Electronics > Repair
HP 34401a DMM with leaking segments
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floobydust:
Are you making a product out of this VFD->OLED conversion, is that your goal?

I have lots of ideas but maybe another thread is a better place to discuss and get the community to collaborate.
But I understand if you want to do this on your own. While open source is a wonderful notion, I don't think it's at all realistic.
qu1ck:
I'm not an EE, i'm just a software engineer tinkering with hardware on his own time. I don't plan to make a commercial product out of it, I don't think it would viable for production anyway because of too limited target audience. And the money I would make off it would be peanuts compared to what I'm paid to write software for the big leagues (wink, wink ;) ).
I will just open source everything when it's ready.

Progress pic of the day, made new display work:


Starting on secret feature now :)
bitseeker:
So cool. I see you've got annunciators (at least one in the pic) and the sampling indicator, too. :clap:

Oh, the suspense...
coromonadalix:
Homer Simpson  drooling  loll :-+
wictor:
Hi, nice to see that someone else has done this with same parts that I planned. I have E3634A with broken VFD. I reversed the protocol with sigrok earlier during the winter and ordered 3,2" OLED and stm32f103. But then I got some other things to do and this project is not proceeding...
If I recall correctly, some settings and dimming some digits is done inside the cpu in front panel and those are not visible in SPI communication. So it seems that I would need to spy signals between front panel cpu and display driver to get full functionality of the original display.
Wictor
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