#robotics Logs

May 11 2015

09:13 rue_house if you know the lens angle or focal distance you can
09:14 rue_house usually the lens angle can be worked out from the focal distance
09:15 veverak yeah, I suppose I need info about my cameras
09:15 deshipu in the worst case you can measure it
09:16 rue_house some are fixed focus and some are variable
09:30 rue_house so, what do you call an arm with no motors, just potentiometers, thats used for realtime positioning an arm?
09:47 veverak control arm?
09:49 deshipu I'm sure there is a fancy English word exactly for this occassion
09:49 deshipu like, I don't know, wirglet
09:49 deshipu or something
17:09 veverak again
17:09 veverak I am trying to find cheap digital gauge with USB
17:10 veverak again I am at point when it seems much cheaper to buy mechanical, attach webcam to it and do some hacking
17:16 beanbag what kind of gauge
17:18 veverak distance
17:20 veverak http://shop.vogel-germany.de/Measuring-Plates--Dial-Indicators--Comparator-Gauges--Bore-Gauges--Contacts/Dial-Indicators/Digital-Dial-Indicators/Digital-Dial-Indicator--IP65--with-USB-and-mini-USB-data-output-12-7-mm---0-5-inch.html?XTCsid=ef1ede47fc49882c6b9daf27431f66e8
17:23 beanbag oh dunno
17:24 beanbag I seen some cheaper ones that use a android phone or tab for brains
17:26 veverak remember where?
17:26 beanbag home depot they were from ryobi
17:27 beanbag lemme find
17:27 veverak thanks!
17:27 beanbag https://www.ryobitools.com/phoneworks/
17:27 beanbag was around either $50 or $100 not sure
17:27 beanbag mkight been cheaper
17:28 beanbag there's probably non ryobi devices same idea laso
20:58 _moon anyone around
20:59 _moon ?
21:00 _moon does anyone know if a program counter register is the same as instruction pointer?
21:02 _moon seems to be the case
21:02 rue_shop3 hey
21:03 rue_shop3 yea
21:13 _moon your awake
21:14 _moon do you have any 4021 shift registers
21:15 _moon rue
21:19 rue_shop3 let me check
21:23 rue_shop3 I have 2
21:23 _moon cool
21:23 rue_shop3 but they are really ugly
21:23 rue_shop3 how about a 74595?
21:23 _moon lets put one on a parralel port
21:24 _moon does that other chip do the same shit?
21:24 rue_shop3 wait...
21:25 rue_shop3 look up 74als595
21:25 _moon ok
21:27 _moon well the discription seems simular but i think it would have to have matching serial signals
21:27 _moon i dont know if i want to compare :P
21:28 rue_shop3 how about 4094
21:28 _moon you would know better than i would
21:29 rue_shop3 both 4094 and 74--595 are used for serial to parallel
21:29 rue_shop3 do you want to do serial to parallel or parallel to serial?
21:29 _moon i was looking up to see if i could mimic the serial but thats way above me so i figure put one of those chips on an 8bit bus
21:29 rue_shop3 do you want an avr with a generic io library you can hook to a usb port and operate inputs/outputs?
21:29 _moon parrrrrr tooo seir
21:30 _moon and maybe
21:30 rue_shop3 k, do you want to generate rs232 proto serial?
21:30 _moon ok heres the scope of my idea
21:30 _moon and no
21:30 _moon ...
21:30 _moon so
21:31 _moon i want to use that chip on a parralel port to control a Niintendo
21:31 rue_shop3 hmm
21:31 _moon and write something simular to that robo program to translate keybord/ whatever to controlor sognals
21:31 rue_shop3 operate the joystick?
21:31 rue_shop3 nindendoo 64?
21:31 _moon that chip is what the NES uses for its controlor protocal
21:32 _moon first nintendo
21:32 rue_shop3 aaah
21:32 rue_shop3 have a link to a schematic?
21:32 _moon yup
21:32 _moon http://gamesx.com/wiki/lib/exe/fetch.php?media=controls:nesicschem.gif
21:33 rue_shop3 huh
21:34 rue_shop3 well I ahve two beat up 4021
21:34 _moon cool im glad its not a programed thing
21:34 _moon and cool
21:35 _moon can we put it and a d25 on a nice small pcb
21:35 rue_shop3 maybekinda
21:35 _moon where we put the pcb bisket-ness in the middle of the solder side pins
21:36 rue_shop3 http://www.aliexpress.com/item/Free-Shipping-CD4021BE-DIP16-4021-line-HEF4021BP-shift-register-original-authentic/32246117400.html
21:36 rue_shop3 dont want a few do you?
21:36 _moon maybeee
21:36 _moon digikey says 70 cents
21:36 rue_shop3 china says 39c
21:37 _moon hmm
21:37 rue_shop3 dk is +8 shipping
21:37 _moon if i go into production
21:37 rue_shop3 but dk is 1 day wait, china is 22 days
21:37 _moon il get more
21:37 _moon this is for a dream i had round age 11
21:37 _moon network play for NES / SNES
21:37 rue_shop3 http://www.aliexpress.com/item/CD4021-4021-DIP-16/32336148867.html
21:37 rue_shop3 hard to break a $20 on these
21:38 _moon yeah maybe when i get my job back
21:38 rue_shop3 biab
21:38 _moon ???
21:41 rue_shop3 be back in a bit
21:41 _moon k
22:30 rue_shop3 I was back, you didn't say nuttin
23:38 zhanx Evening