2014-11-13 00:01 arhuaco has quit [Remote host closed the connection]
2014-11-13 00:06 arhuaco has joined #qi-hardware
2014-11-13 00:25 astr has quit [Read error: Connection reset by peer]
2014-11-13 02:08 rejon has joined #qi-hardware
2014-11-13 02:39 xiangfu has joined #qi-hardware
2014-11-13 03:28 xiangfu has quit [Remote host closed the connection]
2014-11-13 03:33 atommann has joined #qi-hardware
2014-11-13 04:07 _whitelogger_ has joined #qi-hardware
2014-11-13 04:09 lindi-_ has joined #qi-hardware
2014-11-13 04:10 nicksydney_ has joined #qi-hardware
2014-11-13 04:11 nicksydney_ has quit [Remote host closed the connection]
2014-11-13 04:12 nicksydney has quit [Ping timeout: 244 seconds]
2014-11-13 04:12 _whitelogger has quit [Ping timeout: 272 seconds]
2014-11-13 04:12 lindi- has quit [Ping timeout: 272 seconds]
2014-11-13 04:23 nicksydney has joined #qi-hardware
2014-11-13 04:31 nicksydney_ has joined #qi-hardware
2014-11-13 04:34 nicksydney has quit [Ping timeout: 244 seconds]
2014-11-13 04:46 nicksydney has joined #qi-hardware
2014-11-13 04:47 nicksydney_ has quit [Ping timeout: 244 seconds]
2014-11-13 05:33 wolfspraul has joined #qi-hardware
2014-11-13 07:39 rozzin has quit [Ping timeout: 250 seconds]
2014-11-13 08:23 rozzin has joined #qi-hardware
2014-11-13 08:54 arhuaco has quit [Read error: Connection reset by peer]
2014-11-13 08:55 pcercuei has joined #qi-hardware
2014-11-13 09:11 arhuaco has joined #qi-hardware
2014-11-13 10:15 Nik05 has quit [Ping timeout: 250 seconds]
2014-11-13 10:17 Nik05 has joined #qi-hardware
2014-11-13 10:22 atommann has quit [Quit: Leaving]
2014-11-13 11:31 fmeerkoette has joined #qi-hardware
2014-11-13 11:47 <wpwrak> zrafa: btw, did you get somewhere with the simulator now ?
2014-11-13 12:16 fmeerkoette has quit [Ping timeout: 250 seconds]
2014-11-13 12:23 wpwrak has quit [Read error: Connection reset by peer]
2014-11-13 12:39 astr has joined #qi-hardware
2014-11-13 12:44 wpwrak has joined #qi-hardware
2014-11-13 12:44 <wpwrak> hmm, nouveau driver acting up, it seems. or maybe it's the hardware that went klingon
2014-11-13 12:45 <wpwrak> let's see if i can close the xchat connect dialog ...
2014-11-13 12:45 <wpwrak> phew. this time it worked
2014-11-13 12:47 wpwrak has quit [Read error: No route to host]
2014-11-13 12:48 wpwrak has joined #qi-hardware
2014-11-13 12:48 <wpwrak> well, for a few seconds at least
2014-11-13 12:51 wpwrak has quit [Read error: No route to host]
2014-11-13 13:02 wpwrak has joined #qi-hardware
2014-11-13 13:02 <wpwrak> hmm, strange error patterns
2014-11-13 13:03 <wpwrak> e.g., start mocp in xterm on the nividia -> system freezes
2014-11-13 13:04 <wpwrak> weirder: switched primary to ati, and that one had a hang, too
2014-11-13 13:13 fmeerkoette has joined #qi-hardware
2014-11-13 13:49 fmeerkoette has quit [Ping timeout: 250 seconds]
2014-11-13 14:29 fmeerkoette has joined #qi-hardware
2014-11-13 14:30 astr has quit [Ping timeout: 265 seconds]
2014-11-13 14:54 viric has quit [Ping timeout: 265 seconds]
2014-11-13 14:59 viric has joined #qi-hardware
2014-11-13 15:24 fmeerkoette has quit [Quit: Konversation terminated!]
