ETI/Powertran/Elrad vocoder

[Hallvard Tangeraas]

At 04:21 +0200  19-06-2000, Magnus Danielson wrote:

>> The input amp that you had working -is it a completely remade PCB?
>
>Nope, just did some rewiring.

Good, then there's still some hope for me ;-)


>> Yup, a lot of patience is also needed ;-)
>
>Yeah, don't forget to buy a big bag of patience at your next round at
>the supermarket. Have another lollipop while you are at it.

I don't think my supermarkewt sells patience-bags that big, but then
again I might have another go at that lollipop ;-)
To tell you the truth, I'll be glad when I can finally connect all the
modules of the vocoder together, apply power, wait for a few seconds
and see no smoke, try it out and have it work!!!


>> But first I just want to make it work "out of the box" before I ruin it
>> with modifications ;-)
>
>Love to hear more about those.

We'll get to it ;-)


>> For the PCB I've colour coded some of the connection points
  [....]
>> Then you could mail me the edited image. I don't think the list will be
>> too happy to receive attachements.
>
>No, they usually are not happy, but passing URLs is another game ;)

Yup. I also run a mailing list myself (see my signature), and I've
actually made it impossible to add attachements (i.e. very large
messages).


>> Perhaps we should even take this discussion off the list

>Well, unless someone screems I think we can keep it up. I for one find
>it interesting to read about other peoples debug sessions, there are
>things to pick up. We don't contribute to many emails anyway.

Sometimes though, there are quite a lot of messages here. I wish there
was a digest so I could receive one collective message each day instead
of many small ones. Do you know of any such thing?


>Please check the updated version at:
>
>http://home.swipnet.se/cfmd/synths/schematics/eti_amp.html
>
>I hope that the added picture helps to remove some questions.

Thanks! I've taken a look at it briefly, and I can certainly see why I
have had problems. I never understood that the RV1 potmeter should have
one of the side-pins connected to where there wasn't even a hole on the
PCB!
No wonder it never worked.

I'm currently looking into the jack connectors, to make sure I figure
that out correctly and am drawing an illustration for that, so when I'm
done I can upload some more pictures which you can "approve" compared
to your circuit.


>I also learned the hard way that I need to spend some more time with
>GIMP.

Ah, a Linux user?
That's pretty cool, to see someone not worship bill gate$ ;-)
I'm an Atari ST and Apple Mac user myself, so no windoze
in sight here ;-))

I'll get back to the circuit in a little while, and after that we can
try to cooperate until we both complete our vocoder -do you have a lot
of work left? What's not done at your end?


Hallvard
--
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