auto-reset?
Archiver
Posts: 46,084
I'm powering a 7-segment display with my basic stamp (the type of
display that takes 7 pins on my basic stamp, because im not using a
driver). So I run vdd to the power pin on the display, then attach
all 7 led pins to pins 0 - 6 on my basic stamp. Then I write a
program that sets all those pins to low output.
It works like it should, but every so often the display (and main
power light on the boe) flash off and on really quickly... why is
this? My guess is that for some reason the stamp is auto-resetting
itself... am i sinking too much current with my stamp?
Thanks for the help
Greg
display that takes 7 pins on my basic stamp, because im not using a
driver). So I run vdd to the power pin on the display, then attach
all 7 led pins to pins 0 - 6 on my basic stamp. Then I write a
program that sets all those pins to low output.
It works like it should, but every so often the display (and main
power light on the boe) flash off and on really quickly... why is
this? My guess is that for some reason the stamp is auto-resetting
itself... am i sinking too much current with my stamp?
Thanks for the help
Greg
Comments
If not you are probably overloading the power supply and it is shutting down
due to overload.
Eric
Original Message
From: "GregT2" <gregt@t...>
To: <basicstamps@yahoogroups.com>
Sent: Friday, September 06, 2002 4:59 PM
Subject: [noparse][[/noparse]basicstamps] auto-reset?
> I'm powering a 7-segment display with my basic stamp (the type of
> display that takes 7 pins on my basic stamp, because im not using a
> driver). So I run vdd to the power pin on the display, then attach
> all 7 led pins to pins 0 - 6 on my basic stamp. Then I write a
> program that sets all those pins to low output.
>
> It works like it should, but every so often the display (and main
> power light on the boe) flash off and on really quickly... why is
> this? My guess is that for some reason the stamp is auto-resetting
> itself... am i sinking too much current with my stamp?
>
> Thanks for the help
> Greg
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
pin. I have no resisters between the grounded pins and the stamp's
outputs... is this bad? That would be a lot of resistors...
thanks
Greg
--- In basicstamps@y..., "Eric Adams" <hugs102@b...> wrote:
> You didn't mention a current limiting resistors at all. Are you
using them?
> If not you are probably overloading the power supply and it is
shutting down
> due to overload.
>
> Eric
>
Original Message
> From: "GregT2" <gregt@t...>
> To: <basicstamps@y...>
> Sent: Friday, September 06, 2002 4:59 PM
> Subject: [noparse][[/noparse]basicstamps] auto-reset?
>
>
> > I'm powering a 7-segment display with my basic stamp (the type of
> > display that takes 7 pins on my basic stamp, because im not using
a
> > driver). So I run vdd to the power pin on the display, then attach
> > all 7 led pins to pins 0 - 6 on my basic stamp. Then I write a
> > program that sets all those pins to low output.
> >
> > It works like it should, but every so often the display (and main
> > power light on the boe) flash off and on really quickly... why is
> > this? My guess is that for some reason the stamp is auto-resetting
> > itself... am i sinking too much current with my stamp?
> >
> > Thanks for the help
> > Greg
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@y...
> > from the same email address that you subscribed. Text in the
Subject and
> Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >