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 Forum index » DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta
re-delurking with the Hamlet 2000
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Tomoroh Hidari



Joined: May 04, 2012
Posts: 35
Location: Vienna
Audio files: 2

PostPosted: Sun Mar 30, 2014 8:39 am    Post subject: re-delurking with the Hamlet 2000 Reply with quote  Mark this post and the followings unread

Hi,

it's been a while since I unexplainedly disappeared from the surface of this message board. The reasons being bla bla, I'm happy to say that this doesn't mean I stopped doing DIY electronics. And I still love my 40xx chips (;
And, by the way things look now, I'll have more time (and most of the parts) to finally start a little modular lunetta, but for now:

The Hamlet 2000 Skulldrone-Synthesizer:

Posted Image, might have been reduced in size. Click Image to view fullscreen.

built around a 4093 chip (the "reservoir" capacitor willfully ommited to make it more unstable) running on 9V the Hamlet has two Audio- and two Control-Oscillators (LFOs, if you wish). The control oscillators each drive an LED which is coupled to an LDR to form a simple vactrol. These vactrols, in combination with a 100k Pot, each, set the frequencies of the audio oscillators and, unless the control oscs run at “full speed”, rhythmically switch the audio oscillators on and off.

For some additional visual effects the LEDs are “mirrored” by a pair of additional LEDs placed in the eye sockets of the Skull. The signal is summed via fixed transistors (an “on board” trimmer can be used to set the level).

Here's the schematic:
Posted Image, might have been reduced in size. Click Image to view fullscreen.

I've got a full write-up including some pictures of the insides and videos of both, the breadboard prototype as well as the almost finished thing (-the eye-lenses, battery holder & volume trimmer) on my blog...
http://www.blog.ivorybunker.com/2014/03/1234

so yeah, good to be back in Lunetta land.
And a big thank you to all the people who post here... because, even though not actively taking part here recently, this board is/has been always a great source of help & inspiration...

_________________
~~~
http://blog.ivorybunker.com/
http://tomoroh.ivorybunker.com/
http://tomorohhidari.bandcamp.com
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