LCD Distance from BS2...
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Posts: 46,084
Hi Everyone,
Can anybody tell me how far a serial LCD can be from the Basic Stamp 2
that's driving it, assuming you are using good quality cable? I'd like to
mount a 16x2 serial LCD (yep, it's a Scott Edwards) about 300 feet from the
BS2 if possible. Any thoughts?
Thanks,
Tim
Can anybody tell me how far a serial LCD can be from the Basic Stamp 2
that's driving it, assuming you are using good quality cable? I'd like to
mount a 16x2 serial LCD (yep, it's a Scott Edwards) about 300 feet from the
BS2 if possible. Any thoughts?
Thanks,
Tim
Comments
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: Timothy Medema [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=b7NZohVOAWexgNmFyN6EX7nt34m3zuwoJ2HuTpDsBaatFpYwY5CvIBq0QQWV2LSJT_F9EDZri5tSyI7G5AVetGQ]timm@c...[/url
Sent: Monday, April 05, 2004 1:43 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
Hi Everyone,
Can anybody tell me how far a serial LCD can be from the Basic Stamp 2
that's driving it, assuming you are using good quality cable? I'd like
to
mount a 16x2 serial LCD (yep, it's a Scott Edwards) about 300 feet from
the
BS2 if possible. Any thoughts?
Thanks,
Tim
I thought about that, and I know that it would be a good solution, but I'm
trying to keep the cost down as much as possible for this project.
Tim
Original Message
From: "Jon Williams" <jwilliams@p...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, April 05, 2004 5:20 PM
Subject: RE: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
> Thoughts? How about an RF connection?
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: Timothy Medema [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=8aSpTS1KV0uJBkBlJQurbT3m5AsX-OQMHURJkJwH7Omm6I8Vxn1ZX8yMRkSTpnlERq8OIKrFEf_RD3CtlGk]timm@c...[/url
> Sent: Monday, April 05, 2004 1:43 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
>
>
>
> Hi Everyone,
>
> Can anybody tell me how far a serial LCD can be from the Basic Stamp 2
> that's driving it, assuming you are using good quality cable? I'd like
> to
> mount a 16x2 serial LCD (yep, it's a Scott Edwards) about 300 feet from
> the
> BS2 if possible. Any thoughts?
>
> Thanks,
>
> Tim
>
>
> 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.
>
> Yahoo! Groups Links
>
>
>
>
>
had several Intel minis, and would use Telebyte 92 modems to run from
the mini to the terminal. If I remember right, with the baud rate
set down far enough, you could several miles out of them over phone
wire.
I just looked on Ebay, and there are a pair of Black Box modems with
a starting bid of 12.99
Good luck,
Brian
--- In basicstamps@yahoogroups.com, "Tim and Jo" <dema@t...> wrote:
> Hi Jon,
>
> I thought about that, and I know that it would be a good solution,
but I'm
> trying to keep the cost down as much as possible for this project.
>
> Tim
>
>
Original Message
> From: "Jon Williams" <jwilliams@p...>
> To: <basicstamps@yahoogroups.com>
> Sent: Monday, April 05, 2004 5:20 PM
> Subject: RE: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
>
>
> > Thoughts? How about an RF connection?
> >
> > -- Jon Williams
> > -- Applications Engineer, Parallax
> > -- Dallas Office
> >
> >
> >
Original Message
> > From: Timothy Medema [noparse][[/noparse]mailto:timm@c...]
> > Sent: Monday, April 05, 2004 1:43 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
> >
> >
> >
> > Hi Everyone,
> >
> > Can anybody tell me how far a serial LCD can be from the Basic
Stamp 2
> > that's driving it, assuming you are using good quality cable?
I'd like
> > to
> > mount a 16x2 serial LCD (yep, it's a Scott Edwards) about 300
feet from
> > the
> > BS2 if possible. Any thoughts?
> >
> > Thanks,
> >
> > Tim
> >
> >
> > 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.
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
This sounds like a good idea too. I hadn't realized short haul modems were
that inexpensive and I guess that's why I didn't even consider
them. Thanks for pointing that out. If the simple cable run proves to be
unreliable or problematic I'll check into the modems.
