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Sci.Electronics.Basics -> 5 x 7 dot matrix LCD display
There are 7 messages in this thread.
You are currently looking at messages 1 to 7.
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Author: DaveDate: 22:07 01-04-08
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Bought one of these for a couple $ today at my local parts depot. Has 14
pins on each side, and looks like a 3-1/2 or 4 digit display. Trying to
figure out how I can test/make use of such a device. Any ideas are welcome.
Google doesn't help much, at least not with what I have searched on so far.
Also picked up a 3-1/2 or four digit LCD display mounted in an aluminum case
with a 22 pin ribbon cable coming out he back. Says PROTO and some numbers
on the back. Similarly, any ideas on how to test/make use of such a device
are welcome.
Fooling around while I try to finish constructing the circuit to which I
hope to affix such a device.
Thanks,
Dave
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Author: David L. JonesDate: 22:54 01-04-08
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On Apr 2, 1:07 pm, "Dave" <db5...@hotmail.com> wrote:
> Bought one of these for a couple $ today at my local parts depot. Has 14
> pins on each side, and looks like a 3-1/2 or 4 digit display.
Huh?
Dot matrix LCD displays usually come as character based modules like
16x2, 16x1, 8x2, 20x2 etc
Are you saying you have a 4 digit LCD not-matrix character module?
A photo and/or part number would help.
> Trying to
> figure out how I can test/make use of such a device. Any ideas are welcome.
> Google doesn't help much, at least not with what I have searched on so far.
What's the part number you are searching on?
> Also picked up a 3-1/2 or four digit LCD display mounted in an aluminum case
> with a 22 pin ribbon cable coming out he back. Says PROTO and some numbers
> on the back. Similarly, any ideas on how to test/make use of such a device
> are welcome.
Well, if you told us what the "some numbers" are that might help.
Is this like a surplus thing from a disposal store?
> Fooling around while I try to finish constructing the circuit to which I
> hope to affix such a device.
What exactly do you need?
Dave.
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Author: DaveDate: 01:13 02-04-08
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"David L. Jones" <altzone@gmail.com> wrote in message
news:135181ac-61c6-4eec-9298-751daeb9e77c@i36g2000prf.googlegroups.com...
> On Apr 2, 1:07 pm, "Dave" <db5...@hotmail.com> wrote:
>> Bought one of these for a couple $ today at my local parts depot. Has 14
>> pins on each side, and looks like a 3-1/2 or 4 digit display.
>
> Huh?
> Dot matrix LCD displays usually come as character based modules like
> 16x2, 16x1, 8x2, 20x2 etc
> Are you saying you have a 4 digit LCD not-matrix character module?
> A photo and/or part number would help.
>
>> Trying to
>> figure out how I can test/make use of such a device. Any ideas are
>> welcome.
>> Google doesn't help much, at least not with what I have searched on so
>> far.
>
> What's the part number you are searching on?
>
>> Also picked up a 3-1/2 or four digit LCD display mounted in an aluminum
>> case
>> with a 22 pin ribbon cable coming out he back. Says PROTO and some
>> numbers
>> on the back. Similarly, any ideas on how to test/make use of such a
>> device
>> are welcome.
>
> Well, if you told us what the "some numbers" are that might help.
>
> Is this like a surplus thing from a disposal store?
>
>> Fooling around while I try to finish constructing the circuit to which I
>> hope to affix such a device.
>
> What exactly do you need?
>
> Dave.
Hey David,
Thanks for the reply. Sorry I couldnt be more specific. The 5x7 dot-matrix
LCD display doesn't have any numbers on it, and yes, it is surplus from what
amounts to a big junk-box. Will try to see if I can get a decent picture of
it tomorrow. The other one says PROTO 804055. Couldn't find anything via
Google... Both of these look like 3-1/2 digit displays. What I am trying
to do is add a digital display to a transistor tester I am building, for the
purpose of indicating the gain of the device under test. Was planning on
using a 7106 and an LCD display, but am having trouble finding these
locally. Thus my fiddling with junk parts.
Will try to upload photos to abse tomorrow.
Thanks again,
Dave
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Author: David L. JonesDate: 01:21 02-04-08
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On Apr 2, 4:13 pm, "Dave" <db5...@hotmail.com> wrote:
> "David L. Jones" <altz...@gmail.com> wrote in
messagenews:135181ac-61c6-4eec-9298-751daeb9e77c@i36g2000prf.googlegroups.com...
