interfacing
doesn anyone have information about interfacing a stamp with an iButton?
Also, i would like information about connecting sram to the stamp.
-
Ian Bobbitt
When an error occures:
A novice user blames himself,
a normal user blames the computer,
a power user sighs and gets another cup of coffee.
KB9VEX
ICQ: 14106680
It said requires windows 95 or better, so I installed Linux.
Also, i would like information about connecting sram to the stamp.
-
Ian Bobbitt
When an error occures:
A novice user blames himself,
a normal user blames the computer,
a power user sighs and gets another cup of coffee.
KB9VEX
ICQ: 14106680
It said requires windows 95 or better, so I installed Linux.
Comments
Since building a Stamp and interface, I have been having programs
either locking or acting strangely.
Power is taken from a 6V stablised supply and put thro' a 7805
regulator. The programs down load ok, and the output is sent to a
octagonal driver ULN2003. If the outputs drive LEDs then everything
is ok, but when I try to drive 6V light bulbs, then the problems
begin.Any suggestions?
Alan Whyte
>HELP!
>Since building a Stamp and interface, I have been having programs
>either locking or acting strangely.
>Power is taken from a 6V stablised supply and put thro' a 7805
>regulator. The programs down load ok, and the output is sent to a
>octagonal driver ULN2003. If the outputs drive LEDs then everything
>is ok, but when I try to drive 6V light bulbs, then the problems
>begin.Any suggestions?
> Alan Whyte
Hi Alan -
The load caused by the surge of the cold filaments drawing current,
until they heat up, is probably causing the Stamp to reset. To prove
if this is the problem, add the following first line to your program:
DEBUG "Started"
If you see that MORE than once during a run, the Stamp is resetting.
Regards,
Bruce Bates
properly. They do make some low drop out (LDO) regulators that are
equivalent and work with just a hair over 5V. LM2940 comes to mind.
So either up your input voltage to the 7805 or swap for a 2940.
Regards,
Al Williams
AWC
* Add a PS/2 keyboard to your Stamp project:
http://www.al-williams.com/awce/pak6.htm
>
Original Message
> From: alan.whyte@l... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=jBEIYsrW-L1Gkr5X_wBGeKUd7uQcpx3HFja3MkzEKZmCotZrKmA9gJ_Y01_LhediueWLEPKoK33Q0scjAgHh4tjRaDOmvuE]alan.whyte@l...[/url
> Sent: Wednesday, January 03, 2001 1:44 PM
> To: basicstamps@egroups.com
> Subject: [noparse][[/noparse]basicstamps] Interfacing
>
>
> HELP!
> Since building a Stamp and interface, I have been having programs
> either locking or acting strangely.
> Power is taken from a 6V stablised supply and put thro' a 7805
> regulator. The programs down load ok, and the output is sent to a
> octagonal driver ULN2003. If the outputs drive LEDs then everything
> is ok, but when I try to drive 6V light bulbs, then the problems
> begin.Any suggestions?
> Alan Whyte
>
>
>
> Date: Wed, 03 Jan 2001 19:44:05 -0000
> From: alan.whyte@l...
> Reply-To: basicstamps@egroups.com
> To: basicstamps@egroups.com
> Subject: [noparse][[/noparse]basicstamps] Interfacing
>
> HELP!
> Since building a Stamp and interface, I have been having programs
> either locking or acting strangely.
> Power is taken from a 6V stablised supply and put thro' a 7805
> regulator. The programs down load ok, and the output is sent to a
> octagonal driver ULN2003. If the outputs drive LEDs then everything
> is ok, but when I try to drive 6V light bulbs, then the problems
> begin.Any suggestions?
> Alan Whyte
>
Check the current requirements of your lights. They probably draw a lot
more than the leds, this is possibly drawing more than your power supply
can currently handle, causing your Stamp to Brown-out and reset, if this
is the case try using a seperate power supply for the lamps but be sure
to make both grounds common. HTH (:-)
-- Jerry A. Covington
jerry@p...
> HELP!
> Since building a Stamp and interface, I have been having programs
> either locking or acting strangely.
