Venus Instruments Veno-Echo - Stereo Digital Delay Module

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adam_f
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Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by adam_f » Sun Apr 04, 2021 8:56 pm

Hello!

I've been working on a range of modules for a while now, and finally have something to share! The Veno-Echo is the digital stereo delay I’ve always wanted in Eurorack. I was after a flexible and intuitive stereo delay, which would allow me to dial in the amount of character and wobble, with absolutely no menu diving. Most importantly it goes in reverse! More about the features below. I'm excited for this to be the first (but not the last!) module from Venus Instruments.

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Manual available here
It's on Modular Grid here


ABOUT
• Two separate channels with independent controls for delay time, feedback, and reverse direction. Combine with width and cross feedback, for total control over the stereo soundscape
• Warm wet line high-pass and low-pass filters, with configurable cut-off frequencies and resonance, tailor the character of your repeats
• Artefact-free transitions for all parameter changes. Mash the time controls for stuttering glitch and shuffle effects, or send wild CV modulation to multiple parameters, all without clicks or pops
• Modulation CV input to sculpt your own pitch wobble
• Tap in the tempo or use the clock input, and select a multiplier or divider for each channel, to generate rhythmic patterns which stay in sync with the rest of your system

FEATURES
• Stereo inputs and outputs
• High performance op-amps in the audio path
• Independent delay time, feedback, and reverse controls for each channel
• Tap tempo and externally clockable
• Stereo width and cross feedback controls
• Extensive CV controls, including external modulation input
• Low pass and high pass filters on wet line with adjustable cutoff frequencies and resonance
• Performance oriented filter crossfade control
• Configurable filters to pre or post feedback loop
• Internal modulation with adjustable rate and depth
• Feedback up to 125% to allow for run-away repeats
• Right input normals to the left input for mono to stereo operation
• Gate inputs for reverse switching
• Built around the Electrosmith Daisy embedded platform - can also double as the test bed for your own DSP audio creations!

SPECIFICATIONS
• Audio quality: 24-bit, 48kHz
• Width: 20hp
• Depth: 32mm
• Current draw: +12V 80mA, -12V 80mA (5V 0mA)
• Delay time range: <5ms to 36s
• CV input range: -5V to +5V

I’m currently taking pre-orders for fully built modules and DIY PCBs, and when I have enough interest to order the parts, I’ll be able to give everyone approximate delivery dates.

Prices are as follows:
• Fully built module for USD$250
• PCB and front panel set with SMD parts pre-populated for USD$80
• A bare PCB and front panel set for USD$40
These all exclude shipping, or if you’re in Toronto drop me a line to collect in person!

BOM and firmware is available on GitHub here.

Whilst it’s by no means a hard build, this isn’t a beginner's DIY project as it involves closely spaced 0603 size SMD parts.

Hope you like the look of it, get in touch for any questions or to pre-order.

Cheers,

Adam
Last edited by adam_f on Sat Apr 10, 2021 12:25 pm, edited 3 times in total.


tele_player
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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by tele_player » Sun Apr 04, 2021 10:19 pm

I’d buy PCB/panel/SMD.

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by Karl_Joseph » Sun Apr 04, 2021 11:16 pm

Looking forward to some demos. Silver panel would be dope.
- KARL

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by Stice » Sun Apr 04, 2021 11:57 pm

This looks great, both functionally and visually. Can’t wait to hear some demos.

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by Puscha » Mon Apr 05, 2021 8:44 am

Really looking forward to the demos on this one.

Just curious, are the filters analog or digital? And also wondering what the rationale behind the CV range being +5v to -5v rather than say +10v to -10v with attenuverters?

Also, any thoughts to add a pingpong mode?

Looks great, congrats on your first module! :yay:

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by Dragonaut » Mon Apr 05, 2021 10:04 am

Looks like a very nice design. Provided it sounds any good at all the price seems reasonable as well. Some attractive features, the sculpting on the pitch wobble in particular.

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by Bachelard » Mon Apr 05, 2021 10:06 am

Hey Adam, great-looking module. PM'd you about a few things. Cheers

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by inner_light » Mon Apr 05, 2021 10:13 am

Any plans for a full kit? Keen to hear some demos!
It looks great.

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by Zymos » Mon Apr 05, 2021 12:45 pm

Can’t believe no one has mentioned it yet, but that is a really friendly price!

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by flashheart » Mon Apr 05, 2021 12:59 pm

Puscha wrote:
Mon Apr 05, 2021 8:44 am
Really looking forward to the demos on this one.

Just curious, are the filters analog or digital? And also wondering what the rationale behind the CV range being +5v to -5v rather than say +10v to -10v with attenuverters?

Also, any thoughts to add a pingpong mode?

Looks great, congrats on your first module! :yay:
+/-5v is pretty much the standard CV range. A few modules put out +/- 10v, envelopes vary between 5v and 10v, plenty of older modules (eg. Doepfer), don't. Audio outs are +/- 5v. If you make the CV range +/- 10v it means many modules won't be able to sweep the full range w/o amplification. Make the CV range smaller and you can always attenuate.

Also, doesn't the crossfade feedback essentially give you pingpong?

To the OP, congrats on you first module and a fair price.
I'm not buying a maths though, not my idea of fun...