Tim
At 11:02 PM 4/5/2004, you wrote:
>You might think about some short haul modems. In a previous life we
>had several Intel minis, and would use Telebyte 92 modems to run from
>the mini to the terminal. If I remember right, with the baud rate
>set down far enough, you could several miles out of them over phone
>wire.
>
>I just looked on Ebay, and there are a pair of Black Box modems with
>a starting bid of 12.99
>
>Good luck,
>Brian
>
>
>--- In basicstamps@yahoogroups.com, "Tim and Jo" <dema@t...> wrote:
> > Hi Jon,
> >
> > I thought about that, and I know that it would be a good solution,
>but I'm
> > trying to keep the cost down as much as possible for this project.
> >
> > Tim
> >
> >
Original Message
> > From: "Jon Williams" <jwilliams@p...>
> > To: <basicstamps@yahoogroups.com>
> > Sent: Monday, April 05, 2004 5:20 PM
> > Subject: RE: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
> >
> >
> > > Thoughts? How about an RF connection?
> > >
> > > -- Jon Williams
> > > -- Applications Engineer, Parallax
> > > -- Dallas Office
> > >
> > >
> > >
Original Message
> > > From: Timothy Medema [noparse][[/noparse]mailto:timm@c...]
> > > Sent: Monday, April 05, 2004 1:43 PM
> > > To: basicstamps@yahoogroups.com
> > > Subject: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
> > >
> > >
> > >
> > > Hi Everyone,
> > >
> > > Can anybody tell me how far a serial LCD can be from the Basic
>Stamp 2
> > > that's driving it, assuming you are using good quality cable?
>I'd like
> > > to
> > > mount a 16x2 serial LCD (yep, it's a Scott Edwards) about 300
>feet from
> > > the
> > > BS2 if possible. Any thoughts?
> > >
> > > Thanks,
> > >
> > > Tim
> > >
> > >
> > > 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.
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
>
>
>
>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.
>
>Yahoo! Groups Links
>
>
>
>
pair for serial signal from one 14c232 to the other,
and another for +5 and supply Gnd. and be sure to use a good bypass cap on both
ends of the +5 and supply Gnd. a .1uf at each end
plus a 100uf to 470uf at the LCD's end.
I have made serial comms over 5 times that distance, and the only problem
encountered was lightning spikes blowing out the 14c232's.
KF4HAZ - Lonnie
From: "Timothy Medema" <timm@c
>
> Hi Brian,
>
> This sounds like a good idea too. I hadn't realized short haul modems were
> that inexpensive and I guess that's why I didn't even consider
> them. Thanks for pointing that out. If the simple cable run proves to be
> unreliable or problematic I'll check into the modems.
>
> Tim
>
>
> At 11:02 PM 4/5/2004, you wrote:
> >You might think about some short haul modems. In a previous life we
> >had several Intel minis, and would use Telebyte 92 modems to run from
> >the mini to the terminal. If I remember right, with the baud rate
> >set down far enough, you could several miles out of them over phone
> >wire.
> >
> >I just looked on Ebay, and there are a pair of Black Box modems with
> >a starting bid of 12.99
> >
> >Good luck,
> >Brian
> >
> >
> >--- In basicstamps@yahoogroups.com, "Tim and Jo" <dema@t...> wrote:
> > > Hi Jon,
> > >
> > > I thought about that, and I know that it would be a good solution,
> >but I'm
> > > trying to keep the cost down as much as possible for this project.
> > >
> > > Tim
> > >
> > >
Original Message
> > > From: "Jon Williams" <jwilliams@p...>
> > > To: <basicstamps@yahoogroups.com>
> > > Sent: Monday, April 05, 2004 5:20 PM
> > > Subject: RE: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
> > >
> > >
> > > > Thoughts? How about an RF connection?
> > > >
> > > > -- Jon Williams
> > > > -- Applications Engineer, Parallax
> > > > -- Dallas Office
> > > >
> > > >
> > > >
Original Message
> > > > From: Timothy Medema [noparse][[/noparse]mailto:timm@c...]
> > > > Sent: Monday, April 05, 2004 1:43 PM
> > > > To: basicstamps@yahoogroups.com
> > > > Subject: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
> > > >
> > > >
> > > >
> > > > Hi Everyone,
> > > >
> > > > Can anybody tell me how far a serial LCD can be from the Basic
> >Stamp 2
> > > > that's driving it, assuming you are using good quality cable?
