Seq-y pattern generator project

andrewF · Posted: Wed Sep 12, 2007 1:57 am Post subject:

made this one today - original bugbrand version! Thanks for sharing!
it is a lovely( Wink

) design = a lot of fun for little effort or expense.
i will be making a few more of these.

i can see the advantages of comparators on the inputs and perhaps glide on the output, but i've already got plenty of logic modules, CV processors and whatall, so no need for me.

bugbrand · Posted: Thu Sep 13, 2007 2:15 am Post subject:

Andrew --- freaking ace! Show us a pic! And mp3s?!

andrewF · Posted: Fri Sep 14, 2007 12:26 am Post subject:

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

I was finally after working on it all week, hoping to have my 1st of 2 Pattern Generators up and running for testing today. (With the Ken Stone / vtl comparator addition and my NAND Gates input addition / replacement).

This time - I thought "Let's shoot on video, the 1st power on - just in case it blows up!"

Sure enough - the 22R protection resistor on my +V power input, let out the Magic Smoke. Uh oh. Shocked

Even though I had tested for power supply shorts first, something's wrong. Time to go and bug solve. Smile

I'll be posting the nararrated video at my website, tomorrow morning - for anyone interested. Smile

Minor update: 30 min. later: Ground to the CD4052 was not soldered; center connection to 2nd Comparator's Voltage amount pot, not soldered.

Powered up - Comparator #1 / NAND Gate # 1 - working beautifully.
Hooked up first cable to Comp. #2 and Magic Smoke came out of the new +V input resistor. Bug solving tomorrow. Off to work.

Impressed SO far with #1 working though! Very Happy

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

Ok! I THINK I have found the solution as to WHY my 1st of 2 Pattern Generators has released Magic Smoke, twice! Very Happy

Now - I am still lacking on theory a fair bit. My biggest trouble is not having yet found, an explanation to the Kirschoff Law (of resistance?) that I can wrap around my head. I understand most other theory BASICs though, in my self-taught electronics knowledge.

I've posted my analysis of the problem in the Design section of my modular synth's webpage. http://deathlehem.com/wsb4569662402/design.html
Could those of you, with far more knowledge than I - tell me whether my realization / find that I typed about, is correct? I'm just about to do the (hopeful) fix now and see whether the Pattern Generator works, as it should. Smile

The video that I shot yesterday of the first Magic Smoke release, is also up there for any that would like to watch it. Not that exciting, but I'll be videoing every first power up for a new module, from now on, for my own history purposes. Smile

Thank you greatly for any help!! I'm still learning. Embarassed

(edit) 1:42pm - Oooooo. Sorry about that! I had NOT posted my webpage edit, WITH my analysis until NOW - with my Magic Smoke #3 addition to it. Duh on my part.
(edit) 6:50pm Sunday. 98% of Pattern Generator #1 (with Ken Scott Comparator) is working. Odd trouble that I may find out tomorrow, but it IS working. I'll have video up on my site and/or here, once I get at least the 2nd one up and running. Smile

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

Wednesday - Ooops. Sorry for posting the request below this, yesterday. I've found my PCB error, causing the 350+ milliamp current draw into my board with the 2 Pattern Generators. That problem, after 6 days is finally solved. Smile

-----
Tuesday -
I've just started testing my 2nd one - Magic Smoke again - and measuring the current draw, I'm looking at (get this) 375 milliamps of current draw on my meter! (Over 5 watts of power, through a 1/4 watt resistor. No wonder it cooks. Shocked

)

Thanks for any help. Smile

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

I've just posted a short 1 minute video in the Design section at my website showing the 1st of 2 x Divide By 7 Counters (with an LED and Output for each of it's 7 bits), driving both the comparators of each of my 2 x BugBrand Pattern Generators.

15 LEDs happily blinking away! Very Happy

It's a simple test of all 3 modules with simple audio as well.

To finish this panel, I have yet to attach everything for:

- the 2nd Divide By 7 Counter with Outputs and LEDs
- 3 Clocks (each driving 1 colour of a tri-colour LED)
- 1 x 3 input non-inverting Summer with built in Slew, for softening the edges of anything input into it.

Once the next 5 modules are completed, I'll then take the panel apart, stain and polyurethane it and it'll be completed. Smile

Many MANY thanks to Tom Bugs for his Pattern Generator and vtl3 for his Comparator addition to it! Tons of wonderful audio hell and audio beauty shall in part be created with these 2 little buggers. Very Happy

drapdap · Posted: Sat Sep 22, 2007 6:13 am Post subject: very Bead

hello

excuse both my english and my ignorance!
theres something called "Bead" on vtl5c3's layout. its just a piece of wire, connecting the to holes, right?

robert

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

The bead on vtl's layout is either a Ferrite bead; 10 to 22 ohm resistor or a piece of wire.
I myself have been using a 22 ohm resistor for +V and -V power supply inputs for about 18 months now. They have saved me from blowing MANY fuses, in that time. Smile

drapdap · Posted: Sat Sep 22, 2007 7:07 am Post subject:

ah, ok, thanks a lot!

i just did not know the term "bead" - my bad.
just etched a pcb (i still work in acid), soldiering the resistors now.
somehow this smells like a classic. Smile

robert

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

Heh. MY bad, was not having thought of it before and all of the fuses that I'd blown before I'd added them to every single module. Wink

I was so impressed by the video from Tom Bugs' 1st one, I had to build 2. Smile

Very very glad that I did!!

