Shop OBEX P1 Docs P2 Docs Learn Events
LCD again... — Parallax Forums

LCD again...

ArchiverArchiver Posts: 46,084
edited 2001-09-11 23:26 in General Discussion
Hi all,

One more question about LCDs...
I've got a display module from Trident. It should be a TRIMOD S 1537, 2
lines of 16 characters.
I've played with other modules, with a 14-pin connector. But this one has a
16-pin connector.
I think the 2 additional pins are connected to the optional backlight (they
are connected to 2 other points on the module, marked 'A' and 'K', so I
suppose it's for the LED backlight, when instaled).
If this is right, may I use the 14 first pins like a 14-pin model (1 = Vss,
2 = Vdd, 3 = Vo, 4 = RS, 5 = R/W, 6 = E, and 7 to 14 = D0 to D7) ?

My second (and last...) question is : is there a way to program custom
characters like on the serial display from Parallax (Scott Edwards) ?

If somebody has the datashet (or it's address), I'd like to have it too.

Many thanks,

Phil.

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2001-09-07 23:12
    In a message dated 9/7/01 5:06:46 PM Central Daylight Time,
    derennep@b... writes:


    > If this is right, may I use the 14 first pins like a 14-pin model (1 = Vss,
    > 2 = Vdd, 3 = Vo, 4 = RS, 5 = R/W, 6 = E, and 7 to 14 = D0 to D7) ?

    Yes, that's correct.


    > My second (and last...) question is : is there a way to program custom
    >

    You can generally drop customer characters into any HD4480-compatible LCD.
    To make the process easier, I wrote a program called LCD Character Creator
    (check out the September issue of Nuts & Volts). Anyway, the program let's
    you create custom characters and gives you code samples to make the process
    work.

    That program will be released next week. Check the Parallax web site for
    details.

    -- Jon Williams
    -- Applications Engineer, Parallax


    [noparse][[/noparse]Non-text portions of this message have been removed]
  • ArchiverArchiver Posts: 46,084
    edited 2001-09-07 23:21
    The two other pins are the backlighting. However, you don't just supply
    power to the pins or you will smoke the backlight. Most displays require
    either a dropping resistor *or* a diode in series with the backlight power.

    Generally, the first 14 pins work the same way on all displays, and the last
    two are backlighting. Insult the documentation to be sure.

    As far as the custom characters, if the display has the Hitachi chipset, you
    should have that capability, although the commands are different than with
    Scott's module. There is a good article on this in the Nuts & Volts of Basic
    Stamps volume I.

    Original Message

    > I've played with other modules, with a 14-pin connector. But this one has
    a
    > 16-pin connector.
    > I think the 2 additional pins are connected to the optional backlight
    (they
    > are connected to 2 other points on the module, marked 'A' and 'K', so I
    > suppose it's for the LED backlight, when instaled).
    > If this is right, may I use the 14 first pins like a 14-pin model (1 =
    Vss,
    > 2 = Vdd, 3 = Vo, 4 = RS, 5 = R/W, 6 = E, and 7 to 14 = D0 to D7) ?
  • ArchiverArchiver Posts: 46,084
    edited 2001-09-07 23:23
    Hi Jon,

    Thanks for your ffffast answer !
    Unfortunately, I think I can't read Nuts & Volts, because I'm living in
    Belgium. So I'll wait for your program to be available on Parallax's site.
    Anyway, thnaks again for your informations !

    Best regards,

    Phil.
    Computer Solutions
    Belgium

    Original Message
    >
    > > If this is right, may I use the 14 first pins like a 14-pin model (1 =
    Vss,
    > > 2 = Vdd, 3 = Vo, 4 = RS, 5 = R/W, 6 = E, and 7 to 14 = D0 to D7) ?
    >
    > Yes, that's correct.
    >
    >
    > > My second (and last...) question is : is there a way to program custom
    > >
    >
    > You can generally drop customer characters into any HD4480-compatible LCD.
    > To make the process easier, I wrote a program called LCD Character Creator
    > (check out the September issue of Nuts & Volts). Anyway, the program
    let's
    > you create custom characters and gives you code samples to make the
    process
    > work.
    >
    > That program will be released next week. Check the Parallax web site for
    > details.
    >
    > -- Jon Williams
    > -- Applications Engineer, Parallax
  • ArchiverArchiver Posts: 46,084
    edited 2001-09-07 23:26
    Hi Rodent,

    Thanks for your attention. I'll start playing with this module tomorrow, I
    think it's to hazardous now (00:25 AM in Belgium...)

    Best regards,

    Phil

    Original Message

    > The two other pins are the backlighting. However, you don't just supply
    > power to the pins or you will smoke the backlight. Most displays require
    > either a dropping resistor *or* a diode in series with the backlight
    power.
    >
    > Generally, the first 14 pins work the same way on all displays, and the
    last
    > two are backlighting. Insult the documentation to be sure.
    >
    > As far as the custom characters, if the display has the Hitachi chipset,
    you
    > should have that capability, although the commands are different than with
    > Scott's module. There is a good article on this in the Nuts & Volts of
    Basic
    > Stamps volume I.
    >
    >
    Original Message
    >
    > > I've played with other modules, with a 14-pin connector. But this one
    has
    > a
    > > 16-pin connector.
    > > I think the 2 additional pins are connected to the optional backlight
    > (they
    > > are connected to 2 other points on the module, marked 'A' and 'K', so I
    > > suppose it's for the LED backlight, when instaled).
    > > If this is right, may I use the 14 first pins like a 14-pin model (1 =
    > Vss,
    > > 2 = Vdd, 3 = Vo, 4 = RS, 5 = R/W, 6 = E, and 7 to 14 = D0 to D7) ?
  • ArchiverArchiver Posts: 46,084
    edited 2001-09-07 23:28
    I wonder if Parallax could help distribute Nuts & Volts through their
    European vendors?

