Electronics > Repair
Advantest R6581 VFD replacement
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IanJ:

--- Quote from: branadic on December 17, 2024, 05:33:23 pm ---Thanks, a VFD like look instead of the Rigol color scheme would have been nice, but I also like the look of the Valhalla 2720 display.

-branadic-

--- End quote ---

I used the built in font on the LT7680A-R so very much restricted to that. However, unless I am wrong I think there is an option to load complete fonts to the flash IC on the pcb but I never looked at doing that at all.

Ian
chekhov:
I thought that you did created a new font for this IC.
However if I remember correctly (because I was looking at this board when ordered this display) the biggest limitation is the font size that it can hold, so you won't be able to draw big digits.
branadic:
When I wrote "VFD like look" I meant color-wise, so more green/blue'ish instead of the Rigol color scheme with yellow, cyan and green.

-branadic-
IanJ:

--- Quote from: chekhov on December 18, 2024, 04:36:49 pm ---I thought that you did created a new font for this IC.
However if I remember correctly (because I was looking at this board when ordered this display) the biggest limitation is the font size that it can hold, so you won't be able to draw big digits.

--- End quote ---

The biggest font is 32x32 pixels, but it supports multipliers on top of that to scale it up. I am using a 16x32 font and scaling that up which works out just right for the MAIN display

I only created a new character for the OHM symbol.

Ian
IanJ:

--- Quote from: branadic on December 18, 2024, 06:21:30 pm ---When I wrote "VFD like look" I meant color-wise, so more green/blue'ish instead of the Rigol color scheme with yellow, cyan and green.

-branadic-

--- End quote ---

Ahh, ok.
Due to the smoked window some colours don’t project enough even with the backlighting at full brightness, hence yellow/white seem best at least for the main row……in my eyes anyway.
I’ll try and come up with a way to select further colours…….i guess ultimately the user could pick their own and save.

Ian.
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