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 Forum index » DIY Hardware and Software » fonik's place
8-Step Sequencer with voltage controllable pattern (VCPS)
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fonik



Joined: Jun 07, 2006
Posts: 3950
Location: Germany
Audio files: 23

PostPosted: Sat Apr 17, 2010 3:36 am    Post subject: Reply with quote  Mark this post and the followings unread

soon. i will have to write up the docs, and i will have to triple check my latest change on the circuit:
i changed the reset circuit a little bit. it now resets on upgoing pulse/gate, thus the external reset input is no longer inhibiting the sequencer. this is very handy if you wanted to reset you sequencer using an divider.
a common divider gives you long gates. as long as the reset in on the 4017 is high it is stopped. it is an stop-reset actually. so i altered the reset input of the sequencer to a gate2trig. any gate will result in a short reset pulse.

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cheers,
matthias
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philpeery



Joined: Nov 08, 2006
Posts: 137
Location: new jersey, usa

PostPosted: Sat Apr 17, 2010 6:46 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Fonik! Put me in for 2, this looks like a great project! your case looks great!

-Phil
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oldmanfury



Joined: Oct 20, 2006
Posts: 57
Location: CA

PostPosted: Sat Apr 17, 2010 9:06 am    Post subject: Reply with quote  Mark this post and the followings unread

Looking like it's getting close! Put me down for one.

-gerald
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CJ Miller



Joined: Jan 07, 2007
Posts: 368
Location: 127.0.0.1

PostPosted: Sat May 01, 2010 2:10 am    Post subject: Reply with quote  Mark this post and the followings unread

I am happy that my EFM archives have been an inspiration! There is even a third folder of schematics and such which I was going to upload, but my old mac is broken now so it will need to wait until I fix it. It's going to be liquid cooled, next time around.

Meanwhile, please do put me down for two PCBs if you plan on offering them.
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adambee7



Joined: Apr 04, 2009
Posts: 420
Location: united kingdom

PostPosted: Sat May 01, 2010 3:19 am    Post subject: Reply with quote  Mark this post and the followings unread

I'll have two for sure mat. cheers. Very Happy Very Happy
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a100user



Joined: Oct 28, 2003
Posts: 158
Location: UK

PostPosted: Mon May 03, 2010 12:03 am    Post subject: Reply with quote  Mark this post and the followings unread

I'd like one please
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fonik



Joined: Jun 07, 2006
Posts: 3950
Location: Germany
Audio files: 23

PostPosted: Mon May 03, 2010 6:23 am    Post subject: Reply with quote  Mark this post and the followings unread

hi all,

i am now taking orders for this project until monday, the 17th of may.
BTW i think i registered all placed orders by today, the 4th of may. i am still writing up the building docs, so stay tuned. however, the current schematic can be found in the 1st post of this thread.

the pricing:
1 PCB 12.-EUR/16.-USD (may drop depending on orders)
+ p&p:
outside europe 4.-USD 1 PCB, 8 USD 2+ PCBs
europe 3.-EUR
deutschland 2.-EUR


i won't take any money until i hold the boards in my hands, so just post in this thread, PM or email me if you are interested (following the recommendations for PCB sales on electro-music.com).

This is not a beginners project. some wiring has to be done, and more than 10 ICs are placed on this 4.9x3.9in PCB.

for more information refer to 1st post in this thread.

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cheers,
matthias
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tommi



Joined: Dec 05, 2007
Posts: 247
Location: Italy
Audio files: 3

PostPosted: Mon May 03, 2010 6:52 am    Post subject: Reply with quote  Mark this post and the followings unread

Hello Fonik,
I confirm my interest for one PCB!
Thanks.

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a100user



Joined: Oct 28, 2003
Posts: 158
Location: UK

PostPosted: Mon May 03, 2010 8:46 am    Post subject: Reply with quote  Mark this post and the followings unread

Definitly one for me please
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magman



Joined: Feb 04, 2009
Posts: 363
Location: Liverpool, UK

PostPosted: Mon May 03, 2010 9:41 am    Post subject: Reply with quote  Mark this post and the followings unread

Matthais,

I've been watching this project with great interest, glad to see its finally coming to fruition.

Put me down for 2 boards please.

Regards

Magman
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lexvortex



Joined: May 14, 2008
Posts: 155
Location: Toronto

PostPosted: Mon May 03, 2010 10:01 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Fonik,

I'll take one PCB!!

