welsh farmhouse to the Internet wirelessly, bypassing BT, by turning all Welsh Pubs into Wireless ISPs. They took me up on it.

The very small picture on the top page of www.e-fro.cd of guys on a mountain, that's us on Carnedd y Filiast (the 'Cairn of the Bitch' mountain, named in 1220 by the Welsh people after the wife of the Welsh King, Llellwyn the Great, for committing adultery with a Norman Lord, whom he promptly hung, even though she was the daughter of the English King John, 5 Years after he signed the Magna Carta. The Welsh hold long grudges).

We are making a pair of Cisco radios work in the picture 6.5 miles to a tower in Bangor, and thence down into the village of Bethesda, where one bright lady who owns a Pub, heard the boast, and now wants to offer wireless cyberpub at 1 pound an hour, and put it in her pool room, where the lads drink beer and play after working their butts off in the slate mines of North Wales.

The Welsh are so exited they are giving me all sort of tips on how best to do this. Like sending me maps of the 'Semaphore Relay Stations' used on Anglesey, Wales in the early 1800s to flash the news of approaching enemy ships in the Irish Sea from the tip of Holyhead, all the way across Wales to Liverpool. Semaphore stations. Perfect 802.11b radio relay sites. Line of sight, and not too far from each other!

I've already learned that spread spectrum goes through those old castle walls a hell of a lot better than modern buildings with metal in them!

Its going to be a gas if rural Wales is connected up Broadband before the suburbs of London are. If that happens I might even move there. I was damned near knighted after my first trip there. Giving them, for the first time, hope they will all be connected, and can get prosperous by using the net. And as an old soldier, I offered to help rebuild Offa's Dike, built in 600AD as the border, to keep the Welsh out of Britain. Now they need to keep the snobbish English out of Wales.

Dave Hughes dave@oldcolo.com"

___

You can find Dave's website at

http://wireless.oldcolo.com/

I have dabbled in these areas and have great respect for the folks who have pulled off serious projects. It isn't easy and the technology is the least of your problems.
6:10:44 AM    



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