7i73 LCD shows rubisch

Here a copy

It is able to run but until now only on my test bench.
And not yet proper documented, but the lcd stuff is in the display.hal


Sorry, I don't know if I can come back to you tonight, we have guests and I'm already twice asked to come toe eat.

but TX again
Mike

@pcw
Do you need some explaining for the project dir i did send you?
Thx Mike

One other variable.
Exactly which LCD display are you using? Perhaps I should try to get the identical one?

Actually this is quite an old one, important is only the controller chips.
I read BT 42008 LED V1
www.datasheetlib.com/datasheet/1135432/bt42008_data-modul.html

They are from production spares i got some years ago. Nice big ones.
But when i tested 7i73 first time i also used some different tinier ones, laying around and they also worked flawless. (Was in my deciding phase of designing my tableau)

Only thing to know. These kind of lcd tend to need slightly negative voltage for the brightness.
That's why i have a small icl7660 and poti for the brightness pin witch is disconnected from the 7i73.

Hallo Andy,
hallo mike,

i followed this thread, but did not test the so called fixes.
I mentioned in an ealier post, the push that destroid the display communication.
Can you please explain, why you do change lcd.comp? It might not be clean coded, but the communication problem must be related to something else.

I have just reseted the computer from my machine to the working branch and since that step, my displayworks fine!

Same as Mike, i am using a 7i76e with the 7i73 connected directly to that one.
As mentioned earlier, i can borrow you such a config, i just do not have a second display, may be Mike can borrow you one.

Please do not considder this post as unpolite critism, i just want to guide your attention to the fakt that a known push destroid the communication.

Norbert

Mike_Eitel wrote: Actually this is quite an old one, important is only the controller chips.
I read BT 42008 LED V1
www.datasheetlib.com/datasheet/1135432/bt42008_data-modul.html .

OK, I found one on eBay, should be here by Friday.