PIC based Arpeggiator (Boards available)

Boogdish · Joined: Sep 21, 2009 Posts: 122 Location: Bloomington, IN

Hey everybody,

I haven't updated my website about this yet, but I've got boards coming in for some arpeggiators and thought ya'll would like to know. I just finished typing up some documentation on it:

http://www.bartonmusicalcircuits.com/arpeggiator/Arpeggiator%20documentation%201.pdf

And a quickly done sound sample:
http://www.bartonmusicalcircuits.com/mp3s/arpeggiator%20sample.mp3

In that sample, I'm cycling first through the different note sets, then movement types, then range, then adjusting tempo, then adjusting PWM of gate output.

If you don't want to wade through that pdf, here's the quick version:
This is not a keyboard scanning Arpeggiator. The PIC plays a pre-selected set of notes which is summed with an input voltage. Controls are available for which notes are played and in what order.

There is an internal clock to provide timing. When used with an external clock, the clock control becomes a division control.

In addition to outputting CV, the clock outputs a trigger signal and a PWM-able gate signal on every tick.

I'm selling 1 board and 1 chip for $20 plus shipping ($2 US, $3 worldwide). I ship USPS first class. Any customs fees/tariffs are the responsibility of the purchaser.

Right now I'm only taking pre-sales, I will not charge anyone until I have boards in hand, ready to ship. To reserve a board, e-mail me at Michael@bartonmusicalcircuits.com

andrewF · Posted: Sun Mar 27, 2011 6:12 pm Post subject:

this looks just fantastic!
well done Surprised

ericcoleridge · Joined: Jan 16, 2007 Posts: 889 Location: NYC

How are the notes selected? Or, what kind of interface is possible for inputting notes? Forgive me, I read your document, but I didn't see this information.

Danno Gee Ray · Joined: Sep 25, 2005 Posts: 1351 Location: Telford, PA USA

What part number do you recommend for the shotkey diodes?

bubzy · Posted: Sun Mar 27, 2011 11:44 pm Post subject:

put me down for one please

brother303 · Joined: Nov 02, 2010 Posts: 139 Location: ruhr-area/germany

Hi Michael,

cooool project! afro

Preorder sent...

And one question : Can this unit run on +/- 12V?

Thanks and best regards
Greg

wmonk · Posted: Mon Mar 28, 2011 9:17 am Post subject:

Can you add spots for ferrite beads on the power lines? That way the module won't introduce any RF noise into other modules.
Smile

Peake · Posted: Mon Mar 28, 2011 1:23 pm Post subject:

Ordering one Cool

emdot_ambient · Joined: Nov 22, 2009 Posts: 667 Location: Frederick, MD

Email reservation sent... Exclamation

Sounds like an exciting project. I was wondering, however, what the clicky type sound was on the sound example.

Haven't torn into the docs yet either, but thumb up

emdot_ambient · Joined: Nov 22, 2009 Posts: 667 Location: Frederick, MD

...running this through a quantizer is going to be cool, too. Very Happy

Boogdish · Joined: Sep 21, 2009 Posts: 122 Location: Bloomington, IN

I should have stated earlier also that this project wouldn't have happened if Peake hadn't suggested it, so thanks a lot Peake! This was a great idea!

emdot_ambient · Joined: Nov 22, 2009 Posts: 667 Location: Frederick, MD

State Machine · Posted: Tue Mar 29, 2011 6:23 am Post subject:

OK, reserved mine Cool

This this saved me a bunch of time as I have been wanting to code up an arpeggiator for analog synthesizers.

Nice work !

Bill

Skrog Productions · Posted: Tue Mar 29, 2011 1:25 pm Post subject:

Yes please for 1 pcb & programmed chip.

Great , i have a space in the modular for this Smile

Dave.

befacosynth · Joined: Jul 20, 2010 Posts: 23 Location: Barcelona

State Machine · Posted: Wed Mar 30, 2011 4:59 am Post subject:

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

I'll take one set as well.

Poor backlog Razz

decaying.sine · Joined: Aug 31, 2009 Posts: 92 Location: New Haven, CT, USA

+1, emailed you.

LektroiD · Posted: Fri Apr 08, 2011 11:12 am Post subject:

emailed for 1 thumb up

skylab76 · Joined: Dec 30, 2007 Posts: 38 Location: Austin

This looks fantastic!
Requested 1 PCB+1 chip via email.
Thanks !!

brother303 · Joined: Nov 02, 2010 Posts: 139 Location: ruhr-area/germany

Hi Boogdish,

would it be possible to add a "chord-mode" (like the Toppobrillo Quantimator)?

e.g. 1x CV-in > 3(4)x CV-out to put out the root-note + two additional cvs to form a chord. Would be awesome!

Wink

Boogdish · Joined: Sep 21, 2009 Posts: 122 Location: Bloomington, IN

Brother, I'm planning on doing chording with my "deluxe quantizer" project, which has been in the works for awhile. The current plan is to have one master board for the quantizer which is used to create/store/select scales and chord shapes and then sends out digital information to slave boards which do the actual voltage processing. This way people can build as big or small as they want and can have decentralized voltage processing.

I should be getting Arpeggiator boards in this week, thanks everybody for your pre-orders.

brother303 · Joined: Nov 02, 2010 Posts: 139 Location: ruhr-area/germany

Hi,

LektroiD · Posted: Thu Apr 21, 2011 8:08 am Post subject:

any update on these? Cool

Boogdish · Joined: Sep 21, 2009 Posts: 122 Location: Bloomington, IN

Sorry about the delay everyone. I was told a month ago that it would be 10 days turnaround on getting boards in, and I'm still waiting. I consider myself a patient person but I'm really getting annoyed by this.

The first batch has all been pre-sold. If you want in on the next batch or want to be wait listed in case someone cancels, you're welcome to e-mail me or PM me.

Thanks everybody.