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Need info

ArchiverArchiver Posts: 46,084
edited 2001-11-24 01:52 in General Discussion
I need to order a stamp or two, not yet sure if i need two of them or
not. I need to control four modified servo's, I'm thinking of
unloading some of the work off the stamp by using a Pak8 pulsout IC.
Speed is my main concern so i'm wondering if two stamps would be
benificial, would it make enough of a difference to justify the cost?
In no order of importance (they all are):
1. Can ramping be used effectively with the Pak8? Would use using the
stamp for ramp loops not defeat the purpose of using the Pak co-pro.?
2. Can the Pak8 multitask, or can it only pulse one servo at a time,
like a stamp would do???
3. Can it send different pulses to the different servo's?? (2
forward, 2 reverse)???
4. Any comments on the most efficient way of having ramp up/down
incorporated, keeping in mind the second the IR see's something it
has to react, not keep running ramp loops. I don't have IR sensors
that can sense distance so its' on/off. (sharp radio shack digital
sensors). Should i just forget the ramp idea, how bad is full
on /full off on the servo's? they don't have to last for decades, but
a good 100 hours of R&D time for example.

Please help me out with this I need to get started on it asap and
dont' want to be buying what i dont' need. Thanks

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2001-11-24 01:52
    You may want to check out the "Digital Servo Controller" from Ohmark
    http://www.ohmark.co.nz/robot.htm
    The "rate" command they use is the same as "ramp". You can download
    the manual in "PDF" format from this link
    http://www.ohmark.co.nz/dscdown.htm
    I'm using the DCS to drive the servos in my robot and have had no
    problems with it

    Hope this helps
    Dan



    --- In basicstamps@y..., cbielek@y... wrote:
    > I need to order a stamp or two, not yet sure if i need two of them
    or
    > not. I need to control four modified servo's, I'm thinking of
    > unloading some of the work off the stamp by using a Pak8 pulsout
    IC.
    > Speed is my main concern so i'm wondering if two stamps would be
    > benificial, would it make enough of a difference to justify the
    cost?
    > In no order of importance (they all are):
    > 1. Can ramping be used effectively with the Pak8? Would use using
    the
    > stamp for ramp loops not defeat the purpose of using the Pak co-
    pro.?
    > 2. Can the Pak8 multitask, or can it only pulse one servo at a
    time,
    > like a stamp would do???
    > 3. Can it send different pulses to the different servo's?? (2
    > forward, 2 reverse)???
    > 4. Any comments on the most efficient way of having ramp up/down
    > incorporated, keeping in mind the second the IR see's something it
    > has to react, not keep running ramp loops. I don't have IR sensors
    > that can sense distance so its' on/off. (sharp radio shack digital
    > sensors). Should i just forget the ramp idea, how bad is full
    > on /full off on the servo's? they don't have to last for decades,
    but
    > a good 100 hours of R&D time for example.
    >
    > Please help me out with this I need to get started on it asap and
    > dont' want to be buying what i dont' need. Thanks
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