Subject:
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Re: encoders and analog ports
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 8 Jul 1999 19:13:06 GMT
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Original-From:
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Fred Martin <fredm@media=StopSpam=.mit.edu>
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Viewed:
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1346 times
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my shaft encoder routines are not compatible with the old servo routines.
please try the new servo routines at
http://el.www.media.mit.edu/projects/handy-board/software/libs.html
fred
> hi there
>
> i'm not yet receiving this list so could any replies please not leave
> out my direct email.
>
> my problem is thus.
>
> i've got 5 of the hb's analog ports used by ldr's. they all work fine
> and have done so as line detectors for 3 years now.
>
> i have just recently ripped a mouse apart and am trying to have a shaft
> encoder.
>
> this has also been successful to a certain degree. using the hb
> fencdr0.icb i get a nice velocity and everything is fine with the
> encoder part.
>
> however i've found that having the fencdr0.icb loaded the ldr's which
> are attached to the other analog ports are returning wild readings. if i
> manually in ic, read the sensors analog(1); and such they read back ok.
> but since i have my sensor code in a spawned process maybe this has
> something to do with it??
>
> so i'm assuming that the fencdr0.icb is somehow interfering with the ldr
> analog readings. spurious readings mean no robot = can't have encoder
> running at the same time. bugger.
>
> has anyone else every run across this problem. i did a search using the
> cool mailing search provided and was a bit swamped.
>
> thanks
> aaron.
> --
> _____________________________________________________________________
> Aaron Dwyer
> http://members.xoom.com/aarondwyer
>
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Message has 1 Reply:
 | | Re: encoders and analog ports
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| thanks fred. i'm now using the servo_a7.icb routines to drive my servo. i am still experiencing problems with the analog ports. i have cascading if then else statements that yield varying responses from my 5 analog ldr's. i have put printf's (...) (26 years ago, 9-Jul-99, to lugnet.robotics.handyboard)
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