Announcing F8R, Eurorack 8 channel fader bank (Now shipping)

Cwejman, Livewire, TipTop Audio, Doepfer etc... Get your euro on!

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Altitude909
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Post by Altitude909 » Fri Nov 08, 2019 6:15 am

Just to reiterate for the 4th time:

YES, the device can be used upside down. The action of the faders can be inverted via jumpers on the back and there will be inverted panels available.

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Sandrine
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Post by Sandrine » Fri Nov 08, 2019 11:47 am

Wow so simple but so useful, great to get away from off panel controllers and yay sliders! This would work great with either of our new backplane midi linked modules coming out next month (yay again!)

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MARK27
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Post by MARK27 » Fri Nov 08, 2019 12:20 pm

Absolutely beautiful work. The voltage switches are a much better option than jumpers and whatnot that end up on the back.

The version I will order will be inverted and black paneled, but I know you are already planning those options.

If I were to have input on its design, I would suggest slots instead of circles for the screw holes, so that it can be shifted <1mm in a rigid threaded strip.

I would probably also ask for printed horizontal lines on the panels along the fader slots. It would be really handy to have a visual reference for 50% or 25% or whatever. Maybe shorter horizontal lines for smaller fractions the way they do on a measuring tape or a ruler.

Well done, Raph!!!

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ersatzplanet
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Post by ersatzplanet » Fri Nov 08, 2019 1:19 pm

leterell wrote:
parasabda wrote:honestly do the graphics and panel really matter?

the important part is orientation of the faders. Is it possible to invert the outputs of the faders with an internal jumper/switch, so that the unit can be mounted upside down but faders functioning in both orientations? obviously gonna add the the depth and the cost of the module but it seems important to a lot of people.

I suppose this could be a cool function too if its was made accessible on the front, sort jump to new values on all faders at once, faders in the middle stay the same.
He seems to say inverting output can be done.

If the design stays symmetrical, I'd prob just flip the panel blank side out and tape a marking strip where the numbers are, to write down what's what in the current patch.
On our SP-4DP we used icons instead of graphics. We use dual pots too so the pot orientation doesn't matter anyway - the sides of the dual pots are wired opposite of each other so one of them will always be the same.

The 8m would be pretty easy to do something similar. Large dots for 10v, smaller for 5v, icons for the channels (though they are not really needed, lines between the sliders would work or nothing at all. I had to do more for the SP-4PD because there were more jacks.

Image
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guigui
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Post by guigui » Fri Nov 08, 2019 2:43 pm

Hey, Altitude909, are you sending some units to Dan at Detroit Modular?

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Post by cackland » Fri Nov 08, 2019 6:00 pm

For those interested in a 'relatable' version to the 16n device: Tesseract Module Sweet Sixteen.

https://www.modulargrid.net/e/tesseract ... et-sixteen

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Post by jamos » Sat Nov 09, 2019 12:23 am

.. software? Why does a device like this need software?
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Post by cackland » Sat Nov 09, 2019 12:27 am

jamos wrote:.. software? Why does a device like this need software?
Well this module can easily be redesigned with analog circuitry, however the OP decided to create it with the Arduino platform

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Post by latigid on » Sat Nov 09, 2019 1:24 am

jamos wrote:.. software? Why does a device like this need software?
Altitude909 wrote:so it will be easily configurable for various midi setups/i2c/etc

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Post by parasabda » Tue Nov 12, 2019 1:46 am

Altitude909 wrote:Just to reiterate for the 4th time:

YES, the device can be used upside down. The action of the faders can be inverted via jumpers on the back and there will be inverted panels available.
apologies! somehow I misread the details in the very first post. Looking at the actual details now its perfect really, looking forward to this module for so many reasons but particularly to get hands with a row of the assimil8tor cv inputs.

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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by Altitude909 » Tue Dec 24, 2019 7:33 am

Ok couple updates:

Hardware is pretty much done.

After working with the beta testers, here are some added features:

Expander with Midi out x3, Midi thru, and 3x properly buffered i2c connections

Ability to change configuration (I2c Master/Follower) via dip switches. This was a constant issue with the 16n where you had to recompile and flash the firmware to switch between the two I2C modes. We added a some configuration dip switches to do that in the hardware.

LED faders

Pics of the new panels

Default configs for ER-301 and Teletype

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Last edited by Altitude909 on Tue Dec 24, 2019 7:57 am, edited 1 time in total.

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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by Zerius » Tue Dec 24, 2019 7:41 am

Will be great module to pair with Assimil8or or ER301

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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by slumberjack » Tue Dec 24, 2019 1:58 pm

nice form factor. do the leds show polarity and strenght?
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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by Altitude909 » Tue Dec 24, 2019 8:41 pm

no, just lights so you can find them in the dark. With these new Sifam caps, i couldnt resist. I'll likely offer LED/non-led (cheaper) versions. the foot print is the same as the 16n faders which I have thousands of so having them as an option isnt a big deal

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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by slumberjack » Wed Dec 25, 2019 7:28 am

sounds legit thx
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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by richie » Wed Dec 25, 2019 7:35 am

Will there be european distributors for the 8m?

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Altitude909
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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by Altitude909 » Wed Dec 25, 2019 7:53 am

Yes. I sell through London Modular, Schneiderladen and a couple other places in Europe

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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by forestcaver » Wed Dec 25, 2019 8:54 am

That looks really nice... great job.

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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by ookrsia » Wed Dec 25, 2019 10:42 am

Looking really nice. Upside down, shallow enough for a skiff, i2c and even in black!

Definately keeping my eye on this!

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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by ersatzplanet » Wed Dec 25, 2019 4:25 pm

I'm curious, why did you use the Arduino? Mainly for the MIDI outs? Are you using the Arduino for any of the CV out level functions?
-James

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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by Altitude909 » Wed Dec 25, 2019 4:54 pm

ersatzplanet wrote:
Wed Dec 25, 2019 4:25 pm
I'm curious, why did you use the Arduino? Mainly for the MIDI outs? Are you using the Arduino for any of the CV out level functions?
Several reasons:

1. Price (and that is the primary one), paying $18 for a teensy 3.2 or even $12 for an LC to use it for something like this is a bit ridiculous
2. onboard USB (the whole digital side is like 6 parts)
3. It's a familiar platform for most people for adjusting the code for various midi/I2C assignments (the code will be available like in 16n)

the CV out stuff is all analog, only the ADC is used on the uC. There is no DAC in play

The goal for this was to keep the long throw faders but have a proper CV implementation. The 16n 0-whatever your USB port puts out CV is really crude and needed to be fixed.

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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by ookrsia » Thu Jan 02, 2020 4:49 am

Now that it's 2020: Any more specific estimate on when this will be available for purchase?

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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by veets » Thu Jan 02, 2020 6:15 am

I would be in for an advance order.

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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by Altitude909 » Thu Jan 02, 2020 8:19 am

ookrsia wrote:
Thu Jan 02, 2020 4:49 am
Now that it's 2020: Any more specific estimate on when this will be available for purchase?
Its getting there. Bit more feature creep but the hardware is done and I have parts to do a small preproduction run here so this month is the plan

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Re: Announcing 8m, Eurorack 8 channel fader bank

Post by Altitude909 » Fri Jan 17, 2020 5:15 pm

Testing is done, parts are in production. Shipping next month

The Module:

https://michigansynthworks.com/products ... c-and-midi

The Expander:

https://michigansynthworks.com/products ... t-expander

Tested on Teletype and the ER-301 (for Follower/master respectively)

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