Thank you - Simple VCO success

Hi all,

After building a four super simple oscillator drone box and a handful of guitar pedals, I decided to move onto LMNC’s stripboard modules and my own case.

As is often the case, I built everything up, oiled the wood, sprayed the panel, soldered the circuit, put it all together and… it didn’t work. I was annoyed, start fiddling with stuff a little frustrated and turned the op amp IC around thinking I’d misplaced it, and blew the fuse in my power supply.

After taking a break and coming onto this forum however, I found that someone had made the exact same fuse-blowing, IC turning mistake I had made, and that further, I’d have to ground the last leg of the pot - and it all worked!

I just wanted to say thanks to LMNC, Dud, aaron2, and the many others on the forum who made this a success story; it’s great to know there are likeminded (and more informed) people around.

Hopefully a pic is attached to show the project so far. Roll on the next module!

All the best,

Jack

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Just realised you can tag people - thanks again @Dud @aaron2 and the many more people that contributed to the threads!

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Awesome!! I like the stark black panel too. I’ve got an extra 3340, maybe I’ll make one too…

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Love it! Much nearer than my first attempts at a case and power supply. Is that a circuit bent Henry Hoover I see?

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Thanks Blackdeath! I’d definitely recommend it, it was a ton of fun to build and it has a fairly low parts count. Post pics if you do!

Appreciate it Sonosus!

Not quite circuit bent - it’s a gutted mini Henry hoover that I built a bass fuss circuit into. Sounds surprisingly great though!

I have bent an old Casio keyboard with a couple of switches. It ended up sounding like two flavours of lofi overdrive, or a whole lot of noise with both switches on!

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Nice! I’m pretty amateur at circuit bending myself(damn Furbies love emitting brain smoke), but be sure to check out @Dud 's blog
soundbender36.wordpress.com - an absolute treasure trove of bent toys/instruments.

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I’ve been reading through it all morning! Endless great projects on there - I’ll be sure to try out a few

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If you need some help don’t hesitate :slight_smile:

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Really appreciate it @Dud - I’ll be sure to do so!

I think I’m going to go for something nice and simple for the next module. A clock-divider style sub-oscillator with a 4013. Should be able to get a nice fuller sound before I move onto the more challenging looking ms-20 filter on the LMNC site.

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@Dud - this is offtopic, but what does your ‘Mega’ module do? The one in your fourth box.

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It’s a hack from a megaphone toy voice changing (lofi pitch up /down/robotic voice …) and @analogoutput have made a module of it

a thread with vid here

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Ha, I missed this one! Cool, loads of unique sounds from a hacked toy! Neat, I like whatever phaser is going on there, and the bit crushing sound on your drums.

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