>
>
>
> > On Apr 2, 1:07 pm, "Dave" <db5...@hotmail.com> wrote:
> >> Bought one of these for a couple $ today at my local parts depot. Has 14
> >> pins on each side, and looks like a 3-1/2 or 4 digit display.
>
> > Huh?
> > Dot matrix LCD displays usually come as character based modules like
> > 16x2, 16x1, 8x2, 20x2 etc
> > Are you saying you have a 4 digit LCD not-matrix character module?
> > A photo and/or part number would help.
>
> >> Trying to
> >> figure out how I can test/make use of such a device. Any ideas are
> >> welcome.
> >> Google doesn't help much, at least not with what I have searched on so
> >> far.
>
> > What's the part number you are searching on?
>
> >> Also picked up a 3-1/2 or four digit LCD display mounted in an aluminum
> >> case
> >> with a 22 pin ribbon cable coming out he back. Says PROTO and some
> >> numbers
> >> on the back. Similarly, any ideas on how to test/make use of such a
> >> device
> >> are welcome.
>
> > Well, if you told us what the "some numbers" are that might help.
>
> > Is this like a surplus thing from a disposal store?
>
> >> Fooling around while I try to finish constructing the circuit to which I
> >> hope to affix such a device.
>
> > What exactly do you need?
>
> > Dave.
>
> Hey David,
>
> Thanks for the reply. Sorry I couldnt be more specific. The 5x7 dot-matrix
> LCD display doesn't have any numbers on it, and yes, it is surplus from what
> amounts to a big junk-box. Will try to see if I can get a decent picture of
> it tomorrow. The other one says PROTO 804055. Couldn't find anything via
> Google... Both of these look like 3-1/2 digit displays. What I am trying
> to do is add a digital display to a transistor tester I am building, for the
> purpose of indicating the gain of the device under test. Was planning on
> using a 7106 and an LCD display, but am having trouble finding these
> locally. Thus my fiddling with junk parts.
>
> Will try to upload photos to abse tomorrow.
>
> Thanks again,
>
> Dave
In that case forget the surplus stuff and simply use a standard 200mV
FS panel meter like you mention in your previous thread. Forget
getting the 7106 on its own and rolling your own, everyone carries
standard panel meters.
Simply scale your input voltage to suit the (usually) 200mV full
scale.
Dave.
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Author: DaveDate: 09:22 02-04-08
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"David L. Jones" <altzone@gmail.com> wrote in message
news:690775b2-77dc-4c49-9411-4a8616eaf899@s37g2000prg.googlegroups.com...
> On Apr 2, 4:13 pm, "Dave" <db5...@hotmail.com> wrote:
>> "David L. Jones" <altz...@gmail.com> wrote in
>>
messagenews:135181ac-61c6-4eec-9298-751daeb9e77c@i36g2000prf.googlegroups.com...
>>
>>
>>
>> > On Apr 2, 1:07 pm, "Dave" <db5...@hotmail.com> wrote:
>> >> Bought one of these for a couple $ today at my local parts depot. Has
>> >> 14
>> >> pins on each side, and looks like a 3-1/2 or 4 digit display.
>>
>> > Huh?
>> > Dot matrix LCD displays usually come as character based modules like
>> > 16x2, 16x1, 8x2, 20x2 etc
>> > Are you saying you have a 4 digit LCD not-matrix character module?
>> > A photo and/or part number would help.
>>
>> >> Trying to
>> >> figure out how I can test/make use of such a device. Any ideas are
>> >> welcome.
>> >> Google doesn't help much, at least not with what I have searched on so
>> >> far.
>>
>> > What's the part number you are searching on?
>>
>> >> Also picked up a 3-1/2 or four digit LCD display mounted in an
>> >> aluminum
>> >> case
>> >> with a 22 pin ribbon cable coming out he back. Says PROTO and some
>> >> numbers
>> >> on the back. Similarly, any ideas on how to test/make use of such a
>> >> device
>> >> are welcome.
>>
>> > Well, if you told us what the "some numbers" are that might
help.
>>
>> > Is this like a surplus thing from a disposal store?
>>
>> >> Fooling around while I try to finish constructing the circuit to which
>> >> I
>> >> hope to affix such a device.
>>
>> > What exactly do you need?
>>
>> > Dave.
