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 Forum index » DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta
Pelican Case Lunetta
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stubbyfex



Joined: Sep 08, 2009
Posts: 8
Location: Denver, Colorado
PostPosted: Mon Mar 24, 2014 4:14 pm    Post subject: Pelican Case Lunetta Reply with quote  Mark this post and the followings unread
Just finished my first Lunetta. It uses three chips: a 40106, a 4093 and a 4051.
I used a Pelican 1200 box. The faceplate is 1/8" aluminum with a clear label that I printed on an ink-jet printer. I then sprayed the label with clear to keep the printing from washing off. Great sounds! The diode on the power socket is a P6KE15A that clamps the input voltage at 15v. I usually power it from my home-built modular synth's Power One switching supply. It also works great with a 9V Voodoo Lab Pedal Power Iso 5 too. All inputs and outputs of the chips have 560 ohm resistors on them. The inputs all have pull-down resistors, and the outputs have super bright red LED's. [/img]

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analog_backlash



Joined: Sep 04, 2012
Posts: 393
Location: Aldershot, UK
Audio files: 21
PostPosted: Mon Mar 24, 2014 4:42 pm    Post subject: Reply with quote  Mark this post and the followings unread
Hi stubbyfex.

Looks really good to me Very Happy . I was looking at the schematics and I was a bit surprised by the 9K53 resistors in it. Did you have a good reason to use these or did you just have a plentiful supply of them?

Gary
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trav



Joined: Sep 11, 2012
Posts: 108
Location: Auckland
Audio files: 16
PostPosted: Tue Mar 25, 2014 2:26 am    Post subject: Reply with quote  Mark this post and the followings unread
Looks great. Sounds, please!
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RingMad



Joined: Jan 15, 2011
Posts: 428
Location: Montreal, Canada
Audio files: 4
PostPosted: Tue Mar 25, 2014 10:23 am    Post subject: Reply with quote  Mark this post and the followings unread
Good work. Nice & neat wiring job inside!

James.
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roglok



Joined: Aug 28, 2010
Posts: 202
Location: uptown
PostPosted: Tue Mar 25, 2014 4:28 pm    Post subject: Reply with quote  Mark this post and the followings unread
sounds, or it didn't happen!
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stubbyfex



Joined: Sep 08, 2009
Posts: 8
Location: Denver, Colorado
PostPosted: Tue Mar 25, 2014 10:47 pm    Post subject: Re: resistor values Reply with quote  Mark this post and the followings unread
Yes, I had a box of them and thought they were close enough to 10k. Same with the 560 ohm. I'll get some sounds up soon too.
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stubbyfex



Joined: Sep 08, 2009
Posts: 8
Location: Denver, Colorado
PostPosted: Wed Mar 26, 2014 3:30 pm    Post subject: demo video Reply with quote  Mark this post and the followings unread
Here is a demo showing the oscillators, then the Nand gates and finally the one of 8 data selector.

Lunetta1.m4v
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roglok



Joined: Aug 28, 2010
Posts: 202
Location: uptown
PostPosted: Fri Mar 28, 2014 4:45 am    Post subject: Reply with quote  Mark this post and the followings unread
nice!
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DUBmatze



Joined: Feb 18, 2013
Posts: 150
Location: south Germaica (schwabilon)
PostPosted: Sat Mar 29, 2014 1:53 am    Post subject: Reply with quote  Mark this post and the followings unread
verry nice build!
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Tycho Brahe



Joined: Apr 24, 2014
Posts: 6
Location: Cologne Germany
PostPosted: Tue Apr 29, 2014 2:06 pm    Post subject: Re: Pelican Case Lunetta Reply with quote  Mark this post and the followings unread
Nice build! Can you close the case with the patched cables in it?

stubbyfex wrote:
All inputs and outputs of the chips have 560 ohm resistors on them. [/img]

I understand the need of pulldown/-up resistors, but why a serial resistor?
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