> Power is taken from a 6V stablised supply and put thro' a 7805
> regulator. The programs down load ok, and the output is sent to a
> octagonal driver ULN2003. If the outputs drive LEDs then everything
> is ok, but when I try to drive 6V light bulbs, then the problems
> begin.Any suggestions?
> Alan Whyte
PS: If the current drain exceeds the drive capability of the Stamps output
pins you will also need to add driver transistors.
JAC (:-)
--
Jerry A. Covington
jerry@p...
To function correctly, most 7805 need a voltage difference between input and
output of at least 3V at full load.
You have two choices:
1) Discard the 7805 and change your stabilized PS to 5V. (best choice)
2) Maintain the 7805 and change your stabilized PS to 8V.
Regards
ECO
Original Message
From: <alan.whyte@l...>
To: <basicstamps@egroups.com>
Sent: mercredi 3 janvier 2001 20:44
Subject: [noparse][[/noparse]basicstamps] Interfacing
> HELP!
> Since building a Stamp and interface, I have been having programs
> either locking or acting strangely.
> Power is taken from a 6V stablised supply and put thro' a 7805
> regulator. The programs down load ok, and the output is sent to a
> octagonal driver ULN2003. If the outputs drive LEDs then everything
> is ok, but when I try to drive 6V light bulbs, then the problems
> begin.Any suggestions?
> Alan Whyte
>
>
>
>
>
swpitch e.g. turn on/off light?
On Mon, 23 Sep 2002, gareth wrote:
> how would i go about interfacing my bacis stamp with a electric
> swpitch e.g. turn on/off light?
>
>
> 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/
>
>
>
Sean T. Lamont, CTO / Chief NetNerd, Abstract Software, Inc. (ServNet)
Seattle - Bellingham - Vancouver - Portland - Everett - Tacoma - Bremerton
email: lamont@a... WWW: http://www.serv.net
"Do not fear mistakes, There Are None" - Miles Davis
relay?
--- "Sean T. Lamont .lost."
<lamont@a...> wrote:
>
> Relay, solid state relay, or triac.
>
> On Mon, 23 Sep 2002, gareth wrote:
>
> > how would i go about interfacing my bacis
> stamp with a electric
> > swpitch e.g. turn on/off light?
> >
> >
> > 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/
> >
> >
> >
>
> Sean T. Lamont, CTO / Chief NetNerd, Abstract
> Software, Inc. (ServNet)
> Seattle - Bellingham - Vancouver - Portland -
> Everett - Tacoma - Bremerton
> email: lamont@a...
> WWW: http://www.serv.net
> "Do not fear mistakes, There Are None"
> - Miles Davis
>
>
> 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/
>
>
try a serach under business and industrial category,
or
http://search.ebay.com/search/search.dll?MfcISAPICommand=GetResult&query=sol
id+state+relay&ht=1&from=R7&ebaytag1=ebayreg&CATEGORY0=12576&SortProperty=Me
taEndSort
Basically, they have two triacs or two scr's inside that are photosensitive.
These allow AC to flow when you activate them. That uses two leads on one
end, on the other end is a + and - lead which lights up the internal LED to
activate it.
There are also some DC versions too. But these don't use SCR's or triacs.
Original Message
From: Don French [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=5RGb1KCwuJzU4fS0Ze75mS84a2pZ1yzh26op4b8eBKn1Wz9mcobrJTpZ47KfpLWilwee-PXwx9rGiE9VKrY]french_don@y...[/url
Sent: Monday, September 23, 2002 4:15 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] interfacing
Can you provide any examples of a solid-state
relay?
--- "Sean T. Lamont .lost."
<lamont@a...> wrote:
>
> Relay, solid state relay, or triac.
>
> On Mon, 23 Sep 2002, gareth wrote:
>
> > how would i go about interfacing my bacis
> stamp with a electric
> > swpitch e.g. turn on/off light?
> >
> >
> > 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/
> >
> >
> >
>
> Sean T. Lamont, CTO / Chief NetNerd, Abstract
> Software, Inc. (ServNet)
> Seattle - Bellingham - Vancouver - Portland -
> Everett - Tacoma - Bremerton
> email: lamont@a...
> WWW: http://www.serv.net
> "Do not fear mistakes, There Are None"
> - Miles Davis
>
>
> 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/
>
>
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/