SV: [basicstamps] attaching a relay on an output pin
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Posts: 46,084
Greetings!
Reed relays never pull any significant power, and are most often used to
detect power or a nearby magnet. Unlike a normal relay they don't have a
coil, and it's that piece which causes the problems. (Coils tends to 'do
things' to voltage transitions)
So, unless you trigged the Reed relays with a coild that was driven from
the Stamp, there's no problem. (Or so I hope)
:-)
Trygve
Opprinnelig melding
Fra: Sean T. Lamont .lost. [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=Q6HpzheUD_Lw_47DW5aYa_KSaQPvpQrfeI4tnDvUH-o_iRF59p6P-b3zfQrZgMATXs7QIdiEDtA_SRUxM1UFfN4]lamont@a...[/url
Sendt: 26. november 2003 20:49
Til: basicstamps@yahoogroups.com
Emne: RE: [noparse][[/noparse]basicstamps] attaching a relay on an output pin
I don't know if this is relevant, but I've hooked up reed relays (with
<25ma draw) to stamp pins directly, no problems whatsoever. I designed
some electronics for a system that did hydrogen-oxygen hydrolysis and a
timed explosion of gas.
On Wed, 26 Nov 2003, Jim Forkin wrote:
> check out http://www.geocities.com/jimforkin2003/ for schematics to
> hook up relays, lamps, etc. to stamps. jim
>
>
>
Original Message
> From: STEVE JOHNSON [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=8DISyFrnbTydAFCShtL8KbI_hInrw1ZPRsMkEbod3TFJSOAFQfsGExlFDlEJkZq4zDYF1ssczFgakCYagEw]cmmdrdata@c...[/url
> Sent: Wednesday, November 26, 2003 10:14 AM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] attaching a relay on an output pin
>
>
> Hi, I'm no stamp expert but I do have an electronics background and
> I'm guessing that the stamp is not sourcing enough current for the
> relay. Relay's typically take a substantial amount of current to
> trigger. You might try looking at the specs for the relay and the
> output pin of
> the stamp that you are using. Probably you will have to
> use a transistor to switch a high current to the coil of
> the relay using the stamp as the trigger. Let me know if
> you need more information.
>
>
> On Wed, 26 Nov 2003 05:35:00 -0000
> "jeff_alten" <jeffalten@h...> wrote:
> >Hi, I'm trying to attach a 6vdc trigger industrial
> >strength coil
> >relay to an output on my basic stamp 2. It is being used
> >to control
> >the on/off of a 110 volts, 6 amps ac motor. But right now i'm just
> >stuck at making sure the relay works. I'v tested the
> >relay that I
> >was planning to use and it works fine with a manual
> >switch. But when
> >I hooked it up to the stamp it won't switch states. The
> >led attached
> >to the same output is going from low to high, but the
> >relay is not
> >following, it is getting power it's just not being
> >triggered. I
> >don't know what I'm missing? I would appreaciate any and
> >all
> >suggestions...Oh and I did have it hooked up to an opto
> >isolater 4n32
> >but it didn't work so I began to strip it down and now
> >I'm just as
> >confused as ever.
> >
> >thanks jeff
> >
> >
> >
> >To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
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> >and Body of the message will be ignored.
> >
> >
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> >
> >
>
>
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>
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
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Reed relays never pull any significant power, and are most often used to
detect power or a nearby magnet. Unlike a normal relay they don't have a
coil, and it's that piece which causes the problems. (Coils tends to 'do
things' to voltage transitions)
So, unless you trigged the Reed relays with a coild that was driven from
the Stamp, there's no problem. (Or so I hope)
:-)
Trygve
Opprinnelig melding
Fra: Sean T. Lamont .lost. [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=Q6HpzheUD_Lw_47DW5aYa_KSaQPvpQrfeI4tnDvUH-o_iRF59p6P-b3zfQrZgMATXs7QIdiEDtA_SRUxM1UFfN4]lamont@a...[/url
Sendt: 26. november 2003 20:49
Til: basicstamps@yahoogroups.com
Emne: RE: [noparse][[/noparse]basicstamps] attaching a relay on an output pin
I don't know if this is relevant, but I've hooked up reed relays (with
<25ma draw) to stamp pins directly, no problems whatsoever. I designed
some electronics for a system that did hydrogen-oxygen hydrolysis and a
timed explosion of gas.
On Wed, 26 Nov 2003, Jim Forkin wrote:
> check out http://www.geocities.com/jimforkin2003/ for schematics to
> hook up relays, lamps, etc. to stamps. jim
>
>
>
Original Message
> From: STEVE JOHNSON [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=8DISyFrnbTydAFCShtL8KbI_hInrw1ZPRsMkEbod3TFJSOAFQfsGExlFDlEJkZq4zDYF1ssczFgakCYagEw]cmmdrdata@c...[/url
> Sent: Wednesday, November 26, 2003 10:14 AM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] attaching a relay on an output pin
>
>
> Hi, I'm no stamp expert but I do have an electronics background and
> I'm guessing that the stamp is not sourcing enough current for the
> relay. Relay's typically take a substantial amount of current to
> trigger. You might try looking at the specs for the relay and the
> output pin of
> the stamp that you are using. Probably you will have to
> use a transistor to switch a high current to the coil of
> the relay using the stamp as the trigger. Let me know if
> you need more information.
>
>
> On Wed, 26 Nov 2003 05:35:00 -0000
> "jeff_alten" <jeffalten@h...> wrote:
> >Hi, I'm trying to attach a 6vdc trigger industrial
> >strength coil
> >relay to an output on my basic stamp 2. It is being used
> >to control
> >the on/off of a 110 volts, 6 amps ac motor. But right now i'm just
> >stuck at making sure the relay works. I'v tested the
> >relay that I
> >was planning to use and it works fine with a manual
> >switch. But when
> >I hooked it up to the stamp it won't switch states. The
> >led attached
> >to the same output is going from low to high, but the
> >relay is not
> >following, it is getting power it's just not being
> >triggered. I
> >don't know what I'm missing? I would appreaciate any and
> >all
> >suggestions...Oh and I did have it hooked up to an opto
> >isolater 4n32
> >but it didn't work so I began to strip it down and now
> >I'm just as
> >confused as ever.
> >
> >thanks jeff
> >
> >
> >
> >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/
>
>
>
> 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/