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sndbyte
Joined: Jun 26, 2009 Posts: 119 Location: sf
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Posted: Fri Oct 08, 2010 5:27 pm Post subject:
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I've started working on my expansion board. I filled in 6 of the 9 spaces on the board. Now I just need to figure out the final 3 and then mount it.
They are:
CD4024: 7 stage divider
CD4060 14 stage divider
CD4017 sequencer (with a fancy bar graph for lights!)
6 patching strips with LED
CD4046 VCO
and finally at the bottom a de-bounced toggle flip flop swtich using a CD4001 and CD4013. The CD4001 is used to debounce the CD4013 flip flop.
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tjookum
Joined: May 25, 2010 Posts: 360 Location: Netherlands
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Posted: Sat Oct 09, 2010 1:07 pm Post subject:
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very nice. Im super impressed with your perfboard skills, I know it is very hard to make sense of all the little jumpers. Well done, now go record something, I want to hear this thing in action! _________________ There he goes. One of God's own prototypes. A high-powered mutant of some kind never even considered for mass production. Too weird to live, and too rare to die.
Hunter S. Thompson
movies
noise |
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sndbyte
Joined: Jun 26, 2009 Posts: 119 Location: sf
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Posted: Sat Oct 09, 2010 5:06 pm Post subject:
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Thanks! I can't wait to get this thing finished up and mounted with my other board. I've just been testing it out with the 3 piezo disks I have. The soft clicking sounds can become pretty hypnotic. |
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sndbyte
Joined: Jun 26, 2009 Posts: 119 Location: sf
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sndbyte
Joined: Jun 26, 2009 Posts: 119 Location: sf
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mosc
Site Admin
Joined: Jan 31, 2003 Posts: 18197 Location: Durham, NC
Audio files: 212
G2 patch files: 60
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Posted: Sat Oct 16, 2010 8:18 am Post subject:
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Very cool looking rig. _________________ --Howard
my music and other stuff |
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textual
Joined: Dec 05, 2009 Posts: 78 Location: New York City
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stolenfat
Joined: Apr 17, 2008 Posts: 476 Location: Sunny Oakland California
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Posted: Mon Oct 18, 2010 12:14 am Post subject:
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wow textual!! whats with those cool circles? How did you drill your holes so straight? _________________ home made noise and electronic ill-logic |
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-minus-
Joined: Oct 26, 2008 Posts: 787
Audio files: 13
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Posted: Mon Oct 18, 2010 12:36 am Post subject:
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Looking really great textual! Nice to see a machine which has been treated with 'modular' respect. Banana jacks have become a rare sight these days. It's what has been holding mine up for some time... among other things!
Thanks for the inspirational image! I shall have to get back to the logic synth stuff as soon as my drone synth is finished!
Nice build!! |
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slacker
Joined: Nov 18, 2007 Posts: 301 Location: England
Audio files: 11
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Posted: Mon Oct 18, 2010 2:14 pm Post subject:
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amazing stuff, looks better than my synth let alone my Lunetta. |
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textual
Joined: Dec 05, 2009 Posts: 78 Location: New York City
Audio files: 1
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Posted: Tue Oct 19, 2010 1:29 pm Post subject:
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Thanks!
Yeah I do like options! The round rows of jacks are 2 straight up 4040 dividers blue jacks are clocks. I just used a compass to draw the circles and figured 12 points around it. If you look really close none of the modules are perfect i cut them all with table saw or jigsaw, sometimes they get wonky, or a hole will be off due to a bad punch, but hey! its DIY man!
I have come into a lot of time lately and am really working to complete it. _________________ Dave
______________________
www.dlbelectronics.com
www.textualmusic.com
www.mercuryprogram.com |
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textual
Joined: Dec 05, 2009 Posts: 78 Location: New York City
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Posted: Tue Oct 19, 2010 4:02 pm Post subject:
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stolenfat wrote: | wow textual!! whats with those cool circles? How did you drill your holes so straight? |
I highly recommend using a punch with a hammer before drilling. Bit will never slip away from its mark whilst sitting in the punch. A drill press is a plus and very handy. You could find one on craigslist for cheap. _________________ Dave
______________________
www.dlbelectronics.com
www.textualmusic.com
www.mercuryprogram.com |
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sndbyte
Joined: Jun 26, 2009 Posts: 119 Location: sf
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Posted: Sun Nov 14, 2010 12:48 pm Post subject:
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I just finished a small portable lunetta. It is 6 chips on a small PC Board in a wooden box I found at a craft store.
Here is a breakdown of what you see on the board (starting from the top left hand corner):
3 patching strips with LEDs
CD40106 with 3 oscillators (1 low, 1 mid, 1 high)
CD4040 divider
CD4051 binary switch
7805 voltage regulator
small piezo buzzer
a on/off switch
CD4011 NAND gate
CD4070 XOR gate
CD4051 shift register
another small peizo buzzer
2 4-hole headers that connect to the 2 piezo buzzers you can see and the 4 piezo discs mounted below the PCB.
The 9 volt battery is below the control panel.
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textual
Joined: Dec 05, 2009 Posts: 78 Location: New York City
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mosc
Site Admin
Joined: Jan 31, 2003 Posts: 18197 Location: Durham, NC
Audio files: 212
G2 patch files: 60
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Posted: Sun Nov 14, 2010 1:09 pm Post subject:
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Text and Snd: great looking and well thought out designs. I'm looking forward to hearing future music. _________________ --Howard
my music and other stuff |
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chutneyfarmer
Joined: Jul 21, 2006 Posts: 16 Location: Ireland
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Posted: Sun Nov 14, 2010 3:04 pm Post subject:
WOW!!! |
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sndbyte wrote: | I just finished a small portable lunetta. It is 6 chips on a small PC Board in a wooden box I found at a craft store.
