BS2 dead/alive? HELP!
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Posts: 46,084
Hay all you stampers,
After spending hours trying to find the problem and not I thought I'd get
some help, Im working on a small BS2 driven robot, afer I finished
building it I pluged in my pc and got the motors to work !yay! so I wrote a
program to move it around my desk (forward back left then right runnning in
a loop then the problem) downloaded the program to the stamp (note- Ive got
a little led hooked through a resister to the power supply lines) and the
power led start blinking as the motors turned so I new I needed a fresh
battery - unplugged the 9v and popped in a new one and nothing! the power
light turned on but the motors didnt even twitch!, fearing the worst I
popped out the stamp and put it in a spare board of education and hooked it
up to the pc, alt i does indentify that the stamp is there but when you
download a prog it say hardware failure.....help? Is the stamp ok but
the com system cooked? Thanx in advance!
-Alex
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After spending hours trying to find the problem and not I thought I'd get
some help, Im working on a small BS2 driven robot, afer I finished
building it I pluged in my pc and got the motors to work !yay! so I wrote a
program to move it around my desk (forward back left then right runnning in
a loop then the problem) downloaded the program to the stamp (note- Ive got
a little led hooked through a resister to the power supply lines) and the
power led start blinking as the motors turned so I new I needed a fresh
battery - unplugged the 9v and popped in a new one and nothing! the power
light turned on but the motors didnt even twitch!, fearing the worst I
popped out the stamp and put it in a spare board of education and hooked it
up to the pc, alt i does indentify that the stamp is there but when you
download a prog it say hardware failure.....help? Is the stamp ok but
the com system cooked? Thanx in advance!
-Alex
________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com
Comments
Have you checked the current draw on those motors? You might be
overloading the stamps output capacity to sink 25ma. per pin, with a
total (sink) capacity of 50ma. per port. P0 - P8 equals one port, P9
- P15 equals the other port. If you are trying to source the current
through the output pins, the numbers are even lower, 20ma. per pin
and 40ma. per port.
I had a problem with an animate head kit where the requested power
supply was 9 volts at 1 amp. I used a 9 volt, 1 amp regulated
supply. With one or two of the four servos running, the head worked
fine, shortly after the third and fourth servos started the head
would stop moving. I found the supply regulated too well, at exactly
.99A it clamped down and pulled the supply voltage down enough to
cause the stamp to lockup. I ended up using a unregulated 9 volt,
1.5 amp supply and it worked fine.
Hope this helps.
Greg
--- In basicstamps@egroups.com, "Alex Stewart" <robotman5@h...> wrote:
> Hay all you stampers,
> After spending hours trying to find the problem and not I
thought I'd get
> some help, Im working on a small BS2 driven robot, afer I
finished
> building it I pluged in my pc and got the motors to work !yay! so I
wrote a
> program to move it around my desk (forward back left then right
runnning in
> a loop then the problem) downloaded the program to the stamp (note-
Ive got
> a little led hooked through a resister to the power supply lines)
and the
> power led start blinking as the motors turned so I new I needed a
fresh
> battery - unplugged the 9v and popped in a new one and nothing! the
power
> light turned on but the motors didnt even twitch!, fearing the
worst I
> popped out the stamp and put it in a spare board of education and
hooked it
> up to the pc, alt i does indentify that the stamp is there but when
you
> download a prog it say hardware failure.....help? Is the stamp
ok but
> the com system cooked? Thanx in advance!
>
> -Alex
>
______________________________________________________________________
__
> Get Your Private, Free E-mail from MSN Hotmail at
http://www.hotmail.com
stamp with their large current draw. Are you powering your motors from a
separate source? If not, I would highly recommend, as a motor can run a
$3.00 9v batter dry very quickly. I killed my stamp when I was using
serarate power sources and go the common ground mix with power and put 15v
into the stamp. They replaced it for $30 (normally $20, but I got close to
$200 of free stuff because of the mistake). Just a few ideas. Try checking
if the regulator is still good. I.E. 5v coming out of the power pins.
-William
Original Message
From: Alex Stewart <robotman5@h...>
To: <basicstamps@egroups.com>
Sent: Monday, June 19, 2000 10:31 PM
Subject: [noparse][[/noparse]basicstamps] BS2 dead/alive? HELP!
> Hay all you stampers,
> After spending hours trying to find the problem and not I thought I'd get
> some help, Im working on a small BS2 driven robot, afer I finished
> building it I pluged in my pc and got the motors to work !yay! so I wrote
a
> program to move it around my desk (forward back left then right runnning
in
> a loop then the problem) downloaded the program to the stamp (note- Ive
got
> a little led hooked through a resister to the power supply lines) and the
> power led start blinking as the motors turned so I new I needed a fresh
> battery - unplugged the 9v and popped in a new one and nothing! the power
> light turned on but the motors didnt even twitch!, fearing the worst I
> popped out the stamp and put it in a spare board of education and hooked
it
> up to the pc, alt i does indentify that the stamp is there but when you
> download a prog it say hardware failure.....help? Is the stamp ok but
> the com system cooked? Thanx in advance!
>
> -Alex
> ________________________________________________________________________
> Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com
>
>
>
>
>
carrier board it still wont accept a download, the editor says hardware
communications failed but alt i says hardward indentfied?
thanx
-Alex
>From: gjk@x...
>Reply-To: basicstamps@egroups.com
>To: basicstamps@egroups.com
>Subject: [noparse][[/noparse]basicstamps] Re: BS2 dead/alive? HELP!
>Date: Tue, 20 Jun 2000 23:45:12 -0000
>
>Hi Alex
>
>Have you checked the current draw on those motors? You might be
>overloading the stamps output capacity to sink 25ma. per pin, with a
>total (sink) capacity of 50ma. per port. P0 - P8 equals one port, P9
>- P15 equals the other port. If you are trying to source the current
>through the output pins, the numbers are even lower, 20ma. per pin
>and 40ma. per port.
>
>I had a problem with an animate head kit where the requested power
>supply was 9 volts at 1 amp. I used a 9 volt, 1 amp regulated
>supply. With one or two of the four servos running, the head worked
>fine, shortly after the third and fourth servos started the head
>would stop moving. I found the supply regulated too well, at exactly
>.99A it clamped down and pulled the supply voltage down enough to
>cause the stamp to lockup. I ended up using a unregulated 9 volt,
>1.5 amp supply and it worked fine.
>
>Hope this helps.
>
>Greg
>
>
>
>
>--- In basicstamps@egroups.com, "Alex Stewart" <robotman5@h...> wrote:
> > Hay all you stampers,
> > After spending hours trying to find the problem and not I
>thought I'd get
> > some help, Im working on a small BS2 driven robot, afer I
>finished
> > building it I pluged in my pc and got the motors to work !yay! so I
>wrote a
> > program to move it around my desk (forward back left then right
>runnning in
> > a loop then the problem) downloaded the program to the stamp (note-
>Ive got
> > a little led hooked through a resister to the power supply lines)
>and the
> > power led start blinking as the motors turned so I new I needed a
>fresh
> > battery - unplugged the 9v and popped in a new one and nothing! the
>power
> > light turned on but the motors didnt even twitch!, fearing the
>worst I
> > popped out the stamp and put it in a spare board of education and
>hooked it
> > up to the pc, alt i does indentify that the stamp is there but when
>you
> > download a prog it say hardware failure.....help? Is the stamp
>ok but
> > the com system cooked? Thanx in advance!
> >
> > -Alex
> >
>______________________________________________________________________
>__
> > Get Your Private, Free E-mail from MSN Hotmail at
>http://www.hotmail.com
>
>
>
>
>
________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com