[sdiy] Substitute for pin matrixes? Lab plate, the winner?

[karl dalen]

I have made dedicated patch panel with the spare lab plate i was talking
about earlier. I interfaced the plate with some modules and it works
surprisingly well even when one knocks on it, to hard and it can crackle
slightly yes but normals use nemas problemas!

I made patch cables by using different colored conductor wires of the same
area 0.5mm, thick enoug to be seated well but not so thick it would bend
the connector toungs out to make it sit loose. I then soldered a resistor
of chosen value, the neat thing with this kind of matrix panel are that
one can use any resistor value (just as you do when using it as veroboard)
plate to scale signals from transmitter to receiver.I cut the resistor leg
so long it exactly fitted the hole then strangled the resistor and wire
with a colorful crimp tube. The color can represent a signal kind, i.e
CV, AC, DC, Modulator, whatever.

It kinda looks neat and its well beyond dead cheap! A complete matrix
panel with 840 patch points including a bucket of resistors, crimp
tubes and associated patch wire are less then 10 euro NEW!!

Of course it's ultra tiny but thats kind of neat i think and it causes
a ultra tiny mess over a ultra tiny area on a dedicated spot and not as
a modular with Bananas or 6.35mm jacks that create a spaggetti hell
beyond belief.

Compared to other patch systems:

Probably Pros:
1:It has close to same amount of patch points as a a Gillemeti matrix.
2:Kind of same stackable as a banana system, 5 in 5 out.
3:Smallest of them all still quite easy to deal with.
4:Cheapest among them all, a similar 3,50mm system but with only
112 patch points would still be 30euro (connectors only) expensiver
even if i buy 3.50mm in lots of 500 units.
5:Life time quite long, if handled gently i assume longer than many
3,5mm systems.perhaps not a system based on cliff jacks.
6:System assembly friendly no worser then anything else regarding
   soldering , screw, drill etc.

Probably Cons:
1:Crosstalk could be an issue, not as bad as Gillemeti matrix, i
figure if signals kept to +/-5V and perhaps use second 5 hole row
as AG on can partly screen next row.
2:Tiny, for those who suffers Parkinson or have snowman hands
  this are an issue.
3:Unconventional perhaps?
4:Every row needs an summing OP amp if rows used as virtual summing
  nodes but that apply to a Gillemetti matix as well.

So i hereby declare a new patch system invented and in god and
the holy pope, dub this system to Sub Miniature Resistor Matrix!

To the tonal SuMiReMa!..................!.....................!

Thanks, and have a god day.

KD


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