brainwagon "There is much pleasure in useless knowledge." — Bertrand Russell

15Dec/04Off

MoleSter – a tiny file-sharing application

Not to be outdone, Matthew Skala one-upped Ed by creating MoleSter - a tiny file-sharing application. I wonder if it works... 🙂

Addendum: As my wife points out, it's not a very attractive name. What's really amazing is that I didn't pick up on it.

15Dec/04Off

TinyP2P

Ed Felton of freedom-to-tinker has released a tiny 15 line Python program called TinyP2P which allows you to create a simple (if not secure or scaleable) file sharing network. Get the code here. It's cute, and might not be bad for tiny bits of file sharing.

Addendum: Actually trying to run it, I got

localhost - - [15/Dec/2004 15:53:33] "POST /RPC2 HTTP/1.0" 200 -
Traceback (most recent call last):
  File "../tinyp2p.py", line 14, in ?
    for url in pxy(ar[3]).f(pw(ar[3]),0,[]):
  File "/u0/markv/my-python/lib/python2.3/xmlrpclib.py", line 1029, in __call__
    return self.__send(self.__name, args)
  File "/u0/markv/my-python/lib/python2.3/xmlrpclib.py", line 1316, in __request    verbose=self.__verbose
  File "/u0/markv/my-python/lib/python2.3/xmlrpclib.py", line 1080, in request
    return self._parse_response(h.getfile(), sock)
  File "/u0/markv/my-python/lib/python2.3/xmlrpclib.py", line 1219, in _parse_response
    return u.close()
  File "/u0/markv/my-python/lib/python2.3/xmlrpclib.py", line 742, in close
    raise Fault(**self._stack[0])
xmlrpclib.Fault: 

15Dec/04Off

The Future of Scanners?

Gizmodo had a link to a flexible book scanner, basically a sheet of plastic filled with organic photodiodes and phototransistors that act as a scanner. Chasing down links for a meatier description, I found Semiconductor International - Organic Devices on Flexible Substrates Advance - 11/1/2004 - Semiconductor International - CA476270

In other work to be presented at IEDM, researchers from the University of Tokyo have developed a large-area, flexible and lightweight sheet image scanner integrated with organic field-effect transistors and organic photodiodes (Figure ). The scanner is made of cells that consist of an organic transistor and organic photodetector, with an effective sensing area of 50 x 50 um2. The entire imager has an effective sensing area of 2 in. and resolution of 36 dots per inch (dpi), with the potential to go up to 250 dpi. The photodetectors distinguish between black and white by sensing the difference in reflected light from black and white parts of an image. The thin-film pentacene transistors have 180 um channel lengths and electron mobilities of 0.7 cm2/Vsec.

The current 36dpi resolution isn't very interesting, but 250dpi sounds pretty good. I wonder if it will be here before electronic paper...

Filed under: Science Comments Off
15Dec/04Off

Book Scanning Robot

Ever wonder how they hope to digitize millions of books? Try looking at this film showing a book scanning robot working for archive.org. You can get more real information from the manufacturer's website, albeit in the form of a bit of a sales pitch.

15Dec/04Off

Bunny Cinema for Christmas

The classic It's a Wonderful Life, directed by Frank Capra, but starring bunnies, and taking only 30 seconds.

Caution: Didn't work for me in Firefox.