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 Forum index » DIY Hardware and Software
Unkown VCO
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injektilo001



Joined: Aug 21, 2020
Posts: 8
Location: Chile

PostPosted: Mon Sep 21, 2020 5:53 pm    Post subject: Unkown VCO Reply with quote  Mark this post and the followings unread

Hello Everybody

I'm Jean Paul from Chile.
I'm posting for the very first time, just to quit being only a info eater and share something.

It's a VCO project from a guy called Mario. It's pretty simple, but it has 4 wave outputs, and 1v/oct CV. That's it. Maybe somebody with knowledge can add more features to the circuit.

Here's the link to the full project:

https://minartdiysynth.jimdofree.com/minart-analog-synth-2-2019/pcb-s-and-schematics/

You can download the full PDF with some instructions, PCB, schematics, etc...
The only backwards is that is a double sided PCB.

I already build it, just wiring all the top layer, it's looks very ugly, but it works and sounds nice.

Mario answers all the questions that you email to him, he is very kind.

Bye!
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Ayab



Joined: Oct 27, 2015
Posts: 173
Location: London, UK

PostPosted: Wed Sep 23, 2020 2:56 am    Post subject: Unknown VCo Reply with quote  Mark this post and the followings unread

Nice VCO!

I have also had problems with etching double layers. Getting them to match up is not easy and soldering the vias is a pain.

There are some nice MFOS pcb's with only a few connections on the other side that I am thinking of trying with just wiring.
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flagada



Joined: Dec 15, 2016
Posts: 37
Location: Amsterdam

PostPosted: Fri Sep 25, 2020 1:32 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Jean Paul, welcome to the forum!

Is there a tempco somewhere? I can't find it.
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injektilo001



Joined: Aug 21, 2020
Posts: 8
Location: Chile

PostPosted: Fri Sep 25, 2020 6:40 am    Post subject: Reply with quote  Mark this post and the followings unread

Hello Friend

There's no tempco nor thermistor around. I think that's a proper mod to add.
Another mods to add could be PWM modulation, Hard/Soft Sync...
Maybe someone with the knowledge can have some ideas to add those features.

Cheers from Chile.
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