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[Lcdproc] Please advise: an LCD and interface that works

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  • From: richie.thornton AT (Richard Thornton)
  • Subject: [Lcdproc] Please advise: an LCD and interface that works
  • Date: Mon Jun 23 12:14:02 2008

Hi All,

I am based in Australia and am looking for an easy to install LCD with
interface, it can be USB, parallel or serial, but it must have an
internal case connector, I have cut a hole 32x95mm (for the 20x4 LCD I
can't get to work) so the active screen should be close to this.

Basically, it has to be tried and tested with LCDproc and a bonus if
it is available locally, it is going to be embedded so no external
connectors are to be visible.

I would rather not do any soldering, something funky like PLED a
bonus, low power is good, the system is an always on firewall.

Thanks for your time.

Kind Regards

On 6/23/08, Thomas Jarosch
<thomas.jarosch AT>
> ---------- Forwarded Message ----------
> Subject: Re: [Lcdproc] Noritake Itron VFD display on FT245R (ftdi)
> Date: Sunday, 22. June 2008
> From: "Han Hartgers"
> <han.hartgers AT>
> To: "Thomas Jarosch"
> <thomas.jarosch AT>
> On Fri, Jun 20, 2008 at 11:49 PM, Thomas Jarosch
> <thomas.jarosch AT>
> wrote:
>> Hello Hans,
>> On Friday, 20. June 2008 16:01:58 Han Hartgers wrote:
>>> 3. The first bytes send by the ftdi driver are getting lost during the
>>> configuration of the ft245R chip.
>>> The coming days I will dive a bit more in the software to find a nice
>>> solution, not that I am that of a programmer..... But I was wondering
>>> if someone has some similar experience with the ftdi chip driver. (It
>>> is only part of the LCDd for a couple of weeks so it would surprise me
>>> if there are many people using this chip yet.
>> I've seen problems in the past on some boxes that the first byte written
>> by
>> libftdi get's lost somewhere between libusb <-> kernel <-> FTDI chip.
>> I was not able to find the source of this, yet. Luckily there is already
>> a workaround for this in the driver, see hd44780-ftdi.c.
>> Have a nice weekend,
>> Thomas
> Hi Thomas,
> Thanks for the tip. I saw the comment about the lost byte in the source
> code.
> For the 4 bit interface is the 4 bit mode command send 3 times. Is
> that the work around?
> The strange thing is that my LCD modules are working fine, no problem
> with the initialisation after computer start-up or disconnecting from
> the USB bus.
> I assume that is something more timing depended for my Noritake VFD.
> Greetings,
> Han
> -------------------------------------------------------
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