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 Forum index » DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta
simple 8 step sequecer for SL
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alangave



Joined: Jan 06, 2008
Posts: 4
Location: France

PostPosted: Sun Jan 06, 2008 9:49 am    Post subject: Reply with quote  Mark this post and the followings unread

Hello,

On topic "cascading more than one 4017", I found this from an Old Motorla Cmos Data Book.

Haven't tried it yet but look interesting

Regards,


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Franky



Joined: Dec 09, 2007
Posts: 57
Location: Grenoble - France

PostPosted: Tue Feb 19, 2008 5:35 am    Post subject: Reply with quote  Mark this post and the followings unread

Something cool that can be done is to use 2 4017: one wired forward and one wired reversed to play the sequence backwards, and allow 3 modes: forward, reverse, and a K2000 effect (pendullum)..

If you plan to make a really simple sequencer, you can use a CD4022 wich has only 8 decoded outputs, ready to use Cool

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scriptstyle



Joined: Jan 22, 2008
Posts: 250
Location: nj

PostPosted: Sun Mar 09, 2008 11:23 pm    Post subject: Reply with quote  Mark this post and the followings unread

so did anyone ever make a pcb layout or stripboard for the 4017 8 step sequencer? also is there a way to run this or somthing similaR off 9v?
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Franky



Joined: Dec 09, 2007
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Location: Grenoble - France

PostPosted: Mon Mar 10, 2008 12:03 am    Post subject: Reply with quote  Mark this post and the followings unread

I actually did a PCB (still working on it) but it's for the CD4022-powered 8 step Sequencer (the Vanishing Point).

I've tested this circuit on a breadboard, it works...

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scriptstyle



Joined: Jan 22, 2008
Posts: 250
Location: nj

PostPosted: Mon Mar 10, 2008 1:22 am    Post subject: Reply with quote  Mark this post and the followings unread

correct me i'm wrong but the 4017 and the 4022 are the same chips pin for pin? if so i could use your layout. Very Happy

i already have some 4017s, i just want to do acouple small sequencer projects with them(add a wsg and toy keyboard, and maybe another standalone possibly 16 steps for other small circuits).

i am really just trying to brush up on sequencer knowledge cause i just ordered klee pcbs!!!!!
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Franky



Joined: Dec 09, 2007
Posts: 57
Location: Grenoble - France

PostPosted: Mon Mar 10, 2008 2:08 am    Post subject: Reply with quote  Mark this post and the followings unread

Actually the 4017 is a 10 output decoder and the 4022 a 8 output decoder..

So if you want to make a really simple 8 step sequencer, but therefore not being able to extend it to more than 8 steps, you should use a 4022. Reset is made automatically after reaching the last step..


About the pin configuration, the datasheet is the same and I know that the 4022 has some NC pins..


My layout is made for a Zvex Seek pedal, so the circuit is very tiny, and it is double-sided..

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v-un-v
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PostPosted: Mon Mar 10, 2008 2:01 pm    Post subject: Reply with quote  Mark this post and the followings unread

Daniel who started this thread, and is a moderator here, well I haven't seen him around since June last year. I hope he is okay? Confused

dnny?? Shocked

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scriptstyle



Joined: Jan 22, 2008
Posts: 250
Location: nj

PostPosted: Mon Mar 10, 2008 4:41 pm    Post subject: Reply with quote  Mark this post and the followings unread

i also noticed that dnny disapeared half way through the pages of this thread?

hope all is well, i will check back in a week or so when im done experimenting with what im workin on.
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Pascal



Joined: Feb 25, 2007
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PostPosted: Sun Mar 30, 2008 12:51 am    Post subject: Reply with quote  Mark this post and the followings unread

Hello,

I tought there was a topic about a sequenser for the wsg.
I can't find it anymore.

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scriptstyle



Joined: Jan 22, 2008
Posts: 250
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PostPosted: Sun Mar 30, 2008 7:48 pm    Post subject: Reply with quote  Mark this post and the followings unread

well if you find one post the link cause i am interested!!!
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scriptstyle



Joined: Jan 22, 2008
Posts: 250
Location: nj

PostPosted: Sun Mar 30, 2008 8:48 pm    Post subject: Reply with quote  Mark this post and the followings unread

i did find this just now is this what you are talking about?
http://www.robthefiddler.com/electronics-audio-diy/circuit-experiments/wsg-mods-for-a-sequencer-thingy/
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Pascal



Joined: Feb 25, 2007
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PostPosted: Sun Mar 30, 2008 11:55 pm    Post subject: Reply with quote  Mark this post and the followings unread

scriptstyle wrote:
i did find this just now is this what you are talking about?
http://www.robthefiddler.com/electronics-audio-diy/circuit-experiments/wsg-mods-for-a-sequencer-thingy/


No. But that's also interesting.

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Pascal



Joined: Feb 25, 2007
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PostPosted: Mon Mar 31, 2008 12:04 am    Post subject: Reply with quote  Mark this post and the followings unread

I remember again.
It was this topic (page 6)

Forum-member lalito asked about it.

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dnny



Joined: Mar 12, 2005
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PostPosted: Sat Apr 05, 2008 8:11 am    Post subject: Reply with quote  Mark this post and the followings unread

v-un-v wrote:
Daniel who started this thread, and is a moderator here, well I haven't seen him around since June last year. I hope he is okay? Confused

dnny?? Shocked


Hi there, I'm fine. I'm Great. I had few troubles whit time... you know how work and GF´s can be Smile that was the main reason I dropped out. This week a friend told that there is a great Lunetta forum here, and i must say that looks really nice.

well i know i should test and draw the schems for the sequencer again...

maybe soon Smile

good to see that everyting else is just like it was when I left.