> >I'd like
> > > > to
> > > > mount a 16x2 serial LCD (yep, it's a Scott Edwards) about 300
> >feet from
> > > > the
> > > > BS2 if possible. Any thoughts?
> > > >
> > > > Thanks,
> > > >
> > > > Tim
Thanks for this information and advise - that sounds like a very reliable
way to go. I haven't heard about a 14c232 before, is that essentially
doing the same job as a MAX232?
Tim
At 07:18 AM 4/6/2004, you wrote:
>300 Ft. is doable at 2400 Baud using a 14c232 and twisted pair cable, use
>one pair for serial signal from one 14c232 to the other,
>and another for +5 and supply Gnd. and be sure to use a good bypass cap on
>both ends of the +5 and supply Gnd. a .1uf at each end
>plus a 100uf to 470uf at the LCD's end.
>I have made serial comms over 5 times that distance, and the only problem
>encountered was lightning spikes blowing out the 14c232's.
>
>KF4HAZ - Lonnie
>
>
From: "Timothy Medema" <timm@c
>
> >
> > Hi Brian,
> >
> > This sounds like a good idea too. I hadn't realized short haul modems were
> > that inexpensive and I guess that's why I didn't even consider
> > them. Thanks for pointing that out. If the simple cable run proves to be
> > unreliable or problematic I'll check into the modems.
> >
> > Tim
> >
> >
> > At 11:02 PM 4/5/2004, you wrote:
> > >You might think about some short haul modems. In a previous life we
> > >had several Intel minis, and would use Telebyte 92 modems to run from
> > >the mini to the terminal. If I remember right, with the baud rate
> > >set down far enough, you could several miles out of them over phone
> > >wire.
> > >
> > >I just looked on Ebay, and there are a pair of Black Box modems with
> > >a starting bid of 12.99
> > >
> > >Good luck,
> > >Brian
> > >
> > >
> > >--- In basicstamps@yahoogroups.com, "Tim and Jo" <dema@t...> wrote:
> > > > Hi Jon,
> > > >
> > > > I thought about that, and I know that it would be a good solution,
> > >but I'm
> > > > trying to keep the cost down as much as possible for this project.
> > > >
> > > > Tim
> > > >
> > > >
Original Message
> > > > From: "Jon Williams" <jwilliams@p...>
> > > > To: <basicstamps@yahoogroups.com>
> > > > Sent: Monday, April 05, 2004 5:20 PM
> > > > Subject: RE: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
> > > >
> > > >
> > > > > Thoughts? How about an RF connection?
> > > > >
> > > > > -- Jon Williams
> > > > > -- Applications Engineer, Parallax
> > > > > -- Dallas Office
> > > > >
> > > > >
> > > > >
Original Message
> > > > > From: Timothy Medema [noparse][[/noparse]mailto:timm@c...]
> > > > > Sent: Monday, April 05, 2004 1:43 PM
> > > > > To: basicstamps@yahoogroups.com
> > > > > Subject: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
> > > > >
> > > > >
> > > > >
> > > > > Hi Everyone,
> > > > >
> > > > > Can anybody tell me how far a serial LCD can be from the Basic
> > >Stamp 2
> > > > > that's driving it, assuming you are using good quality cable?
> > >I'd like
> > > > > to
> > > > > mount a 16x2 serial LCD (yep, it's a Scott Edwards) about 300
> > >feet from
> > > > > the
> > > > > BS2 if possible. Any thoughts?
> > > > >
> > > > > Thanks,
> > > > >
> > > > > Tim
>
>
>
>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.
>
>Yahoo! Groups Links
>
>
>
>
> that's driving it, assuming you are using good quality cable? I'd like to
> mount a 16x2 serial LCD (yep, it's a Scott Edwards) about 300 feet from the
> BS2 if possible. Any thoughts?
I once ran a BS2/LCD remotely from a coaxial cable; I ran 9V to the stamp
across the cable and used a current limited transistor switch to transmit
from the stamp back down the coaxial line. On the power-supply end I checked
the current draw and outputted a TTL to the local CPU's serial in. I only
ran one direction but (in theory) it could have been bi-directional
(half-duplex).
Antidotes aside, what I'm trying to say is that you can probably push RS232
a lot further than you can the LCD driver lines. I'm move the stamp.