Here is a breakdown of what you see on the board (starting from the top left hand corner):
3 patching strips with LEDs
CD40106 with 3 oscillators (1 low, 1 mid, 1 high)
CD4040 divider
CD4051 binary switch
7805 voltage regulator
small piezo buzzer
a on/off switch
CD4011 NAND gate
CD4070 XOR gate
CD4051 shift register
another small peizo buzzer
2 4-hole headers that connect to the 2 piezo buzzers you can see and the 4 piezo discs mounted below the PCB.
The 9 volt battery is below the control panel.
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That is beautiful looking! Brilliant work. How do the Piezos work out soundwise? Are they pretty lo-fi or do they do surprisingly well? |
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sndbyte
Joined: Jun 26, 2009 Posts: 119 Location: sf
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Posted: Sun Nov 14, 2010 5:57 pm Post subject:
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Thanks for the kind words.
The piezo buzzers were sort of an experiment for me (the 2 round plastic cased ones you see on the board). One of them is really quiet... you can barely hear it. But that is good in a way, I sit at my desk and use that quiet piezo buzzer but it is not loud enough to drive my wife crazy. The other buzzer is very loud but very lo-fi. It has a sort 'plasticy' sound due to the plastic it is cased in.
The 4 piezo discs are mounted under the board. Each is attached to the wood bottom of the box with double sided tape. They have a nice sound and are great for clicking patterns as they ping the wooden box. Each has a slightly different sound as I used a variety of different discs.
I did not put an output jack on this. |
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rich decibels
Joined: Apr 01, 2010 Posts: 60 Location: Wellington, NZ
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Posted: Tue Nov 16, 2010 9:53 pm Post subject:
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I'm a bit sheepish about posting this after seeing sndbyte's incredible work but here is my first 'finished' lunetta. (Finished as in it's in a box and works every time you switch it on. Not as in complete.) The case is an old PA amp. Top left is a 4093: 4 gates and 4 oscillator outputs. Below that is a 40106 with 4 oscillators with different ranges. Next along is a 4040 with an input and the frist 3 outputs (1/2, 1/4, 1/, then the 8 green knobs are for a 4051-based tone sequencer. Beneath them are 2 XNORs (4077). Then on the right is a 4069 filter with just the LP output and a 4-input mixer.
As you can see it is pretty minimal and I think my next build will go down the perfboard + header pins track with many more chips but I'm pretty happy with what this little guy can do already. I made a little video. FYI the patch is attached below too.
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sndbyte
Joined: Jun 26, 2009 Posts: 119 Location: sf
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Posted: Tue Nov 16, 2010 10:49 pm Post subject:
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That's a pretty nice looking panel (and it looks much more solid and sturdy than a perf board layout). Are you going to build a box around the panel?
One thing to point out about the perf board layout style is that the ICs and header pins ultimately start to get dusty if you don't have a cover for it. That is one reason why I built my second one in a box. Also a few of the metal header pins I've used start to feel a bit loose so I don't always get a good connection. That seems to happen mostly with the pins at the end of a strip.
Keep up the good work! |
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rich decibels
Joined: Apr 01, 2010 Posts: 60 Location: Wellington, NZ
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Posted: Wed Nov 17, 2010 12:10 am Post subject:
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It's actually a box already, it just so happens that you can't see it from the camera angles in the video or the photo. What looks like a panel is actually the top of an old amp enclosure. All the knobs and jacks are mounted to the top of the old amp box, along with a long right-angle bracket that holds all the circuits. It is really sturdy but 80% of the building effort and expense goes to wiring up jacks and pots, which would be so much easier and cheaper with headers and trimmers on perfboard. Also the circuit topologies I have in mind involve about 10x as many inputs and outputs as this so I will need a more compact and cost-effective solution. |
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sndbyte
Joined: Jun 26, 2009 Posts: 119 Location: sf
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tjookum
Joined: May 25, 2010 Posts: 360 Location: Netherlands
Audio files: 26
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Posted: Sun Nov 21, 2010 3:40 am Post subject:
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Great stuff sndbyte!
The shiftregister/divider to multiplexer is one of the most powerfull tools in making lunetta patches, I rarely make a patch without one. One thing you could try is also using a 2x4 bit multiplexer(4052) they work really well with the 4015 and give some really nice variations.
And those piezo's don't sound bad at all, a little more "real" and organic then the usual bleeps and bloops coming from a speaker, well done! _________________ There he goes. One of God's own prototypes. A high-powered mutant of some kind never even considered for mass production. Too weird to live, and too rare to die.
Hunter S. Thompson
movies
noise |
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mosc
Site Admin
Joined: Jan 31, 2003 Posts: 18197 Location: Durham, NC
Audio files: 212
G2 patch files: 60
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Posted: Sun Nov 21, 2010 9:53 am Post subject:
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tjookum wrote: | Great stuff sndbyte!
... well done! |
Yes, I agree. _________________ --Howard
my music and other stuff |
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droffset
Joined: Feb 02, 2009 Posts: 515 Location: London area
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textual
Joined: Dec 05, 2009 Posts: 78 Location: New York City
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