Re: Robostix issues

On 7/12/05, Brian Davidson <bdavids1@xxxxxxx> wrote:
> My Robostix arrived yesterday, and I've started playing with it this
> evening.  I've come across a couple of issues:
> 
> 1. The Board and Motor pins are in the way of the MMC

The short MMC card I purchased from the gumstix store does not
interfere with the pins...  I have no doubt that a conventional card
would have trouble though.

> 2. The servo pins, A/D pins, port C pins and interrupt pins are too
> close to the Gumstix board.  I can't plug in a servo and the Gumstix at
> the same time...

My Hitec servos connect without interference.  Futaba servos have a
tab on the connector to ensure correct polarity - JR and Hitec just
have small bevels on one side of the connector instead.  From the
tight fit I'm seeing with my servos, I suspect that there isn't room
for Futaba servo connectors.  However, the tabs on Futaba servos are
easily removed with a razor. :-)

One issue I am seeing is that the far end of the Gumstix interferes
slightly (maybe .5mm) with the housing for the Robostix power
connector.  The Gumstix board doesn't lay flat without a bit of
pressure pushing toward the PWM connectors.  I suspect that one of the
Hirose connectors is probably just a little bit misaligned, but I
can't tell which one.  This is probably just a cosmetic issue - I
haven't powered up yet but I don't expect any trouble.  I'll just let
the far end of Gumstix board sit above the power connector housing... 
it actually doesn't quite touch because the Gumstix board is slightly
bowed.

-- 

Nate Waddoups
Redmond WA USA
http://www.natew.com/   <== for nerds
http://www.featherforum.com/   <== for birds


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