4060 "Suboscilator" Stripboard & Olegtron

csj2k · Joined: Mar 10, 2019 Posts: 14 Location: UK

This is the first stripboard I've published. I've made it from this layout and it works but there's a chance the layout could be improved and I would welcome feedback. If I were to make this for regular use I would replace the DIP switches with toggle switches. I only made this circuit to better understand the Olegtron.

I printed the original diagram but can't find the file to publish and can't find it on the site which was referenced on the schematic. There was a simple error in that pin 12 was left floating instead of being connected to ground.

The DIP switches allow you to turn any of the 10 dividers on or off to make some very interesting sounds from punchy percussion to all out musical madness! I actually found the schematic after seeing the "Olegtron" which also uses the CD4060. "Baron von Pooppenstein" was kind enough to share his schematic for the Olegtron in the product's own forum (with Olli Suorlahti's permission) and I have permission from the Baron and Olli to share it here. While they were happy to share for us DIY'ers, it is only fair that I should provide a link to the product which I can whole-heartedly recommend - this thing is so simple but has huge potential and the thing I like most about it is that it's insane! They have also released a Eurorack version. https://www.olegtron.com/olegtron-4060

4060_Olegtron.png

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4060_Suboscilator.png

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PHOBoS · Posted: Tue Jul 30, 2019 12:08 pm Post subject:

Just a word of caution, you shouldn't connect outputs directly together which is what you are doing now if
you turn more than one switch on. The correct way to do it would be to add diodes in series with the outputs.
Also I don't see a current limiting resistor for the LED, but you might be using one with it build in.

And then there is the diode + 1K resistor in parallel connected in series with pin 16 of the chip.
The 1K could be used for starving but is bypassed by the diode. Or was that 1K meant for the LED ?

The rest looks ok.

csj2k · Joined: Mar 10, 2019 Posts: 14 Location: UK

Thank you for looking it over PHOBoS. You're absolutely right about the 1K resistor - it was for the LED. I checked it over several times and was happy with it. When I came to make it from the layout, I made a last minute change to the position of the LED but after updating the DIYLC file I clearly didn't spend enough time checking the change. I'll fix it and post an amended one shortly.

The design (without the diodes) is how I found it. The Olegtron also allows you to use multiple dividers and there are no diodes involved there either. Is it potentially damaging without the diodes or is it just against accepted convention?

csj2k · Joined: Mar 10, 2019 Posts: 14 Location: UK

As per the error PHOBoS identified, see below for the fixed layout. I removed the LED and 1K resistor as it isn't an essential part of the circuit and I'd imagine if you're reading this there's a good chance you know how to add an LED if you so wish.

4060_Suboscilator_01.png

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PHOBoS · Posted: Tue Jul 30, 2019 4:16 pm Post subject:

csj2k · Joined: Mar 10, 2019 Posts: 14 Location: UK

Thank you for the explanation, that makes sense.