Re: Question: XY (XYZ or Vector) instrument CRT, replacement with an LCD ?
|
Thanks Harvey; I am not ruling anything out. I would like the skills that NewScopes has. I will take a look at those displays you mentioned. I can do graphics on a 128x64 LCD using a Digole adapter driven?by a PIC. That is easy.
I would like a "C" compiler for my PC. with a useful Graphics library. I just?installed one and wrote a program. Next I will try drawing a box. I would like to learn graphics on the RaspberryPi but?I cannot find the right area. It seems to be all games written in Python. It has always seemed?Mickey Mouse to me. I also need to learn to use the VESA library and find out what software can use it. Is it free? I'm using Prologix and EZGPIB now. It works.
Everyone has free software but the free MS Visual C++ turned out to be $50/month. I wasted 2 weeks on?that when I got?a?message saying my trial period was over.? I don't remember anything that?said?trial when I downloaded?it. I thought it?was a stripped?down version. I don't mind a few hundred $ like CCS C that?I use often for programming PICs. I am reluctant to learn Python (or Pascal for EZGPIB, or R to?plot, or all the other suggestions that I am told are so easy).
Peter
On Sat, Nov 6, 2021 at 9:04 PM Harvey White < madyn@...> wrote:
You don't need to read the entire 1700 page book.? It's useful
for finding out exactly what a section does, or if you wish to
program in assembly (depending on which 1700 pages).? More
important would be the board manual.
Once you start messing with graphics, things can be complicated,
but that very much depends on how you do it.? There are drivers
available that work on the board, though.?
The one F469I-disco board needs only scaled inputs.? An arduino
style breadboard plugged in can likely give you that and you can
access the 4 ADC converter inputs and protect the chip with op amp
buffers.? The display is 800 x 480 with a 4 inch screen, similar
to a cell phone.
There are ways to configure the chip fairly easily.? All you need
to do is write C code.?
If you can design and make PC boards, then a Nucleo-144 board
with a homemade board can drive an LCD display.? You'll have to
roll your own software for that, though, since most of the display
hardware would not be supported.?
For smaller projects, there's a Nucleo-32 board which has the
same form factor as an arduino Nano.? The Nucleo 64 boards (more
powerful processor) have an arduino plugin capability.
Harvey
On 11/6/2021 4:33 PM, peter bunge wrote:
I looked at the 1700 page data sheet for the Arm
Cortex 32 bit CPU and the much smaller development board data
sheet (30 pages?).
It looks complicated!
I have a RaspberryPi 3 inserted in a SmartiPi Touch Case
with wireless ISB keyboard. I think it would be easier to use
and it has a higher resolution screen. $350 Cdn if I remember
correctly.
It may be easier to replace in 5 years time when the ST
becomes obsolete.
I am impressed with the video and would love to
add an LCD to my HP4192A Impedance Analyzer that has no CRT
and expects an XYY analog pen plotter.
Anyone interested please contact me privately and maybe
we can do something.
I also have a Tek 576 Curve Tracer but the CRT is good
and I have a spare. I can see the advantages of updating
it. Keep me in the loop,?I may be able?to contribute.
I updated my HP8753B with the Newscope LCD and am
delighted with it. My HP8757C has a colour LCD and is
excellent but a bit dim in bright lighting, as is my
HP54542C DSO.
Getting a digital screen capture would be great as
well. My 3 HP mentioned have ways to get a screen capture
(John Miles 7470A emulator, Prologix USB/GPIB, and a USB
floppy reader).
What language is the software written in? I am
struggling with a decision to learn Python but have pretty
well decided to stick to C which I use for programming
PICs. Python would be a huge distraction and time burner
for me.
Peter
hi,
In the event of instrument CRT death, one might want to do
a replacement having an LCD display:
The question is:
-- are there any existing modules ( or schematics, or
projects )? that might be used for an HP older instrument
having an XY (XYZ or Vector) type CRT that would allow
replacement of the CTR with an LCD ( & also provide a
laptop connection for data manipulation & saving ) ?
This question is for a Vector type XY or XYZ CRT?? found
in some older scopes, ... & ? for example the Tek 576
Curve Tracer ( CT ) :
??? {??? Raster type CRT to VGA type modules can be had
inexpensively on eBay for ~ $29,etc.? .... and is not the
topic in this thread }
There has been some recent discussion about this for the
Tek 576 CT on that Groups .io .... without a resolution as
of yet,
but the same solution *might* be of use to older HP
instruments as well ?
/g/TekScopes/topic/86718765
and
/g/TekScopes/topic/69490299#164207
Anyway, looking for a solution to this XY ( XYZ, Vector )?
type CRT to LCD problem.
{ Not wanting to replace the CRT with another CRT ! }
There is an example of someone doing a retrofit add-on LCD
module for an HP 141T 18GHz SA:
The individual did not make any further YouTube video
upgrades to that project; but it is a start !
The discussed ST LCD module is not too expensive ( $55 to
$130 ).
The video Arcade Game folks do have an expensive module
that can do this for their Vector type CRT's,
... discussed in the Tek Curve Tracer CRT discussion : /g/TekScopes/topic/86718765
However, this Tempest module ( ~$525 !! ) & the
NewScope modules are way too expensive !
-- So, would not be buying those at all !
So, looking for a less expensive module or schematics of
such to attempt a DIY for the XY (XYZ or Vector) CRT to
LCD replacement.
>> Anyone having specific detailed technical
knowledge for an XY (XYZ, Vector) to LCD module, or
schematics? to the above issue ?
? would be appreciated.
thank you,
rick
|