--
Enjoy,
George Warner,
Schizophrenic Optimization Scientists
Apple Developer Technical Support (DTS)
I seem to recall the MAX232 requires larger caps for the charge pump.
If you used 2 of it's level shifters and inverted one (using the internal
inverters) you could create differential mode serial TX,
and use a differential-mode-line-receiver or a simple op-amp you could implement
an RS-432 system that would carry serial data over
miles of twisted pair.
KF4HAZ - Lonnie
From: "Timothy Medema" <timm@c
> Hi Lonnie,
>
> Thanks for this information and advise - that sounds like a very reliable
> way to go. I haven't heard about a 14c232 before, is that essentially
> doing the same job as a MAX232?
>
> Tim
>
>
> At 07:18 AM 4/6/2004, you wrote:
> >300 Ft. is doable at 2400 Baud using a 14c232 and twisted pair cable, use
> >one pair for serial signal from one 14c232 to the other,
> >and another for +5 and supply Gnd. and be sure to use a good bypass cap on
> >both ends of the +5 and supply Gnd. a .1uf at each end
> >plus a 100uf to 470uf at the LCD's end.
> >I have made serial comms over 5 times that distance, and the only problem
> >encountered was lightning spikes blowing out the 14c232's.
> >
> >KF4HAZ - Lonnie
> >
> >
From: "Timothy Medema" <timm@c
> >
> > >
> > > Hi Brian,
> > >
> > > This sounds like a good idea too. I hadn't realized short haul modems
were
> > > that inexpensive and I guess that's why I didn't even consider
> > > them. Thanks for pointing that out. If the simple cable run proves to be
> > > unreliable or problematic I'll check into the modems.
> > >
> > > Tim
> > >
> > >
> > > At 11:02 PM 4/5/2004, you wrote:
> > > >You might think about some short haul modems. In a previous life we
> > > >had several Intel minis, and would use Telebyte 92 modems to run from
> > > >the mini to the terminal. If I remember right, with the baud rate
> > > >set down far enough, you could several miles out of them over phone
> > > >wire.
> > > >
> > > >I just looked on Ebay, and there are a pair of Black Box modems with
> > > >a starting bid of 12.99
> > > >
> > > >Good luck,
> > > >Brian
> > > >
> > > >
> > > >--- In basicstamps@yahoogroups.com, "Tim and Jo" <dema@t...> wrote:
> > > > > Hi Jon,
> > > > >
> > > > > I thought about that, and I know that it would be a good solution,
> > > >but I'm
> > > > > trying to keep the cost down as much as possible for this project.
> > > > >
> > > > > Tim
> > > > >
> > > > >
Original Message
> > > > > From: "Jon Williams" <jwilliams@p...>
> > > > > To: <basicstamps@yahoogroups.com>
> > > > > Sent: Monday, April 05, 2004 5:20 PM
> > > > > Subject: RE: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
> > > > >
> > > > >
> > > > > > Thoughts? How about an RF connection?
> > > > > >
> > > > > > -- Jon Williams
> > > > > > -- Applications Engineer, Parallax
> > > > > > -- Dallas Office
> > > > > >
> > > > > >
> > > > > >
Original Message
> > > > > > From: Timothy Medema [noparse][[/noparse]mailto:timm@c...]
> > > > > > Sent: Monday, April 05, 2004 1:43 PM
> > > > > > To: basicstamps@yahoogroups.com
> > > > > > Subject: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
> > > > > >
> > > > > >
> > > > > >
> > > > > > Hi Everyone,
> > > > > >
> > > > > > Can anybody tell me how far a serial LCD can be from the Basic
> > > >Stamp 2
> > > > > > that's driving it, assuming you are using good quality cable?
> > > >I'd like
> > > > > > to
> > > > > > mount a 16x2 serial LCD (yep, it's a Scott Edwards) about 300
> > > >feet from
> > > > > > the
> > > > > > BS2 if possible. Any thoughts?
> > > > > >
> > > > > > Thanks,
> > > > > >
> > > > > > Tim
I wanted to thank you for this explanation too. I have a lot of homework
to do.
Much appreciated,
Tim
At 08:27 AM 4/7/2004, you wrote:
>Actually it is essentially the same chip, cmos version.