2014-11-13 15:45 astr has joined #qi-hardware
2014-11-13 16:01 viric has quit [Ping timeout: 255 seconds]
2014-11-13 16:07 viric has joined #qi-hardware
2014-11-13 16:25 <eintopf> mocp :o
2014-11-13 16:48 atommann has joined #qi-hardware
2014-11-13 17:15 atommann has quit [Quit: Leaving]
2014-11-13 17:16 pcercuei has quit [Ping timeout: 255 seconds]
2014-11-13 17:23 <whitequark> wpwrak: testing the limits of my camera. https://i.imgur.com/kF6JRVq.png
2014-11-13 17:23 FDCX has quit [Remote host closed the connection]
2014-11-13 17:39 rz2k has joined #qi-hardware
2014-11-13 18:23 <wpwrak> whitequark: is this a new one ? or the SLR you bought already a good while (> 1 year ?) ago
2014-11-13 18:36 <whitequark> wpwrak: actually that's even a bad pic, let me upload a new one in a moment
2014-11-13 18:36 <whitequark> same camera though
2014-11-13 19:02 rejon has quit [Ping timeout: 250 seconds]
2014-11-13 19:03 <whitequark> wpwrak: http://lab.whitequark.org/notes/2014-11-13/photographing-pcd8544/
2014-11-13 19:06 <wpwrak> nice :) now, on to reverse-synthesizing the netlist :)
2014-11-13 19:07 <whitequark> well, resolution's not high enough
2014-11-13 19:07 <whitequark> I'm going to get an optical microscope.
2014-11-13 19:27 <wpwrak> DocScrutinizer05: i guess that's the sort of camera you should have :)
2014-11-13 19:33 <DocScrutinizer05> yes, I know
2014-11-13 19:36 <eintopf> whats the correct word for a potentiometer which doesn't block
2014-11-13 19:36 <eintopf> newbie question :-)
2014-11-13 19:39 <eintopf> I mean I want to measure the angle of a 360 degree stick mounted at the end at the potentiometer - like this http://walter.bislins.ch/physik/media/Pendel.png
2014-11-13 19:39 <wpwrak> "rotary encoder" ? ;-)
2014-11-13 19:39 <wpwrak> (but such an encoder has has discrete positions)
2014-11-13 19:40 <DocScrutinizer05> such thing doesn't exist
2014-11-13 19:41 <DocScrutinizer05> yes, you can get encoders, but they rarely ever use the potentiometer approach
2014-11-13 19:41 <eintopf> ah okay, so no potentiometer
2014-11-13 19:41 <eintopf> http://en.wikipedia.org/wiki/Rotary_encoder
2014-11-13 19:42 <DocScrutinizer05> rather two 90° phase skewed adjustable capacitors, or recently rather digital encoders
2014-11-13 19:42 <eintopf> but I need more granularity than 8 bit
2014-11-13 19:44 <DocScrutinizer05> when you need more resolution than 8 bit, then how about using a laser mouse looking on a ring mounted to the axis, and have an index marker of some sort (e.g. a hole in ring and a light path sensor) to keep track of the absolute position
2014-11-13 19:45 <eintopf> this sounds too complicated for me
2014-11-13 19:46 <whitequark> that's actually a very high-resolution method
2014-11-13 19:46 <whitequark> you have mice upwards to 8000dpip
2014-11-13 19:46 <whitequark> *dpi
2014-11-13 19:46 <DocScrutinizer05> of course you also can do a binary encoder, but that's for sure even more complicated. BTW usual potentiometers have a resolution quite a bit less than the requested 9 bits
2014-11-13 19:46 <whitequark> and you can make radius as high as you can possibly want
2014-11-13 19:46 <DocScrutinizer05> whitequark: exactly
2014-11-13 19:47 <whitequark> i.e. it essentially offers unlimited resolution
2014-11-13 19:47 <DocScrutinizer05> and shouldn't be any complicated to build either
2014-11-13 19:47 <whitequark> though at some point accumulating error will be a big problem
2014-11-13 19:47 <DocScrutinizer05> optical mice afaik have no systemic accumulating error
2014-11-13 19:47 <eintopf> what the hell is a light path sensor
2014-11-13 19:48 <whitequark> DocScrutinizer05: of course they do
2014-11-13 19:48 <DocScrutinizer05> a thing made of an LED and a light sensor, both form a gap
2014-11-13 19:48 <whitequark> it traverses 1mm, it says it traverses 1.1mm
2014-11-13 19:48 pcercuei has joined #qi-hardware
2014-11-13 19:48 <DocScrutinizer05> that's not systemic accumulating error, that's maybe a calibration factor
2014-11-13 19:49 <whitequark> mmm
2014-11-13 19:49 <DocScrutinizer05> afaik the sensor works with pattern recognition and that has no _error_
2014-11-13 19:49 <whitequark> well, there are two concerns
2014-11-13 19:49 <DocScrutinizer05> when you move the target a million times back and forth for 10mm, it should still shop position:0.0000000
2014-11-13 19:50 <DocScrutinizer05> show*
2014-11-13 19:50 <whitequark> that'd be a different kind of error
2014-11-13 19:50 <DocScrutinizer05> everything else is not error but calibration
2014-11-13 19:51 <DocScrutinizer05> or error introduces by noise/jitter, but that's still not accumulating in this concept afaik
2014-11-13 19:52 <DocScrutinizer05> iow once you calibrated the ting to show 10000cm as 10000cm, it's as accurate as it gets: 1/8000 inch
2014-11-13 19:53 <whitequark> yeah, that makes sense
2014-11-13 19:53 <DocScrutinizer05> the rest are non-linearities but no accumulating errors
2014-11-13 19:55 <eintopf> you mean with index marker some point like 0 degree's and the mouse detects all movements?