    Original Message

    > Thanks for your ffffast answer !
    > Unfortunately, I think I can't read Nuts & Volts, because I'm living in
    > Belgium. So I'll wait for your program to be available on Parallax's site.
    > Anyway, thnaks again for your informations !

    > > To make the process easier, I wrote a program called LCD Character
    Creator
    > > (check out the September issue of Nuts & Volts). Anyway, the program
    > let's
    > > you create custom characters and gives you code samples to make the
    > process
    > > work.
    > >
    > > That program will be released next week. Check the Parallax web site
    for
    > > details.
  • ArchiverArchiver Posts: 46,084
    edited 2001-09-07 23:30
    Heck no. I often work 'till 2-3 in the morning, even with power tools. Of
    course my garage is not air-conditioned, and in Texas its a bit warm during
    the day in the summer. Can't wait for winter!

    Original Message

    > Thanks for your attention. I'll start playing with this module tomorrow, I
    > think it's to hazardous now (00:25 AM in Belgium...)
  • ArchiverArchiver Posts: 46,084
    edited 2001-09-07 23:36
    In a message dated 9/7/01 5:27:44 PM Central Daylight Time, derennep@s...
    writes:


    > Thanks for your ffffast answer !
    > Unfortunately, I think I can't read Nuts & Volts, because I'm living in
    > Belgium. So I'll wait for your program to be available on Parallax's site.
    >

    Philippe:

    I just spent a week in Belgium working with your wonderful technical school
    system to introduce BASIC Stamps in the classroom.

    I had a great time and sampled many wonderful beers.

    You can get "The Nuts & Volts of BASIC Stamps" (2-book set) from Antratek
    Electronics (www.antratek.nl). They are the Parallax distributor for Holland
    and Belgium. And they're really nice people who will happily help you with
    all your Parallax product needs. The books will be a great resouce and there
    are several LCD articles included.

    -- Jon Williams



    [noparse][[/noparse]Non-text portions of this message have been removed]
  • ArchiverArchiver Posts: 46,084
    edited 2001-09-07 23:59
    Hi Jon,

    Did you try beers like 'Chimay', or 'Bush' ? They are very good, but don't
    drink more than two... :-)
    Hopefully, our beers are much better than our weather...
    I'm happy to see that the Stamp begins to be known in Belgium. The first
    time I asked about it to my favorite electronics shop, the girl was looking
    at me as I was speaking chinese ! Did you go to a school in Brussels, or
    elsewhere ? I'm from Charleroi (60 km south from Brussels), and I think I
    must be the only guy playing with the Stamp in this area...
    Thanks for the info about Antratek, I'll have a look on their site.

    Best regards,

    Phil.

    Original Message
    From: <jonwms@a...>
    Subject: Re: [noparse][[/noparse]basicstamps] LCD again...


    > In a message dated 9/7/01 5:27:44 PM Central Daylight Time,
    derennep@s...
    > writes:
    >
    >
    > > Thanks for your ffffast answer !
    > > Unfortunately, I think I can't read Nuts & Volts, because I'm living in
    > > Belgium. So I'll wait for your program to be available on Parallax's
    site.
    > >
    >
    > Philippe:
    >
    > I just spent a week in Belgium working with your wonderful technical
    school
    > system to introduce BASIC Stamps in the classroom.
    >
    > I had a great time and sampled many wonderful beers.
    >
    > You can get "The Nuts & Volts of BASIC Stamps" (2-book set) from Antratek
    > Electronics (www.antratek.nl). They are the Parallax distributor for
    Holland
    > and Belgium. And they're really nice people who will happily help you
    with
    > all your Parallax product needs. The books will be a great resouce and
    there
    > are several LCD articles included.
    >
    > -- Jon Williams
  • ArchiverArchiver Posts: 46,084
    edited 2001-09-08 03:00
    Yes, it is pretty standard to use the additional 2 pins for the backlight while
    1-14 are the same.
    >
    > One more question about LCDs...
    > I've got a display module from Trident. It should be a TRIMOD S 1537, 2
    > lines of 16 characters.
    > I've played with other modules, with a 14-pin connector. But this one has a
    > 16-pin connector. I think the 2 additional pins are connected to the optional
    > backlight (they are connected to 2 other points on the module, marked 'A' and
    > 'K', so I suppose it's for the LED backlight, when instaled). If this is
    right,
    > may I use the 14 first pins like a 14-pin model (1 = Vss, 2 = Vdd, 3 = Vo, 4
    =
    > RS, 5 = R/W, 6 = E, and 7 to 14 = D0 to D7) ?
  • ArchiverArchiver Posts: 46,084
    edited 2001-09-11 23:26
    That would be nice :-)


    Original Message
    From: Rodent [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=SWMlQXTXYeJHzLK-BQNp50IM1Y0Yc2j10uB4bSEUiGEK1_s_-WYhuNmGwcrX17tk2NtXH-yzg2fPeYf-3wU]daweasel@s...[/url
    Sent: 07 September 2001 23:28
    To: basicstamps@yahoogroups.com
    Subject: Re: [noparse][[/noparse]basicstamps] LCD again...


    I wonder if Parallax could help distribute Nuts & Volts through their
    European vendors?
Sign In or Register to comment.