This video from RF IS, one of the best Lunetta pieces that I've ever heard! It's really cool as well to hear things start to happen as he connects more of the modules together.
Joined: Nov 18, 2007 Posts: 301 Location: England
Audio files: 11
G2 patch files: 1
Posted: Tue Mar 31, 2009 3:12 pm Post subject:
That's really cool. Probably shouldn't admit it but I had to have a look at that notated picture you'd posted to try and figure out what was going on, I think that's a sign of severe Lunetta addiction
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
Audio files: 28
Posted: Wed Apr 01, 2009 5:29 am Post subject:
Hi Loss -
Thanks for the 'wow'
This one has many of the same bits - just a couple of notable additions.
The 4051/4017 circuit that Slacker posted is a great circuit I didn't have in the other one. Also, Synthmongers 40106 VCO circuits have a huge range - I didn't have those first time around.
Here's what I used in that patch
3 40106 clocks
2 4094 shift registers
4024 Sub Osc/Freq Divider
1 XOR gate 4030 (just for a bit)
1 4024 Ripple Counter
4017/4051 Pattern & Melody generator
Passive Portamento (Cap and a pot)
R/2R ladder
2 40106 VCO
so i am assuming you are running this off of a dual supply if you have the 40106 vco and the R2r (is it the r2r with the opamp that krunkus posted??) and also..what voltage did you go with? 5, +/-9, 12 or 15?)
i have been studying your tagged photo (just found it...a real inspiration) and have some MORE questions!
which 555 vco did you use?
and i cant seem to find that 4051/4017 circuit you are talking about that slacker posted.
an opamp inverter or a cmos one?
also..what do you think of the 4516? you recommend it?
AND a big one...how did you get all of your outputs wired up to LEDS? did you just hang a led with say a 20k resistor off of each output or is it something more complicated?
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
Audio files: 28
Posted: Wed Apr 01, 2009 6:43 am Post subject:
loss1234 wrote:
so i am assuming you are running this off of a dual supply if you have the 40106 vco and the R2r (is it the r2r with the opamp that krunkus posted??) and also..what voltage did you go with? 5, +/-9, 12 or 15?)
Yes - it has a dual supply for a couple of the circuits.
The logic is all 5 volt, but I used +-12 volt for the opamps.
Yes - The R/2R is close to what Krunkus posted
Quote:
which 555 vco did you use?
and i cant seem to find that 4051/4017 circuit you are talking about that slacker posted.
the 555 vco is one I posted from EDN magazine some time back - check the bottom of the Lunetta thread. one note on that VCO - it expects 0 to -10 volts on the control voltage, so that's why I initially had an inverter (op-amp) ion the panel. I actually removed it from front panel jacks and hard wired it to the VCO, as my concept for having it on the front panel was flawed.
also..what do you think of the 4516? you recommend it?
AND a big one...how did you get all of your outputs wired up to LEDS? did you just hang a led with say a 20k resistor off of each output or is it something more complicated?
The 4516 - meh. I don't want to think that hard in most of my patches.
I had one, had some room and thought I'd use it....
LED's - I just hang them off the outputs with resistors. I think I used 1k - I wanted them bright and I had no battery life or current concerns.
It would be better to have bigger resistors probably. I find the LEDS really useful to know what's going on in a patch, and I wanted to be able to see them. Try some different sizes and see what works for you. _________________ www.sdiy.org/rfeng
"I want to make these sounds that go wooo-wooo-ah-woo-woo.”
(Herb Deutsch to Bob Moog ~1963)
I must say your video has gotten me very inspired to start doing Lunetta work again!
my problem was always getting the stuff BUILT> last year i tried out a ton of cmos experiments on the breadboard and was very exited...but these lunettas take so many jacks and switches, and then the audio ark took so much time that i forgot all about it.
For all of the LEDs in my Deathlehem Machine, I'm using (specifically!) super-bright LEDs and I'm feeding them from 4k7 resistors. A quite decent brightness.
The power for my entire noise machine is +/- 9VDC.
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
Audio files: 28
Posted: Sat Apr 04, 2009 7:11 am Post subject:
The box has been in my garage for a long time. I think it was purchased from Allied Electronics - but that was over 25 years ago. Allied still carries "Bud" items, but on a quick look I could not find anything like this one.
They are a great size - I'd like to find another one or two. _________________ www.sdiy.org/rfeng
"I want to make these sounds that go wooo-wooo-ah-woo-woo.”
(Herb Deutsch to Bob Moog ~1963)
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