boe & servo problem

Archiver

Tad-

Your b2 variable is a byte variable. As such, it can only hold a
value from 0 through 255. On the BS2 and beyond, it's better to
declare and size your own variables than to use b1, w1, etc.
Suggested modification:


i VAR WORD
j VAR BYTE

again:
for i = 500 to 1000
for j = 1 to 5
pulsout 15, i
pause 15
next
next
goto again


Regards,

Steve

On 29 Oct 01 at 19:17, tadspambait@y... wrote:

> ...i'm attempting to use parallax servos with a BOE Rev. B. I
> hooked up the servos to the 3-pin ports on the BOE, and used
> the following tester code (modified from scott edwards' original):
>
> again:
> for b2 = 500 to 1000
> for b3 = 1 to 5
> pulsout 15, b2
> pause 15
> next
> next
> goto again

Archiver

howdy folks:

first off, i should admit that i am a complete newbie, and am
prone to asking silly questions... your indulgance is appreciated
;-)

i'm attempting to use parallax servos with a BOE Rev. B. I
hooked up the servos to the 3-pin ports on the BOE, and used
the following tester code (modified from scott edwards' original):

again:
for b2 = 500 to 1000
for b3 = 1 to 5
pulsout 15, b2
pause 15
next
next
goto again

the servos have behaved erratically, or not at all.

i have tried several servos & each of the 4 ports (corresponding
to pins 12, 13, 14, 15). i'm fairly confident that i have them
connected properly, so i assume the problem is either with my
code, or with the servos themselves (or with the bs2, but that
seems to be operating correctly with other applications).

does the code look ok? if so, any suggestions on other ways of
testing the servos?

thanks,
tad

Archiver

Are you useing it off the power supply? If you are then you just fried
them. email parallax. I had that same problem too. The power supply is
giving out too much voltage and it is frying it. parallax should send
you a new one.

from
Tad

(hmmmmm same name. I wonder......)

tadspambait@y... wrote:

>howdy folks:
>
>first off, i should admit that i am a complete newbie, and am
>prone to asking silly questions... your indulgance is appreciated
>;-)
>
>i'm attempting to use parallax servos with a BOE Rev. B. I
>hooked up the servos to the 3-pin ports on the BOE, and used
>the following tester code (modified from scott edwards' original):
>
>again:
>for b2 = 500 to 1000
> for b3 = 1 to 5
> pulsout 15, b2
> pause 15
> next
>next
>goto again
>
>the servos have behaved erratically, or not at all.
>
>i have tried several servos & each of the 4 ports (corresponding
>to pins 12, 13, 14, 15). i'm fairly confident that i have them
>connected properly, so i assume the problem is either with my
>code, or with the servos themselves (or with the bs2, but that
>seems to be operating correctly with other applications).
>
>does the code look ok? if so, any suggestions on other ways of
>testing the servos?
>
>thanks,
>tad
>
>
>
>
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Archiver

i hope you're right, since the other reply to my post indicates that
the servos are fried!

i guess the bs compiler doesn't throw exceptions?

thanks for your help,
tad

--- In basicstamps@y..., "S Parkis" <parkiss@e...> wrote:
> Tad-
>
> Your b2 variable is a byte variable. As such, it can only hold a
> value from 0 through 255. On the BS2 and beyond, it's better to
> declare and size your own variables than to use b1, w1, etc.
> Suggested modification:
>
>
> i VAR WORD
> j VAR BYTE
>
> again:
> for i = 500 to 1000
> for j = 1 to 5
> pulsout 15, i
> pause 15
> next
> next
> goto again
>
>
> Regards,
>
> Steve
>
> On 29 Oct 01 at 19:17, tadspambait@y... wrote:
>
> > ...i'm attempting to use parallax servos with a BOE Rev. B. I
> > hooked up the servos to the 3-pin ports on the BOE, and
used
> > the following tester code (modified from scott edwards'
original):
> >
> > again:
> > for b2 = 500 to 1000
> > for b3 = 1 to 5
> > pulsout 15, b2
> > pause 15
> > next
> > next
> > goto again