Interfacing VFD display pn:40855001

Other Hardware Displays
1

I've recived a box full of VFD used on Rowe-Ami's rockolas. PN: 40855001
They use the MICREL's MIC10937 as display controller.

I've read that @hydrolisk1792 tried to use them with vaf1613 library without success some years ago.

Well, the library works very well and can be used with this display board but the data and clock must be inverted before the display's PCB.
That's all!

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After some reverse engineering of the board I've notice that. Now, you just must add 2 inverters (7404 ie) before data and clock and will work fine.
Also, I supply 12V to the display board instead of 8V that @hydrolisk1792 used.

If more info is required from me please ask.
Thanks for reading.
#EFHC

2

I guess you are referring to this thread: How do I use this library?

The display looks quite interesting. VFD displays appear on Ebay and Aliexpress from time to time. I occasionally purchase some, most recently a set of six IV-4 tubes.