>I seem to recall the MAX232 requires larger caps for the charge pump.
>If you used 2 of it's level shifters and inverted one (using the internal
>inverters) you could create differential mode serial TX,
>and use a differential-mode-line-receiver or a simple op-amp you could
>implement an RS-432 system that would carry serial data over
>miles of twisted pair.
>
>KF4HAZ - Lonnie
>
>
From: "Timothy Medema" <timm@c
>
> > Hi Lonnie,
> >
> > Thanks for this information and advise - that sounds like a very reliable
> > way to go. I haven't heard about a 14c232 before, is that essentially
> > doing the same job as a MAX232?
> >
> > Tim
> >
> >
> > At 07:18 AM 4/6/2004, you wrote:
> > >300 Ft. is doable at 2400 Baud using a 14c232 and twisted pair cable, use
> > >one pair for serial signal from one 14c232 to the other,
> > >and another for +5 and supply Gnd. and be sure to use a good bypass cap on
> > >both ends of the +5 and supply Gnd. a .1uf at each end
> > >plus a 100uf to 470uf at the LCD's end.
> > >I have made serial comms over 5 times that distance, and the only problem
> > >encountered was lightning spikes blowing out the 14c232's.
> > >
> > >KF4HAZ - Lonnie
> > >
> > >
From: "Timothy Medema" <timm@c
> > >
> > > >
> > > > Hi Brian,
> > > >
> > > > This sounds like a good idea too. I hadn't realized short haul
> modems were
> > > > that inexpensive and I guess that's why I didn't even consider
> > > > them. Thanks for pointing that out. If the simple cable run
> proves to be
> > > > unreliable or problematic I'll check into the modems.
> > > >
> > > > Tim
> > > >
> > > >
> > > > At 11:02 PM 4/5/2004, you wrote:
> > > > >You might think about some short haul modems. In a previous life we
> > > > >had several Intel minis, and would use Telebyte 92 modems to run from
> > > > >the mini to the terminal. If I remember right, with the baud rate
> > > > >set down far enough, you could several miles out of them over phone
> > > > >wire.
> > > > >
> > > > >I just looked on Ebay, and there are a pair of Black Box modems with
> > > > >a starting bid of 12.99
> > > > >
> > > > >Good luck,
> > > > >Brian
> > > > >
> > > > >
> > > > >--- In basicstamps@yahoogroups.com, "Tim and Jo" <dema@t...> wrote:
> > > > > > Hi Jon,
> > > > > >
> > > > > > I thought about that, and I know that it would be a good solution,
> > > > >but I'm
> > > > > > trying to keep the cost down as much as possible for this project.
> > > > > >
> > > > > > Tim
> > > > > >
> > > > > >
Original Message
> > > > > > From: "Jon Williams" <jwilliams@p...>
> > > > > > To: <basicstamps@yahoogroups.com>
> > > > > > Sent: Monday, April 05, 2004 5:20 PM
> > > > > > Subject: RE: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
> > > > > >
> > > > > >
> > > > > > > Thoughts? How about an RF connection?
> > > > > > >
> > > > > > > -- Jon Williams
> > > > > > > -- Applications Engineer, Parallax
> > > > > > > -- Dallas Office
> > > > > > >
> > > > > > >
> > > > > > >
Original Message
> > > > > > > From: Timothy Medema [noparse][[/noparse]mailto:timm@c...]
> > > > > > > Sent: Monday, April 05, 2004 1:43 PM
> > > > > > > To: basicstamps@yahoogroups.com
> > > > > > > Subject: [noparse][[/noparse]basicstamps] LCD Distance from BS2...
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > Hi Everyone,
> > > > > > >
> > > > > > > Can anybody tell me how far a serial LCD can be from the Basic
> > > > >Stamp 2
> > > > > > > that's driving it, assuming you are using good quality cable?
> > > > >I'd like
> > > > > > > to
> > > > > > > mount a 16x2 serial LCD (yep, it's a Scott Edwards) about 300
> > > > >feet from
> > > > > > > the
> > > > > > > BS2 if possible. Any thoughts?
> > > > > > >
> > > > > > > Thanks,
> > > > > > >
> > > > > > > Tim
>
>
>
>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.
>
>Yahoo! Groups Links
>
>
>
>