Now I'm pondering doing a 1V/octave modification to one of them. lol Very Happy

drapdap · Posted: Sat Sep 22, 2007 7:36 am Post subject:

yes, i saw that too, it bit me, and it was something i really needed anyways,
thanks for all of you guys here, it's wonderful stuff!
also put a twins down into the acid, luckily my modular is way out of the standard
european size (doepfer that is, is eurorack the name?) i hope everything will fit somehow.

took a peak of Damian, so terrific, congrats! Twisted Evil

robert

Scott Stites · Posted: Sat Sep 22, 2007 8:55 am Post subject:

Being on dial-up, I haven't had a chance to listen to the Seq-y samples yet on YouTube. Where I'm not on dial-up, YouTube is blocked by a certain firewall.

However, the firewall doesn't mind WMA's Twisted Evil

So I was able to check out this flick of DAMIAN in action:

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

I shot a new video on Tuesday after finishing the hookup of my 3 x Clocks and Slewing Summer in my current panel. It's about 6 1/2 minutes long and nararrated throughout - hopefully coming across with a decent idea as to what I'm doing with the modules in the panel. Smile

The modules are only controlling an unneffected single VCO, to get the idea across. The power potential from Tom Bugs' Pattern Generator combined with the power of Ken Stone's Master Divider and other modules - is almost overwhelming. Shocked

Here's a pic from the beginning of the video, as well as a direct link to it.

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

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

The modules used in the video include:

- 2 x Pattern Generators
- 1 x Divide By 7 Divider
- 2 x Clocks

I HIGHLY recommend building Ken Stone's Master Divider. With the original one I'd built in 2006, I hooked 3 of it's bits up to drum sounds, to use it as a simple drum machine. Smile

The http://deathlehem.com/wsb4569662402/design.html - 6 1/2 minute video. Enjoy. Smile

bugbrand · Posted: Thu Sep 27, 2007 9:52 am Post subject:

Hey Ryk nice work and your video made me smile - and laugh a few times:: 'hope you don't mind me smoking' 'come on change' 'oops hooked up the wrong output' hehe! Yeah rocking approach.

I'm thinking that your divider is more like a 2/4/8/16/32/64/128 than divide by 7, right? Certainly looks like that anyways & i could see why you'd maybe call this a divide by 7. Yeah, its def. a good module to have but I reckon you'll get even more excited by Ken's Pulse Divider which does do the 2/3/4/5/6/7/8 divisions -- I freaking love this because it gets you out of the straight'n'standard 16 length rhythms and gets all sorts of seemingly ever-evolving patterns generated when you make use of the 3/5/7s - mmm polyrhythms!

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

RF · Posted: Wed Oct 10, 2007 8:16 pm Post subject:

Just finished building this dual pattern generator.

Tom's circuit twice with a dual Ken Stone design LM358 'front end' from his Pulse Generator so I can clock it with anything that moves Twisted Evil

I didn't have room on the panel for each side to have dual OR gates, so I OR'd the first input on each side, and used just a single input for the second bit.

Thanks for the circuit Bugs! Cool stuff.

bruce

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janvanvolt · Joined: Nov 24, 2005 Posts: 285 Location: Mainz, Germany

So here i am, also finished my (preliminary) bug pattern generator. After exchanging the CD4052 (which was D.O.A) the unit works as expected.
Some photos for your enjoyment ... off now to design the frontpanel for this thingie.

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julianw · Joined: Jul 30, 2007 Posts: 78 Location: UK

I just populated a dual version of the PCB posted here by vtl, slightly modded pcb below, its just two pcbs stuck together with common power for both.

How would I change the design for NAND and NOR functionality?

vtl5c3 · Posted: Mon Oct 29, 2007 9:13 am Post subject:

I think for NOR functionality, you'd simply need to add an inverter to one of the clock inputs, since they're already doing the OR thing. Not sure about the AND thing. I'm guessing there's a few different ways to do it.

RF · Posted: Mon Oct 29, 2007 9:31 am Post subject:

Man - That pcb looks clean compared to my perfboard version - nice job.

A quick update on mine - after playing with it a bit, I pulled the "OR" input and added Ken Stone's Gate to Trigger converter to each side of the module. I think it's a nice addition and I already have a module elsewhere in my system to do OR's, NOR's and AND's and NAND's.

Bruce