Searching a simple VCA DIY project

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adam
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Re: Searching a simple VCA DIY project

Post by adam » Tue Dec 31, 2019 7:50 am

the normal one, round shaft, no detent, dual gang is two pots

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Re: Searching a simple VCA DIY project

Post by Hales » Tue Dec 31, 2019 9:05 am

Thanks Adam!

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Re: Searching a simple VCA DIY project

Post by Hales » Sat Jan 04, 2020 9:17 am

Ripples trimmer orientation… Should I solder the trimmer on the back? Is the orientation correct?
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khakifridge
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Re: Searching a simple VCA DIY project

Post by khakifridge » Sat Jan 04, 2020 12:15 pm

Electrically, the orientation isn't at all important. However, you need to consider things from a mechanical point of view. If you put the trimmer on the "front" of the board, does it snag any other components on that side, and (perhaps more importantly) does it fit beneath the panel when the pots and jacks are installed? This is easy enough to check out with a dry fit.

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Re: Searching a simple VCA DIY project

Post by Hales » Mon Jan 06, 2020 11:44 am

[Veils assembly question]

I'm building Veils and I have a question about R62, R67, R68 and IC6 with C31, R52 and R55. R62+R67+R68 are very closed… is there supposed to be a bridge between these 3? Same question with C31, R52, R55 with the proximity with IC6 pads. I'm at 75% to finish the assembly with no much trouble but these components are very close and i'm not sure i can remove the bridge…
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adam
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Re: Searching a simple VCA DIY project

Post by adam » Tue Jan 07, 2020 6:33 am

if you check the schematic you will see if they're connected or not

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Re: Searching a simple VCA DIY project

Post by Hales » Tue Jan 07, 2020 7:58 am

Currently I don't have enough knowledge in electronics to deduce this from the schematic but I would be happy to learn it.
I would tend to believe they are separated but I need to be sure.

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Re: Searching a simple VCA DIY project

Post by adam » Tue Jan 07, 2020 8:21 am

if the parts are connected with a line on the schematic they are connected - sometimes labels are used, gnd or vcc etc, in that case the parts are connected to other things with that label

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Re: Searching a simple VCA DIY project

Post by Hales » Wed Jan 08, 2020 11:16 am

If I see the schematic, R62, R67 and R68 are connected with a line effectively.
However, this information doesn't allow me to conclude if I should avoid having solder bridges between these components.
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adam
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Re: Searching a simple VCA DIY project

Post by adam » Wed Jan 08, 2020 2:24 pm

if you switch to the pcb view you can see what the traces are doing

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Re: Searching a simple VCA DIY project

Post by Hales » Wed Jan 08, 2020 2:29 pm

what traces?

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Re: Searching a simple VCA DIY project

Post by Hales » Wed Jan 08, 2020 3:05 pm

I read this post (viewtopic.php?f=17&t=213681) which leads me to think that it doesn't matter to have a bridge since there is this green point between the components. However, if possible I would like to have a clear answer and also understand if it's supposed to have bridges between left pads of IC6 and R55, R52 and C31. On schematic I see this green point between IC6 and R52 and R55 (don't know what to think about C31…) which makes me assume that there is therefore a connection between "2" (I don't understand if this "2" is the pad Number) of IC6 and R45 and "3" of IC6 and R55+R52. I would also like to know if in general for these cases there is a NEED for a bridge or if it is just the same whether there is a solder bridge or not… Thank you for your patience! :help:

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Re: Searching a simple VCA DIY project

Post by adam » Wed Jan 08, 2020 4:17 pm

Hales wrote:
Wed Jan 08, 2020 2:29 pm
what traces?
the pcb traces, switching between pcb and schematic view is really useful for working out if bridges are ok or if they need to be removed...

2 is the pin number of the IC, generally you don't need solder bridges, the traces of the pcb should make all necessary connections

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Re: Searching a simple VCA DIY project

Post by Hales » Wed Jan 08, 2020 5:13 pm

Ok I'm starting to be able to read and understand the schematic better in relation to the PCB, so I would say that it doesn't matter if there is a bridge between the components as soon as they are connected with the green point. Is that correct?

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Re: Searching a simple VCA DIY project

Post by adam » Wed Jan 08, 2020 5:16 pm

yes that sounds fair :)

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Re: Searching a simple VCA DIY project

Post by Hales » Thu Jan 09, 2020 6:41 am

:party:

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Re: Searching a simple VCA DIY project

Post by Hales » Sun Jan 12, 2020 3:11 pm

I've finished soldering electronic parts for Ripples and Veils and made some multimeter tests.
Power seems ok, for both/ no shorts.
I've also controlled the ICs, all seems ok for Ripples. On the other hand for Veils ICs, I don't find connectivity on positive side. For example, for IC3, if I test pad 16 "VCC", my multimeter doesn't "beep" on contact with positive power pins. Same test with VEE and negative power pins give the "beep". It does the same for every ICs on Veils.
Is that a problem? why it doesn't work the same way as Ripples? Thanks…

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Re: Searching a simple VCA DIY project

Post by adam » Sun Jan 12, 2020 3:38 pm

so how did you build veils? did you solder the power section first then test the ic pads or everything at once?

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Re: Searching a simple VCA DIY project

Post by Hales » Sun Jan 12, 2020 3:52 pm

I still have the mechanical components to solder for both Ripples and Veils.
it may be a mistake but I first solder the ICs, then components around these IC to cover an entire area at once. Last, I soldered the power section.

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cackland
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Re: Searching a simple VCA DIY project

Post by cackland » Sun Jan 12, 2020 3:53 pm

Having solders bridges anywhere is not really best practice. The traces should only be the link between each component.

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Re: Searching a simple VCA DIY project

Post by Hales » Sun Jan 12, 2020 3:58 pm

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Re: Searching a simple VCA DIY project

Post by Hales » Sun Jan 12, 2020 4:17 pm

Should I try to remove the bridges? I tought it's not so important to have bridges as long as components are connected with trace.

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Re: Searching a simple VCA DIY project

Post by adam » Sun Jan 12, 2020 4:27 pm

it sounds like you've got 12v on the power connector but not further downstream

if you've inspected the bridges under 10x magnification and they aren't connecting anything wrong i'm inclined to say leave them, otherwise they would need to be removed

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Re: Searching a simple VCA DIY project

Post by Hales » Sun Jan 12, 2020 4:34 pm

Is there a way to check this with the multimeter?

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Re: Searching a simple VCA DIY project

Post by adam » Sun Jan 12, 2020 4:45 pm

d2 needs to be correctly oriented or it'll block vcc, have you got 12v on the output of d2?

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