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by adam_f » Mon Apr 05, 2021 7:43 pm

Thanks for all the interest everyone! Working on getting some videos out soon so you can hear it in action...
Puscha wrote:
Mon Apr 05, 2021 8:44 am
Just curious, are the filters analog or digital? And also wondering what the rationale behind the CV range being +5v to -5v rather than say +10v to -10v with attenuverters?

Also, any thoughts to add a pingpong mode?
Filters are digital. Also I figured -5v to +5V was a pretty standard CV range, but if you wanted it's an easy tweak to change the range by making a few component changes. DM me if you'd like details!

Also yeah so the cross feedback control and width gives you a wide range of different stereo movement in the repeats. As I understand it a full ping pong effect is a mono (or stereo summed to mono) input that is fed into one delay, whose output is fed back to the input of a second delay with the same delay time, and the second delay also has a feedback path back to the first delay's input. The outputs of the delay lines are also hard panned into each output. So you can recreate this on the Veno-Echo if you patch into the R input only, and set the width and cross feedback to max. This works well as a send and return on a mixer (with WETDRY at 100%) as otherwise the dry signal will only be in the R side.

Cheers!

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by Gringo Starr » Mon Apr 05, 2021 7:49 pm

Nice! I love the look. Like everyone else here I can't wait to hear some demos. Very good price too. :tu:

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by adam_f » Mon Apr 05, 2021 8:00 pm

inner_light wrote:
Mon Apr 05, 2021 10:13 am
Any plans for a full kit? Keen to hear some demos!
It looks great.
No plans on a full kit at the moment, but all the parts are easily sourced from Digikey/Mouser and Thonk etc. Thanks!

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by what gives? » Tue Apr 06, 2021 2:29 am

Karl_Joseph wrote:
Sun Apr 04, 2021 11:16 pm
Looking forward to some demos. Silver panel would be dope.
I'm also interested in a silver panel.

Regardless, very nice job! Looking forward to demos.

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by flies » Tue Apr 06, 2021 1:38 pm

Will it be able to change delay length without changing pitch (a la 4MS DLD or fade mode on Chronoblob)? This isn't something every delay needs to do, obviously, but it is something that interests me personally.

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by adam_f » Tue Apr 06, 2021 9:08 pm

flies wrote:
Tue Apr 06, 2021 1:38 pm
Will it be able to change delay length without changing pitch (a la 4MS DLD or fade mode on Chronoblob)? This isn't something every delay needs to do, obviously, but it is something that interests me personally.
Yeah that was my main goal! The internal and CV modulation cause a pitch shift via the doppler effect, but changing the TIME knobs and TIME CV inputs trigger a smooth (and fast) crossfade between the old delay time and the new one.

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by Karl_Joseph » Tue Apr 06, 2021 9:22 pm

adam_f wrote:
Tue Apr 06, 2021 9:08 pm
flies wrote:
Tue Apr 06, 2021 1:38 pm
Will it be able to change delay length without changing pitch (a la 4MS DLD or fade mode on Chronoblob)? This isn't something every delay needs to do, obviously, but it is something that interests me personally.
Yeah that was my main goal! The internal and CV modulation cause a pitch shift via the doppler effect, but changing the TIME knobs and TIME CV inputs trigger a smooth (and fast) crossfade between the old delay time and the new one.
How is the feedback behavior? If I recall, the Modcan Dual Delay (a similar unit w/ built in filters) the existing longer delays would persist or not change when the rate changes and only the new delays would be affected by the rate change. You could still hear the older delays maintain their timing. Does your delay's feedback act in similar manner?

It's been a while, and I could be completely wrong about how the modcan feedback works, but the modcan is a very special sounding delay that to this day is unrivaled... imo. I'm hoping your delay could rival that of the modcan dual delay.

Also, a silver panel would be dope.
- KARL

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by jingo » Wed Apr 07, 2021 4:18 pm

Is it teensy based? Is fw open source maybe?

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by what gives? » Thu Apr 08, 2021 1:27 am

jingo wrote:
Wed Apr 07, 2021 4:18 pm
Is it teensy based? Is fw open source maybe?
adam_f wrote:
Sun Apr 04, 2021 8:56 pm
• Built around the Electrosmith Daisy embedded platform - can also double as the test bed for your own DSP audio creations!

[...]

BOM and firmware is available on GitHub here.

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by Klodifokan » Sat Apr 10, 2021 5:35 am

Hi there,

I've created a Mouser project for the Veno-Echo.
https://www.mouser.com/ProjectManager/P ... 951cd6051a

Some parts have been replaced, with help from Adam, because they are out of stock at Mouser for the moment.

Thank you Adam for your help.

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by adam_f » Sat Apr 10, 2021 12:28 pm

Hello!

I've updated the first post with the first set of demo videos so you can hear what it sounds like. Let me know what you think! :spin:

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by MindStasis » Sat Apr 10, 2021 12:40 pm

Well that just sounds lovely!

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by Dragonaut » Sat Apr 10, 2021 8:46 pm

Yeah, it sounds great.

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Re: Venus Instruments Veno-Echo - Stereo Digital Delay Module

Post by inner_light » Sat Apr 10, 2021 10:53 pm

It seems like it’s capable of degraded tape warble kind of effects, similar to the Lo fi junky too

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