2014-11-13 19:55 <DocScrutinizer05> yes
2014-11-13 19:56 <eintopf> this really working on long distance?
2014-11-13 19:56 <eintopf> s/this/do this/
2014-11-13 19:56 <qi-bot> eintopf meant: "do this really working on long distance?"
2014-11-13 19:56 <DocScrutinizer05> such concept obviously needs a setup procedure after power up
2014-11-13 19:56 <DocScrutinizer05> where's a long distance in this design?
2014-11-13 19:57 <DocScrutinizer05> the mouse sensor should hove a 0.5mm over your ring
2014-11-13 19:57 <DocScrutinizer05> hover
2014-11-13 19:57 <eintopf> ah, yes
2014-11-13 19:57 <DocScrutinizer05> or even glide on it
2014-11-13 19:57 <eintopf> I understand
2014-11-13 19:58 <DocScrutinizer05> after poer up you need one full turn of axis to make sure the index marker passed by
2014-11-13 19:58 <eintopf> s/I understand/I see
2014-11-13 19:58 <qi-bot> eintopf meant: "I see"
2014-11-13 19:59 <DocScrutinizer05> a second turn can auto-calibrate the mouse data, you know it's been 360.000° when index marker passing by a second time
2014-11-13 20:00 <DocScrutinizer05> when your mouse reported 36000 clicks until that 2nd index event, you know it has a resolution of 1/10 degree
2014-11-13 20:00 <DocScrutinizer05> err 1/100
2014-11-13 20:01 <DocScrutinizer05> such sensor would be *very* fine grained and accurate
2014-11-13 20:03 <DocScrutinizer05> and you can build it for 25 bucks from material you got in your garage ;-)
2014-11-13 20:04 <whitequark> 25 bucks? how about zero
2014-11-13 20:15 <eintopf> okay, okay. This sounds like a nice solution. Thanks
2014-11-13 20:16 <eintopf> now I need to figure out how I can control the motor of my old scanner device and place a stick on it with some mass at the end. But maybe the motor control is too slow
2014-11-13 20:17 <eintopf> I am sure I could do that with libusb and some control messages
2014-11-13 20:18 <eintopf> for controlling a inverted pendelum...
2014-11-13 20:18 <eintopf> s/a inverted/an inverted
2014-11-13 20:18 <qi-bot> eintopf meant: "for controlling an inverted pendelum..."
2014-11-13 21:00 rz2k has quit []
2014-11-13 21:09 wolfspraul has quit [Quit: leaving]
2014-11-13 21:10 DocScrutinizer05 has quit [Quit: EEEEEEK]
2014-11-13 21:11 DocScrutinizer05 has joined #qi-hardware
2014-11-13 21:15 <kristianpaul> https://www.indiegogo.com/projects/lantern-one-device-free-data-from-space-forever
2014-11-13 21:15 <kristianpaul> What that thing have to no need a dish at all..
2014-11-13 21:51 mooseboobs has joined #qi-hardware
2014-11-13 22:12 astr has quit [Ping timeout: 260 seconds]
2014-11-13 22:42 mooseboobs has quit [Remote host closed the connection]
2014-11-13 22:42 mooseboobs has joined #qi-hardware
2014-11-13 22:45 pcercuei has quit [Ping timeout: 244 seconds]
2014-11-13 23:35 <wpwrak> grmbl. spamprobe started to hang. i don't like the possible pattern. new database, new luck ... for now ...
2014-11-13 23:52 <wpwrak> hmm. nvidia degradation killed xclock. no update to small to potentially cause a hang. i guess i'll go shopping tomorrow ...
2014-11-13 23:59 <zear> kristianpaul, your gps device also doesn't need a dish :)