>>
>> Hey David,
>>
>> Thanks for the reply. Sorry I couldnt be more specific. The 5x7
>> dot-matrix
>> LCD display doesn't have any numbers on it, and yes, it is surplus from
>> what
>> amounts to a big junk-box. Will try to see if I can get a decent picture
>> of
>> it tomorrow. The other one says PROTO 804055. Couldn't find anything
>> via
>> Google... Both of these look like 3-1/2 digit displays. What I am
>> trying
>> to do is add a digital display to a transistor tester I am building, for
>> the
>> purpose of indicating the gain of the device under test. Was planning on
>> using a 7106 and an LCD display, but am having trouble finding these
>> locally. Thus my fiddling with junk parts.
>>
>> Will try to upload photos to abse tomorrow.
>>
>> Thanks again,
>>
>> Dave
>
> In that case forget the surplus stuff and simply use a standard 200mV
> FS panel meter like you mention in your previous thread. Forget
> getting the 7106 on its own and rolling your own, everyone carries
> standard panel meters.
> Simply scale your input voltage to suit the (usually) 200mV full
> scale.
>
> Dave.
Sigh. Yeah, that's probably what I'm going to end up doing, at least for
the meantime. Sorry for the frustrating questions. Guess I was just
thinking I could make do with something simple and cheap. But then, that
sounds like a standard panel meter :)
Thanks,
Dave
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Author: David L. JonesDate: 16:29 02-04-08
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On Apr 3, 12:22 am, "Dave" <db5...@hotmail.com> wrote:
> "David L. Jones" <altz...@gmail.com> wrote in
messagenews:690775b2-77dc-4c49-9411-4a8616eaf899@s37g2000prg.googlegroups.com...
>
>
>
> > On Apr 2, 4:13 pm, "Dave" <db5...@hotmail.com> wrote:
> >> "David L. Jones" <altz...@gmail.com> wrote in
> >>
messagenews:135181ac-61c6-4eec-9298-751daeb9e77c@i36g2000prf.googlegroups.com...
>
> >> > On Apr 2, 1:07 pm, "Dave" <db5...@hotmail.com> wrote:
> >> >> Bought one of these for a couple $ today at my local parts depot.
Has
> >> >> 14
> >> >> pins on each side, and looks like a 3-1/2 or 4 digit display.
>
> >> > Huh?
> >> > Dot matrix LCD displays usually come as character based modules like
> >> > 16x2, 16x1, 8x2, 20x2 etc
> >> > Are you saying you have a 4 digit LCD not-matrix character module?
> >> > A photo and/or part number would help.
>
> >> >> Trying to
> >> >> figure out how I can test/make use of such a device. Any ideas
are
> >> >> welcome.
> >> >> Google doesn't help much, at least not with what I have searched
on so
> >> >> far.
>
> >> > What's the part number you are searching on?
>
> >> >> Also picked up a 3-1/2 or four digit LCD display mounted in an
> >> >> aluminum
> >> >> case
> >> >> with a 22 pin ribbon cable coming out he back. Says PROTO and
some
> >> >> numbers
> >> >> on the back. Similarly, any ideas on how to test/make use of
such a
> >> >> device
> >> >> are welcome.
>
> >> > Well, if you told us what the "some numbers" are that might
help.
>
> >> > Is this like a surplus thing from a disposal store?
>
> >> >> Fooling around while I try to finish constructing the circuit to
which
> >> >> I
> >> >> hope to affix such a device.
>
> >> > What exactly do you need?
>
> >> > Dave.
>
> >> Hey David,
>
> >> Thanks for the reply. Sorry I couldnt be more specific. The 5x7
> >> dot-matrix
> >> LCD display doesn't have any numbers on it, and yes, it is surplus from
> >> what
> >> amounts to a big junk-box. Will try to see if I can get a decent picture
> >> of
> >> it tomorrow. The other one says PROTO 804055. Couldn't find anything
> >> via
> >> Google... Both of these look like 3-1/2 digit displays. What I am
> >> trying
> >> to do is add a digital display to a transistor tester I am building, for
> >> the
> >> purpose of indicating the gain of the device under test. Was planning on
> >> using a 7106 and an LCD display, but am having trouble finding these
> >> locally. Thus my fiddling with junk parts.
>
> >> Will try to upload photos to abse tomorrow.
>
> >> Thanks again,
>
> >> Dave
>
> > In that case forget the surplus stuff and simply use a standard 200mV
> > FS panel meter like you mention in your previous thread. Forget
> > getting the 7106 on its own and rolling your own, everyone carries
> > standard panel meters.
> > Simply scale your input voltage to suit the (usually) 200mV full
> > scale.
>
> > Dave.
