Stamp getting very hot
hey everyone,
I have a BS2P40. I have an AC to DC adapter that puts out 5VDC. I
hooked up my stamp with some L293D chips to run stepper motors. Then
I noticed the stamp gets very hot. So hot that you cannot touch it.
I didn't think this was right so I powered down and unhooked all the
I/O. I have everything on a breadboard btw. I powered up the stamp
again and it gets very hot still. Any ideas what could be causing
this?
Thanks,
Greg
I have a BS2P40. I have an AC to DC adapter that puts out 5VDC. I
hooked up my stamp with some L293D chips to run stepper motors. Then
I noticed the stamp gets very hot. So hot that you cannot touch it.
I didn't think this was right so I powered down and unhooked all the
I/O. I have everything on a breadboard btw. I powered up the stamp
again and it gets very hot still. Any ideas what could be causing
this?
Thanks,
Greg
Comments
5VDC? Is it fully regulated? (if it cost less than
$10.00 it's very unlikely that it is fully regulated)
Check voltage both open-circuit and under load.
2. The Stamp should NOT be supplying power to the
L293D chips and the steppers -- they should have
their own connection to power, the Stamp just
provides signal.
You're right, the Stamp should never get so hot
you can't touch it. Some of the BS2SX models
do get warm, but not that hot.
--- In basicstamps@yahoogroups.com, "hwarangdo98" <hwarangdo98@y...>
wrote:
> hey everyone,
> I have a BS2P40. I have an AC to DC adapter that puts out 5VDC. I
> hooked up my stamp with some L293D chips to run stepper motors.
Then
> I noticed the stamp gets very hot. So hot that you cannot touch
it.
> I didn't think this was right so I powered down and unhooked all
the
> I/O. I have everything on a breadboard btw. I powered up the
stamp
> again and it gets very hot still. Any ideas what could be causing
> this?
> Thanks,
> Greg
can't touch it. I would suggest that you disconnect if from all IOs,
and see if you can communicate with it using the editor (of course,
you'll need power).
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: hwarangdo98 [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=GtDuxgvBgxNstrTTItWpLeci_VQ41PhN19fT9ILP_edsMD_EGTMcJ-S_gROIPmBr43HvvLhdWFqIRChNb5_ydQ]hwarangdo98@y...[/url
Sent: Monday, April 19, 2004 11:04 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Stamp getting very hot
hey everyone,
I have a BS2P40. I have an AC to DC adapter that puts out 5VDC. I
hooked up my stamp with some L293D chips to run stepper motors. Then
I noticed the stamp gets very hot. So hot that you cannot touch it.
I didn't think this was right so I powered down and unhooked all the
I/O. I have everything on a breadboard btw. I powered up the stamp
again and it gets very hot still. Any ideas what could be causing
this?
Thanks,
Greg
was applied to the Vdd line there might have been serious damage done to
the BASIC Stamp. Let's hope not....
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: Trygve Henriksen [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=t2m6vrNv55XH26xyywS8OuHtz83gUtFi_fo6Q7JjfKG0atPCrDvmyEJv1kJGpYbIlDwETyYX7p-G-fAGdNKx4YoIFp96DXM]trygve.henriksen@v...[/url
Sent: Tuesday, April 20, 2004 8:22 AM
To: basicstamps@yahoogroups.com
Subject: SV: [noparse][[/noparse]basicstamps] Stamp getting very hot
Greetings!
Is it the ENTIRE BS2P40 which heats up, or just one of the IC's on it?
Is the 5V adapter a 'regulated'/'Stabilised' model?
On which pin are you feeding it into the BS2P
:-)
Trygve
Opprinnelig melding
Fra: hwarangdo98 [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=thJpL-Etfx_QkuMzBxRuX3HkvCd-Q1tc7KDW7Ta8ifPtfvs_wHBwzk7OviBB8ewDw-KNxmamC-u7O9TluKg]hwarangdo98@y...[/url
Sendt: 20. april 2004 06:04
Til: basicstamps@yahoogroups.com
Emne: [noparse][[/noparse]basicstamps] Stamp getting very hot
hey everyone,
I have a BS2P40. I have an AC to DC adapter that puts out 5VDC. I
hooked up my stamp with some L293D chips to run stepper motors. Then
I noticed the stamp gets very hot. So hot that you cannot touch it.
I didn't think this was right so I powered down and unhooked all the
I/O. I have everything on a breadboard btw. I powered up the stamp
again and it gets very hot still. Any ideas what could be causing
this?