Cheers,
Dave
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Skrog Productions



Joined: Jan 07, 2009
Posts: 1217
Location: Scottish Borders
Audio files: 159

PostPosted: Mon May 03, 2010 11:13 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Fonik .

fantastic news Smile , i look forward to their release & invoice .
Very Happy
Thanks
Dave

(2 - pcb's)
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jaidee



Joined: Oct 28, 2007
Posts: 44
Location: Newcastle upon Tyne, UK

PostPosted: Mon May 03, 2010 12:08 pm    Post subject: Reply with quote  Mark this post and the followings unread

One PCB for me.

Thanks Fonik!
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fonik



Joined: Jun 07, 2006
Posts: 3950
Location: Germany
Audio files: 23

PostPosted: Wed May 05, 2010 6:19 am    Post subject: Reply with quote  Mark this post and the followings unread

hi all. due to the increasing interest in this project i will be able to drop the price a little bit (see below):

the pricing:
1 PCB 10.-EUR/13.-USD
+ p&p:
outside europe 4.-USD 1 PCB, 8 USD 2+ PCBs
europe 3.-EUR
deutschland 2.-EUR

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cheers,
matthias
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adambee7



Joined: Apr 04, 2009
Posts: 420
Location: united kingdom

PostPosted: Wed May 05, 2010 6:33 am    Post subject: Reply with quote  Mark this post and the followings unread

that's a good price man. Very Happy Very Happy
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xpmtl



Joined: Aug 10, 2007
Posts: 162
Location: Brussels, Belgium

PostPosted: Wed May 05, 2010 7:38 am    Post subject: Reply with quote  Mark this post and the followings unread

I'll take one board

Thanks

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TekniK



Joined: Aug 10, 2008
Posts: 1059

PostPosted: Wed May 05, 2010 7:59 am    Post subject: Reply with quote  Mark this post and the followings unread

Matt,question (maybe weird):

Is it possible to use this pcb and poppulate it to use it only as a simple 8 step sequencer (so without the adc thing etc),can maximum ic's been ommited?
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fonik



Joined: Jun 07, 2006
Posts: 3950
Location: Germany
Audio files: 23

PostPosted: Wed May 05, 2010 8:09 am    Post subject: Reply with quote  Mark this post and the followings unread

TekniK wrote:
Matt,question (maybe weird):

Is it possible to use this pcb and poppulate it to use it only as a simple 8 step sequencer (so without the adc thing etc),can maximum ic's been ommited?

sure. the easy way would be just to wire on-off switches, instead of the on-off-on. then one could leave off the ADC, the AND-gates, and the OpAmps/Comparators of the CV processor.
one could even leave off the buffers and switches, and drive the steps/potentiometers directly from the 4017 (it supplies enough current for two channels in my experience). then on-off toggle switches would have to replace the CMOS switches...

alas, i will have to add those options to the building docs, right?

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cheers,
matthias
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magneticstripper



Joined: Jan 12, 2009
Posts: 25
Location: San Francisco

PostPosted: Wed May 05, 2010 8:27 am    Post subject: 2 please Reply with quote  Mark this post and the followings unread

(2) thanks.
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krisp14u



Joined: Nov 11, 2006
Posts: 206
Location: uk

PostPosted: Wed May 05, 2010 11:34 am    Post subject: Reply with quote  Mark this post and the followings unread

4 Please matthias
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ach_gott



Joined: Sep 09, 2008
Posts: 79
Location: Chicago

PostPosted: Wed May 05, 2010 12:40 pm    Post subject: Reply with quote  Mark this post and the followings unread

4 please, mattias.
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TekniK



Joined: Aug 10, 2008
Posts: 1059

PostPosted: Wed May 05, 2010 2:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

fonik wrote:


alas, i will have to add those options to the building docs, right?


hey matt,i don't know,maybe..
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source66



Joined: Jul 11, 2007
Posts: 14
Location: Sweden

PostPosted: Wed May 05, 2010 5:03 pm    Post subject: Reply with quote  Mark this post and the followings unread

In for 2. Thanks
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tomcat



Joined: Oct 14, 2005
Posts: 141
Location: earth

PostPosted: Fri May 07, 2010 3:02 am    Post subject: Reply with quote  Mark this post and the followings unread

3 for me please Smile
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a100user



Joined: Oct 28, 2003
Posts: 158
Location: UK

PostPosted: Fri May 07, 2010 6:26 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Matt,

I'll up my request to 2 please.

Thanks

David
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