>
> Sigh. Yeah, that's probably what I'm going to end up doing, at least for
> the meantime. Sorry for the frustrating questions. Guess I was just
> thinking I could make do with something simple and cheap. But then, that
> sounds like a standard panel meter :)
Yup. Just make sure the panel meter you get has a "common ground" so
it can use the same supply as your project. Others need their own
isolated supply.
Dave.
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Author: DaveDate: 20:44 02-04-08
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"David L. Jones" <altzone@gmail.com> wrote in message
news:515d5d1f-0c44-4fdd-8f8a-a6385a6da88b@e6g2000prf.googlegroups.com...
> On Apr 3, 12:22 am, "Dave" <db5...@hotmail.com> wrote:
>> "David L. Jones" <altz...@gmail.com> wrote in
>>
messagenews:690775b2-77dc-4c49-9411-4a8616eaf899@s37g2000prg.googlegroups.com...
>>
>>
>>
>> > On Apr 2, 4:13 pm, "Dave" <db5...@hotmail.com> wrote:
>> >> "David L. Jones" <altz...@gmail.com> wrote in
>> >>
messagenews:135181ac-61c6-4eec-9298-751daeb9e77c@i36g2000prf.googlegroups.com...
>>
>> >> > On Apr 2, 1:07 pm, "Dave" <db5...@hotmail.com>
wrote:
>> >> >> Bought one of these for a couple $ today at my local parts
depot.
>> >> >> Has
>> >> >> 14
>> >> >> pins on each side, and looks like a 3-1/2 or 4 digit display.
>>
>> >> > Huh?
>> >> > Dot matrix LCD displays usually come as character based modules
like
>> >> > 16x2, 16x1, 8x2, 20x2 etc
>> >> > Are you saying you have a 4 digit LCD not-matrix character
module?
>> >> > A photo and/or part number would help.
>>
>> >> >> Trying to
>> >> >> figure out how I can test/make use of such a device. Any
ideas are
>> >> >> welcome.
>> >> >> Google doesn't help much, at least not with what I have
searched on
>> >> >> so
>> >> >> far.
>>
>> >> > What's the part number you are searching on?
>>
>> >> >> Also picked up a 3-1/2 or four digit LCD display mounted in
an
>> >> >> aluminum
>> >> >> case
>> >> >> with a 22 pin ribbon cable coming out he back. Says PROTO
and some
>> >> >> numbers
>> >> >> on the back. Similarly, any ideas on how to test/make use of
such
>> >> >> a
>> >> >> device
>> >> >> are welcome.
>>
>> >> > Well, if you told us what the "some numbers" are that
might help.
>>
>> >> > Is this like a surplus thing from a disposal store?
>>
>> >> >> Fooling around while I try to finish constructing the circuit
to
>> >> >> which
>> >> >> I
>> >> >> hope to affix such a device.
>>
>> >> > What exactly do you need?
>>
>> >> > Dave.
>>
>> >> Hey David,
>>
>> >> Thanks for the reply. Sorry I couldnt be more specific. The 5x7
>> >> dot-matrix
>> >> LCD display doesn't have any numbers on it, and yes, it is surplus
>> >> from
>> >> what
>> >> amounts to a big junk-box. Will try to see if I can get a decent
>> >> picture
>> >> of
>> >> it tomorrow. The other one says PROTO 804055. Couldn't find anything
>> >> via
>> >> Google... Both of these look like 3-1/2 digit displays. What I am
>> >> trying
>> >> to do is add a digital display to a transistor tester I am building,
>> >> for
>> >> the
>> >> purpose of indicating the gain of the device under test. Was planning
>> >> on
>> >> using a 7106 and an LCD display, but am having trouble finding these
>> >> locally. Thus my fiddling with junk parts.
>>
>> >> Will try to upload photos to abse tomorrow.
>>
>> >> Thanks again,
>>
>> >> Dave
>>
>> > In that case forget the surplus stuff and simply use a standard 200mV
>> > FS panel meter like you mention in your previous thread. Forget
>> > getting the 7106 on its own and rolling your own, everyone carries
>> > standard panel meters.
>> > Simply scale your input voltage to suit the (usually) 200mV full
>> > scale.
>>
>> > Dave.
>>
>> Sigh. Yeah, that's probably what I'm going to end up doing, at least for
>> the meantime. Sorry for the frustrating questions. Guess I was just
>> thinking I could make do with something simple and cheap. But then, that
>> sounds like a standard panel meter :)
>
> Yup. Just make sure the panel meter you get has a "common ground" so
> it can use the same supply as your project. Others need their own
> isolated supply.
>
> Dave.
Aah. Thank you. Something to watch for.
'preciate it.
Dave
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