On a related note, does anyone know if the $1 microscope is being successfully used in the field?
http://wiki.laptop.org/go/Microscope On 21 January 2011 10:20, Kevin Gordon <kgordon...@gmail.com> wrote: > Folks: > > We've been able to get the Veho USB 400x 1.3Mp/2.0Mp interpolated to work > on the XO 1 and XO 1.5 under 10.1.3 with 'Cheese'. However, with this high > resolution webcam, you just need to make sure it attaches itself to the USB > 2.0 bus. If for some reason it comes up and attaches to the 1.1 bus, one > gets get what looks like a 1970's color TV test pattern when starting the > camera software.. > > I can't speak to the specifics of the DIgiMicro; we bought a bunch of > different microscope samples from various HK based ebay vendors before > standardizing on the Veho. It is fully uvc compliant and also works on > Ubuntu, Windows and the Mac. On Ubuntu, we use guvcview to control it. Due > to the fact we needed to support multi-continent co-curricula, we needed one > that ran everywhere on everything. It can cost between $40 and $75 from > ebay depending on the day of the week, it seems. Be careful, the one one > wants is the '004' product not the '001' or '004'. > > On the XO, Mikus Grinbergs has since done some magic for us to get guvcview > to load on the XO, since guvcview only has an Fc12, 686 RPM. It gets more > complicated since some of the dependencies for guvcview need the FC12/686 > rpm versions which one has to go out and find manually, while other > dependencies need the FC11/586 standard repo versions. For us, we are still > in the process of bullet-proofing this so young users can mod their 10.1.3 > box to install guvcview. guvcview has way more user-definable parameters > than does Cheese. > > So, for simplicity, one can just install Cheese for now. It works from > Sugar if called from the terminal prompt. It wont run properly as root, > just stay as default OLPC user., dont know why, dont really care. Personally > I run as little as possible as root. A bunch of weird messages come up > once invoked from Sugar, but it does eventually come up. It will flash the > built-in cafe camera light then proceed over to the USB camera. You can > edit the preferences in Cheese to default to the USB camera. If the USB > camera isnt seen in teh camera device drop-down, then for some reason it > isn't being handled properly at the driver level. In terminal, check the > output of the lsusb command, the camera should be seen there with a nice > description and USB vendor./eqpt number. Once you are doen in cheese on the > the sugar side, unfortunately you have to stop it 'inelegantly'' as it has > no sugar activity button. You can use the ctrl-q, or function key back to > the activity wheel and kill it from there. However, this seems to leave a > little stub up and running, so you may have to reboot to get it going again. > > On the other hand the successful yum install of cheese puts itself nicely > into the graphics submenu on the Gnome side, and behaves nicely there. You > can then save your microscope photos ot the fiel system (preferably on an > external SD card or a USB stick, then look at the photos from the Sugar > side. Just remember INSTALL it as root, but run it as the normal default > user. > > Summary. USB uvc compliant webcams (microscopes) should just plug in and be > seen by both the XO 1.0 and XO 1.5. Then yum install cheese, and use the > Gnome side to do any 'photos'. > > All caveats with respect to the snails-pace of the yum install are still in > effect ont the 1.0, we do a yum install downloadonly to a stick on a 1.5 > (which does yum nicely), then yum localinstall from the stick to all the XO > 1.0's to eliminate those install hanging and memory full issues. As an > added benefit, Cheese has no other dependencies when installed to 10.1.3. > > For those who saw our little tech-geek table at the SF summit, this is > exactly what we were demoing on the 1.5. Daniel Drake and Paul Fox have > since done yeomen effort to bring the uvc, sisusb, and ldusb drivers all > back into sync on the 1.0's and 1.5s at 10.1.3 . Have fun, it really is > cool stuff. > > KG > > O n Thu, Jan 20, 2011 at 5:45 PM, Mike Lee <curious...@gmail.com> wrote: >> >> [Copying everyone.] >> >> I haven't tried this with the new 10.1.3. But before that, it didn't >> work on the XO-1 without having to get into kernal hacking. Paul Fox >> confirmed that they are looking into adding support. I don't know if >> they have. >> >> I bought my Digimicro from DealExtreme for $31.10. The catch is they >> ship from Hong Kong (as I recall). It took 3-4 weeks to get the >> 'scope. >> >> >> http://www.dealextreme.com/details.dx/sku.11743 >> >> >> Mike >> >> >> >> On Thu, Jan 20, 2011 at 3:03 PM, Cherry Withers <cwith...@ekindling.org> >> wrote: >> > Mike, >> > >> > I just ordered mine from Amazon. But we were discussing this on our >> > Squeakland meeting today >> > and wondering if you've tried this on the XO 1.0 as well and if you've >> > tried >> > other brands? >> > The Digimicro is hovering around $37-$45 at Amazon (without shipping and >> > tax). Where have you found >> > them for $30? >> > >> > Thank you for your help! >> > --Cherry >> > >> > On Thu, Nov 18, 2010 at 8:14 PM, Mike Lee <curious...@gmail.com> wrote: >> >> >> >> Hi all, >> >> >> >> I ordered this Digimicro 1.3mp USB microscope and it arrived from >> >> China today. I was able to pretty easily get it running on an XO-1.5 >> >> in Gnome. Photos and details here: >> >> >> >> http://www.flickr.com/photos/curiouslee/5188951606/in/photostream/ >> >> http://www.flickr.com/photos/curiouslee/5188951710/in/photostream/ >> >> >> >> Here's the reference I used for the installation: >> >> >> >> >> >> http://www.stealthcopter.com/blog/2010/03/digimicro-200x-zooming-usb-digital-microscope-in-ubuntu-linux/ >> >> >> >> Mike >> >> >> >> >> >> >> >> On Sat, Oct 16, 2010 at 10:49 AM, Beth Santos <b...@waveplace.org> >> >> wrote: >> >> > Interesting microscope I found via Woot! today: >> >> > >> >> > >> >> > >> >> > http://www.suntekstore.com/1-3-mega-pixel-led-usb-digital-microscope-video-camera-10x__-230x-.html?&utm_source=woot&utm_medium=paid&utm_content=deals&utm_campaign=s0003 >> >> > >> >> > For less than a solar panel you could be sending one or more of these >> >> > out >> >> > with every deployment... >> >> > >> >> > Beth >> >> > >> >> > --- >> >> > Beth Santos >> >> > Outreach Coordinator >> >> > Waveplace Foundation >> >> > >> >> > Tel: +1 610 797 3100 x 44 >> >> > Fax: +1 610 797 3199 >> >> > Cell: +1 603 661 1273 >> >> > http://www.waveplace.org >> >> > Waveplace on Facebook >> >> > Twitter: @waveplace >> >> > >> >> > _______________________________________________ >> >> > Health mailing list >> >> > Health@lists.laptop.org >> >> > http://lists.laptop.org/listinfo/health >> >> > >> >> > >> >> _______________________________________________ >> >> Health mailing list >> >> Health@lists.laptop.org >> >> http://lists.laptop.org/listinfo/health >> > >> > >> _______________________________________________ >> Health mailing list >> Health@lists.laptop.org >> http://lists.laptop.org/listinfo/health > > > _______________________________________________ > Devel mailing list > de...@lists.laptop.org > http://lists.laptop.org/listinfo/devel > > _______________________________________________ Health mailing list Health@lists.laptop.org http://lists.laptop.org/listinfo/health