Thanks,
Greg
Here is what I did
-I ditched the ac adapter. I am trying to make my unit portable
anyway.
-I could still communicate with the stamp using the adapter, but I
would shut it off quickly because of the high heat.
-It was the Ubicom chip on the stamp that was heating up.
-For a solution, I took a car battery and using resistors I stepped
the voltage down to 7.5 volts. I applied this voltage to the VIN pin
and the ground to VSS. I turned the stamp on for a while and it
never heated up.
-I unhooked all of the I/O
-I know the L293D chips wouldn't cause the stamp to get hot because
they have their own power.
-I really hope that I didn't damage the stamp. This is for my senior
design project due this Friday. I will let everyone know how it
works when I get back home this afternoon.
Thanks for the help,
Greg
--- In basicstamps@yahoogroups.com, "Allan Lane" <allan.lane@h...>
wrote:
> 1. Check the voltage of your adapter. Is it REALLY
> 5VDC? Is it fully regulated? (if it cost less than
> $10.00 it's very unlikely that it is fully regulated)
> Check voltage both open-circuit and under load.
>
> 2. The Stamp should NOT be supplying power to the
> L293D chips and the steppers -- they should have
> their own connection to power, the Stamp just
> provides signal.
>
> You're right, the Stamp should never get so hot
> you can't touch it. Some of the BS2SX models
> do get warm, but not that hot.
>
> --- In basicstamps@yahoogroups.com, "hwarangdo98"
<hwarangdo98@y...>
> wrote:
> > hey everyone,
> > I have a BS2P40. I have an AC to DC adapter that puts out 5VDC.
I
> > hooked up my stamp with some L293D chips to run stepper motors.
> Then
> > I noticed the stamp gets very hot. So hot that you cannot touch
> it.
> > I didn't think this was right so I powered down and unhooked all
> the
> > I/O. I have everything on a breadboard btw. I powered up the
> stamp
> > again and it gets very hot still. Any ideas what could be
causing
> > this?
> > Thanks,
> > Greg
I think my worst fears have been confirmed. I have 6.5 volts to the
VIN on the stamp and now it won't communicate. I think I managed to
fry it. Does Parallax fix broken stamps? What is the turnaround
time?
Thanks,
Greg
--- In basicstamps@yahoogroups.com, "hwarangdo98" <hwarangdo98@y...>
wrote:
> Thanks for the replies everyone.
> Here is what I did
> -I ditched the ac adapter. I am trying to make my unit portable
> anyway.
>
> -I could still communicate with the stamp using the adapter, but I
> would shut it off quickly because of the high heat.
>
> -It was the Ubicom chip on the stamp that was heating up.
>
> -For a solution, I took a car battery and using resistors I stepped
> the voltage down to 7.5 volts. I applied this voltage to the VIN
pin
> and the ground to VSS. I turned the stamp on for a while and it
> never heated up.
>
> -I unhooked all of the I/O
>
> -I know the L293D chips wouldn't cause the stamp to get hot because
> they have their own power.
>
> -I really hope that I didn't damage the stamp. This is for my
senior
> design project due this Friday. I will let everyone know how it
> works when I get back home this afternoon.
>
> Thanks for the help,
> Greg
>
>
>
>
> --- In basicstamps@yahoogroups.com, "Allan Lane" <allan.lane@h...>
> wrote:
> > 1. Check the voltage of your adapter. Is it REALLY
> > 5VDC? Is it fully regulated? (if it cost less than
> > $10.00 it's very unlikely that it is fully regulated)
> > Check voltage both open-circuit and under load.
> >
> > 2. The Stamp should NOT be supplying power to the
> > L293D chips and the steppers -- they should have
> > their own connection to power, the Stamp just
> > provides signal.
> >
> > You're right, the Stamp should never get so hot
> > you can't touch it. Some of the BS2SX models
> > do get warm, but not that hot.
> >
> > --- In basicstamps@yahoogroups.com, "hwarangdo98"
> <hwarangdo98@y...>
> > wrote:
> > > hey everyone,
> > > I have a BS2P40. I have an AC to DC adapter that puts out
5VDC.
> I
> > > hooked up my stamp with some L293D chips to run stepper
motors.
> > Then
> > > I noticed the stamp gets very hot. So hot that you cannot
touch
> > it.
> > > I didn't think this was right so I powered down and unhooked
all
> > the
> > > I/O. I have everything on a breadboard btw. I powered up the
> > stamp
> > > again and it gets very hot still. Any ideas what could be
> causing
> > > this?
> > > Thanks,
> > > Greg