The HV5122 is a completely different animal than the 74141/K155; it has a
built-in shift register which seems to be a common, and very useful feature
of the HV55xx device family.
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He says in the video that the HV5122 is compatible with the SN74141/K155ID?
I feel the same way about the pins, having already killed an IN-18 this way
:-(.
Unfortunately Kosbo only sells his IN-18 clock fully assembled without the
tubes afaik.
I'm also partial to heatsinks to prolong the life
Nicely built, but the wrong schematic was shown because the upper PCB uses
HV5122 parts, and the schematic showed K155D.
My only concern about using socket pins in this case is that they were
already soldered to the board, so plugging-in the expensive IN-18's may
subject them to stress. I