Tom how is your SL doing? mine is still on the table waiting to be finnished Shocked

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mosc
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PostPosted: Sun Apr 06, 2008 8:07 am    Post subject: Reply with quote  Mark this post and the followings unread

Welcome back!
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scriptstyle



Joined: Jan 22, 2008
Posts: 250
Location: nj

PostPosted: Sun Apr 06, 2008 5:59 pm    Post subject: Reply with quote  Mark this post and the followings unread

so dnny glad to see you back here!!!

i have actually read this complete thread atleast 3 times!!!
and i have breadboarded the baby 10 and yours and tried so many dif variations, but i still only get either all the leds to light up or just the first one? i did have it so that when i put a clock in from an astable 555 to have the leds dimm and then bright. is there a way to breadboard this without pots and just have resistors? im just getting fustrated and i want to get it working so i canintergrate it with my wsg... any help appreciated?
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scriptstyle



Joined: Jan 22, 2008
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PostPosted: Wed Apr 09, 2008 3:19 am    Post subject: Reply with quote  Mark this post and the followings unread

I got it the baby 10 rev 2.0 helped
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widdly



Joined: Jun 25, 2007
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PostPosted: Mon Apr 14, 2008 11:59 pm    Post subject: Reply with quote  Mark this post and the followings unread

I put a comparator on the clock input and used a potentiometer voltage divider for the reference voltage. Now I can clock my Baby10 from all the VCO's and LFO's in my synth. I used an LM358 for the comparator so I could use only gnd and +ve. It's probably easier than using the gate to trigger circuit.
Last edited by widdly on Thu Aug 05, 2010 10:14 pm; edited 1 time in total
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Danno Gee Ray



Joined: Sep 25, 2005
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PostPosted: Tue Apr 15, 2008 2:43 pm    Post subject: Reply with quote  Mark this post and the followings unread

would you by chance have a schematic of that circuit?
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widdly



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PostPosted: Wed Apr 16, 2008 1:29 am    Post subject: Reply with quote  Mark this post and the followings unread

Something like this... I used a 100k trimmer for the resistor. I put a 100k resistor on the input. I used an LM358 but if you want to use a TL072 then I think you should change the Vdd to go to -15v and add a diode on the output.

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

Since the LM358 is a dual device, you could duplicate the circuit and connect it to the output from the sequencer pots. If you put the 100k potentiometer on the front panel you could get an extra gate output that is on when the sequence is above a certain value.

Last edited by widdly on Thu Aug 05, 2010 10:14 pm; edited 1 time in total
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Danno Gee Ray



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PostPosted: Wed Apr 16, 2008 3:11 pm    Post subject: Reply with quote  Mark this post and the followings unread

thanks.
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CommonCollector



Joined: May 24, 2008
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Location: Vancouver, BC

PostPosted: Sat May 24, 2008 1:16 pm    Post subject: Power Supply Reply with quote  Mark this post and the followings unread

Hi,
Im an electronic semi-newby. I have successfully put together a few projects, including the SL, from MFOS.

I put this sequencer together and things seem to be wired correctly but the power supply seems to be buggy. For instance when i turn the adjustment pots to their extreme the rest of the circuit looses power.

Right now I am running it off of two 9 volts wired for +/- operation and a set of electrolytic .22uf bypass caps (from ground to + and ground to -)

Any suggestions are appreciated.
Thanks.
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LektroiD



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PostPosted: Fri Oct 31, 2008 8:39 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi guys, is there likely to be a stripboard layout of this, with perhaps a current component list? I would like to have a go at this myself, but can't find any mac software to convert the schematic to stripboard. If anyone knows a Mac version of lochmaster, I'd love to know about it. Otherwise, if someone could run this through on their PC version for us stripboard freaks, it would be appreciated by many, I'm sure!

Also, I'm presuming this design works with the 1V/oct version of Soundlab?
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kxspxr



Joined: Nov 20, 2008
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PostPosted: Fri Nov 21, 2008 9:38 am    Post subject: Reply with quote  Mark this post and the followings unread

Brainstormer wrote:
If anyone knows a Mac version of lochmaster, I'd love to know about it. Otherwise, if someone could run this through on their PC version for us stripboard freaks, it would be appreciated by many, I'm sure!

I use the java version of DIY layout creator from Storm Software. It's freeware and works like a charm on my mac.

http://www.storm-software.co.yu/diy/forums.html?project=software

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LektroiD



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PostPosted: Thu Jan 08, 2009 8:56 pm    Post subject: Reply with quote  Mark this post and the followings unread

two questions:

1. Is this sequencer for the 1V/Oct version of Soundlab? (I'm building stripboard V2.0)
2. What is the NPN transistor?

kxspxr wrote:
Brainstormer wrote:
If anyone knows a Mac version of lochmaster, I'd love to know about it. Otherwise, if someone could run this through on their PC version for us stripboard freaks, it would be appreciated by many, I'm sure!

I use the java version of DIY layout creator from Storm Software. It's freeware and works like a charm on my mac.

http://www.storm-software.co.yu/diy/forums.html?project=software


I downloaded that, looks great, Is there a function where you can automatically lay out a stripboard design from the schematic? I can't find a way.
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