[sdiy] Substitute for pin matrixes?

[karl dalen]

>I think for typical synth signals, that is V rather than mV regime it 
>would actually be pretty good.  Other than the odd looks I don't see 
>much of a problem.

The patch point are a virtual node so i have only a small current.

>I don't think they would fail hard just after 100 cycles, but that's 
>something you can even try out.  Do you really care in this 
>application if the contact resistance is 300mOhm vs. 25mOhm when new?

The point is mechanical life, even a loss of several ohms dont do much.
if it fails after 200 or 300 times, still a very low figure compared to
the most crappy Chinese 3.5mm teles that will do 5000 times.  
 
>Is it much of a problem that you occasionally may have to pull a pin 
>and re-seat it?  Yes, I think I'd get several years of lifetime out of 
>it, YMMV.

Now i tested on a turned socket, about 70 inouts it had wear'ed off the
resistor legs plating  this clogged up the spring, it still worked but
its very stiff to insert and unplug, after 120 it was even worser still
working after 150 leg got stuck, probably the spring that gave in.

Tested on 3 holes on same socket, all gave similar results.

>You could stack two sockets if you think this is going to 
>be a big problem, that way the top socket can be exchanged when it 
>wears out. 

Could be a neat solution.

KD


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