Finishing touches on PedalSync MN3205 Delay Clock Chip

Started by MoltenVoltage, December 18, 2012, 01:29:27 AM

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MoltenVoltage

I'm putting the finishing touches on a PedalSync delay control chip/module for the MN3205.  It also works with the MN3208.

MV-64 has gobs of features which you can pick and choose:

* Tap, Pot, or MIDI Delay time.  Pot and Tap override each other.

* 4 Delay Ratios: 1:1, 1:2, 1:3, 1:4 - selected by 2 pins

* Modulation Rate or Ratio pot - pin selected

  If used as Modulation Ratio Pot, 9 different ratios that are synced to the Delay time: two whole notes; whole note; half note; half note triplet; quarter note (tap speed); quarter note triplet; 8th note; 8th note triplet; 16th note.

* Modulation Offset pot - to offset the modulation waveform from the incoming clock up to 360 degrees

* Modulation Depth pot - up to 50% vs. delay time

* Scalable for 1, 2, or 4 MN3205 chips with 3102 buffers (or not).  2-pin selected.

* Bypass switch - can be used to store bypass status and connected to relay true-bypass circuit, or to turn the modulation on and off.

* Stores and recalls up to 128 programs - all pot and switch positions.

I'm wondering if there are any other cool features that I should add before it's released.

Thanks!

- William
MoltenVoltage.com for PedalSync audio control chips - make programmable and MIDI-controlled analog pedals!

bean

That's a great feature set and quite a bit more than I ever hoped for. I don't have any suggestions, but I'll be the first in line to get my hands on it  :)

Marcvv

Sounds very good!
Would this work with a mn3005/mn3101 ?

If I have two ( parallel or in series) delay lines, would it be possible to control the tempo but have a different tempo division on each?


Jaicen_solo

The only feature I need is for it to be affordable!!!

Give it to me naow!!

teej212

what about a mode like the easter egg on the deluxe memory boy? it cycles through the ratios and causes some cool modulation sounds

~arph

Would be cool if it could find life on mars too  :D

Sounds awesome.. btw

MoltenVoltage

Quote from: Marcvv on December 18, 2012, 06:59:28 AM
Sounds very good!
Would this work with a mn3005/mn3101 ?

If I have two ( parallel or in series) delay lines, would it be possible to control the tempo but have a different tempo division on each?

From what I can tell, pin 7 on the 3101 works the same as it does on the 3102, so it shouldn't be an issue, just a matter of properly adjusting the clock voltage going into the 3101.  I use a JFET buffer on my protptype to get it to 9 volts.

Yes, if you use 2 of the chips, you can have them each working at complementary ratios.  I'm not sure if you are thinking of controlling the modulation tempo or the delay tempo, but they can each be controlled separately.  You could probably also do it with logic chips like decade counters but it wouldn't be saved as part of the program.

If anyone knows a good 3005/3101 kit or project, please let me know so I can test that setup as well.  I've been using BYOC's 3205 delay for prototyping.

Quote from: teej212 on December 18, 2012, 09:48:06 AM
what about a mode like the easter egg on the deluxe memory boy? it cycles through the ratios and causes some cool modulation sounds

How does it engage on the EHX?  I'm thinking that might be cool if the tap button is held down more than a couple seconds.  The other way to do it is to use momentary switches for the Delay Ratio inputs.  That's how it is on my prototype and by pulsing the switches you can get some cool octave/2 octave momentary pitch shifts.

Quote from: ~arph on December 18, 2012, 10:40:31 AM
Would be cool if it could find life on mars too  :D

It might help you channel Ziggy.
MoltenVoltage.com for PedalSync audio control chips - make programmable and MIDI-controlled analog pedals!


Marcvv


It will not be easy to find an mn3005/3101 kit.
The aquaboy is an option but you will have the problem of getting  the almost unobtainable mn3005's.

I have a working aquaboy If i can help by trying out stuff, let me know.


armdnrdy

I just designed a new fuzz circuit! It almost sounds a little different than the last fifty fuzz circuits I designed! ;)

TNblueshawk

Good night you would have an inital influx of people ordering a gazillion of these.

MoltenVoltage

The prototype MV-64 analog delay is up and running.  It's in a rack unit to make it easy to see and because every feature is automated so they can be stored and recalled.  Of course you can pick and choose which features to use.

The datasheet is done and the video is nearly done.

I hope to release the chip in the next few days.



MoltenVoltage.com for PedalSync audio control chips - make programmable and MIDI-controlled analog pedals!


Marcvv

I checked the data sheet: great work done.
Did you try this with an MN3101/MN3005 combi yet?

MoltenVoltage

Quote from: Marcvv on January 10, 2013, 03:19:06 AM
I checked the data sheet: great work done.
Did you try this with an MN3101/MN3005 combi yet?

Thanks for the props!

I have a couple people testing it but there is no reason it shouldn't work with the 3101, it's just a matter of proprely buffering the 3.3 volt output of the chip.

Here's the vid:

MoltenVoltage.com for PedalSync audio control chips - make programmable and MIDI-controlled analog pedals!