Blown ports : in english
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Posts: 46,084
course,
I always use a 1k resistor (in series) with the ports of my BS2e. Stamps are
just too expensive to blow during one of those bad nights. A 1k resitor
offers a very simple protection for statical electricity and program bugs:
if you would swap an Input/Output the current through your Basic Stamp would
now be limited to 5V/1k=5mA < 20mA.
good luck!
happy stamping,
Matthijs Boerlage
Original Message
From: Boerlage, M.L.G. [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=LbaML4rTq_wrBP7r46lLX1oQEzcIPyJTes-BAElhgyTbX1-1oAeRLkYUXerdbsFvWuby-r3moNBUYRrO67z2BzkfPA]M.L.G.Boerlage@s...[/url
Sent: Monday, January 21, 2002 6:28 AM
To: 'basicstamps@yahoogroups.com'
Subject: RE: [noparse][[/noparse]basicstamps] Blown ports : in dutch
tuurlijk.
ik gebruik zelfs altijd een 1k weerstand in serie met de poorten van
mijn
BS2e. Die stamps zijn net iets te duur om door een stommiteit op te
blazen.
Een weerstand is een hele eenvoudige bescherming voor statische
electriciteit en program bugs: Input/Output verwisselen zorgt voor grote
stroom door de Basic Stamp, nu beperkt tot 5V/1k=5mA < 20mA.
succes ermee,
Matthijs Boerlage
Original Message
From: De Meester, Michel [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=UDjp_DJPV7XgBDgq2Dpj5pi__CFnn8RQ2NjHTPbgZaC_743VdAOH3S351eZzTUXhIFtlax37AyII5-RrBFS-DNOkzAlD]Michel.De.Meester@u...[/url
Sent: Monday, January 21, 2002 08:52
To: 'basicstamps@yahoogroups.com'
Subject: [noparse][[/noparse]basicstamps] Blown ports
Hello Stampers,
Sorry for My English but I live in the Dutch speaking part of Belgium
;-)
I blew up two ports of my BS2P40, I don't know why, one was directly
connected to a serial LCD, the other was connected via a 4k7 to the +5V
as
input for a dallas Ibutton).
Probably there was something wrong with the ground connection between
the
PCB's.
My question, can I put a 1k resistor in serie with the LCD line and
iButton
line, acting as a current limiter in case something goes wrong?
Thanks in advance,
Michel De Meester
Met vriendelijke groetjes,
> ************************************************
> Michel De Meester
> Biotechnisch Onderhoud
> Universitair Ziekenhuis Antwerpen
> Wilrijkstraat 10
> 2650 Edegem - B
> tel: ++32 (0)3 821 36 47
> e-mail: michel.de.meester@u...
>
> *************************************************
>
>
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I always use a 1k resistor (in series) with the ports of my BS2e. Stamps are
just too expensive to blow during one of those bad nights. A 1k resitor
offers a very simple protection for statical electricity and program bugs:
if you would swap an Input/Output the current through your Basic Stamp would
now be limited to 5V/1k=5mA < 20mA.
good luck!
happy stamping,
Matthijs Boerlage
Original Message
From: Boerlage, M.L.G. [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=LbaML4rTq_wrBP7r46lLX1oQEzcIPyJTes-BAElhgyTbX1-1oAeRLkYUXerdbsFvWuby-r3moNBUYRrO67z2BzkfPA]M.L.G.Boerlage@s...[/url
Sent: Monday, January 21, 2002 6:28 AM
To: 'basicstamps@yahoogroups.com'
Subject: RE: [noparse][[/noparse]basicstamps] Blown ports : in dutch
tuurlijk.
ik gebruik zelfs altijd een 1k weerstand in serie met de poorten van
mijn
BS2e. Die stamps zijn net iets te duur om door een stommiteit op te
blazen.
Een weerstand is een hele eenvoudige bescherming voor statische
electriciteit en program bugs: Input/Output verwisselen zorgt voor grote
stroom door de Basic Stamp, nu beperkt tot 5V/1k=5mA < 20mA.
succes ermee,
Matthijs Boerlage
Original Message
From: De Meester, Michel [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=UDjp_DJPV7XgBDgq2Dpj5pi__CFnn8RQ2NjHTPbgZaC_743VdAOH3S351eZzTUXhIFtlax37AyII5-RrBFS-DNOkzAlD]Michel.De.Meester@u...[/url
Sent: Monday, January 21, 2002 08:52
To: 'basicstamps@yahoogroups.com'
Subject: [noparse][[/noparse]basicstamps] Blown ports
Hello Stampers,
Sorry for My English but I live in the Dutch speaking part of Belgium
;-)
I blew up two ports of my BS2P40, I don't know why, one was directly
connected to a serial LCD, the other was connected via a 4k7 to the +5V
as
input for a dallas Ibutton).
Probably there was something wrong with the ground connection between
the
PCB's.
My question, can I put a 1k resistor in serie with the LCD line and
iButton
line, acting as a current limiter in case something goes wrong?
Thanks in advance,
Michel De Meester
Met vriendelijke groetjes,
> ************************************************
> Michel De Meester
> Biotechnisch Onderhoud
> Universitair Ziekenhuis Antwerpen
> Wilrijkstraat 10
> 2650 Edegem - B
> tel: ++32 (0)3 821 36 47
> e-mail: michel.de.meester@u...
>
> *************************************************
>
>
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
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To UNSUBSCRIBE, just send mail to:
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