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

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Altitude909
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Announcing F8R, Eurorack 8 channel fader bank (Now shipping)

Post by Altitude909 » Wed Nov 06, 2019 6:00 pm

I am pleased to announce the Michigan Synth Works F8R fader bank. This device has 8 60mm faders with the following outputs:

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

F8R is a 8 channel, 16hp control surface for Eurorack

Features:

Long throw 60mm faders with user replaceable LEDs
0-5V, 0-10V, -5 to +5V CV ranges per channel
Fully analog CV outputs
I2C communications as master or follower
I2C mode and addressing easily set by hardware switches. No coding needed
MIDI header for one output channel on the back of the device
I2C, MIDI, and CV can be used simultaneously
Arduino codebase for further customization of midi output/I2C data
Available expander with additional midi and i2c outs
Duo Colored LEDs. Red/Green or Blue/Pink


16HP Width, 20mm Depth
Current Draw: +12V 50 mA, -12V 40 mA

Basic usage until the manual is done:

DIP Switch:

Selects Leader/Follower functionality for the I2C port
"Inv" headers: Select the orientation of the device. I define "INVerted" as Jacks on the top. Changing these will reverse the order of the faders in midi and I2C as well as invert their functionality voltage wise.


Expander:

All TRS MIDI Out Connections are the A (official) type. The MIDI in has the PsiMIDI setup so it can accept A or B type TRS connections

Top MIDI OUT: This is the MIDI output of the F8R, if nothing is plugged in here, it normals to the input of the MIDI Mult so you get 3 multiples of the MIDI out

MIDI IN: MIDI Mult input. Plugging something in here will break the connection from the F8R midi output to the. Simply takes a MIDI input and mults it to the 3 outputs. Can be used simultaneously with the top MIDI Out

I2C Outs: The TRS Outputs follow the 16n TRS I2C scheme so tip SDA, Ring SCL. There are 0.1" headers on the inside of the expander which are normaled to the TRS jacks, pluging a 3.5mm cable will disable those connections. The I2C outs use proper I2C buffers so you should be able to make much longer connections to other devices


2HP Width, 22mm Depth, TRS MIDI TYPE A outputs
Current Draw: N/A, Connects to F8R
F8R_Nat_Inv.jpg
F8R_NoLED.jpg
F8R_Blk.jpg
F8R_Blk_Inv.jpg
F8R_Exp_blk.jpg
F8R_Exp_Nat.jpg
Last edited by Altitude909 on Tue Mar 31, 2020 4:49 pm, edited 9 times in total.

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poppinger
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Post by poppinger » Wed Nov 06, 2019 6:32 pm

Looks really nice companion for an ER-301 in a 4ms Pod or something like that. What is its depth?

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doublestewart
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Post by doublestewart » Wed Nov 06, 2019 6:50 pm

Interesting, midi compatibility and a switch to change the voltage range of each slider is a nice touch. Looks like a good in rack alternative to the 16n faderbank.

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Post by XiXora » Wed Nov 06, 2019 7:00 pm

Any upside down panel options?

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Post by Altitude909 » Wed Nov 06, 2019 7:38 pm

poppinger wrote:Looks really nice companion for an ER-301 in a 4ms Pod or something like that. What is its depth?
Less than 20mm. ER-301 is definitely a device we are focusing on. 16n worked reasonably well but really for a euro module controller, its best simply to have another Euro module connected in the back.
doublestewart wrote:Interesting, midi compatibility and a switch to change the voltage range of each slider is a nice touch. Looks like a good in rack alternative to the 16n faderbank.
That was really the inspiration for this. IMHO, there were a LOT of technical issues with the 16n that needed to be addressed and I did it right from the ground up
XiXora wrote:Any upside down panel options?
Yes.

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doublestewart
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Post by doublestewart » Wed Nov 06, 2019 7:52 pm

Altitude909 wrote:
doublestewart wrote:Interesting, midi compatibility and a switch to change the voltage range of each slider is a nice touch. Looks like a good in rack alternative to the 16n faderbank.
That was really the inspiration for this. IMHO, there were a LOT of technical issues with the 16n that needed to be addressed and I did it right from the ground up
That's what I was hearing. I think 8 sliders is a good sweet spot for the eurorack format, much bigger than 16hp would start to take up too much space.

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Post by Cobramatic » Wed Nov 06, 2019 8:02 pm

XiXora wrote:Any upside down panel options?
Yes agreed, it really really needs that for playing in a Skiff.

Hopefully it is simple enough to change the slider direction if needed, but a reversed panel option would be ideal.

Great to have this as an option to the Faderbank 16n - smaller and can be in the rig (next to the ER-310 :party: ).

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brandonlogic
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Post by brandonlogic » Wed Nov 06, 2019 8:05 pm

I agree needs to mount upside down.

Interactive modules almost always go on the bottom row where they are closest to your hands... I don’t get jacks on the bottom for these kinds of modules.
Last edited by brandonlogic on Wed Nov 06, 2019 8:56 pm, edited 1 time in total.

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Post by parasabda » Wed Nov 06, 2019 8:20 pm

+1 for a reverse version!

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Post by cackland » Wed Nov 06, 2019 8:51 pm

Curious as to which linear potentiometers you've used?

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Post by goldi » Wed Nov 06, 2019 11:30 pm

I love my 16n, it’s changed my studio. That said, I do wish it had a 10v option.

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Post by Tumulishroomaroom » Thu Nov 07, 2019 6:16 am

Very interesting. Perfect companion to the ER-301 indeed. I was looking at the 16n but would much prefer to stay in-rack.
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Post by Altitude909 » Thu Nov 07, 2019 7:32 am

cackland wrote:Curious as to which linear potentiometers you've used?
I had them made. Things work a little differently when you're ordering 3000 pots at a time

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Post by Paranormal Patroler » Thu Nov 07, 2019 8:00 am

This looks very intriguing and it's a welcome addition to the controllers available in Eurorack.
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Post by ersatzplanet » Thu Nov 07, 2019 12:16 pm

brandonlogic wrote:I agree needs to mount upside down.

Interactive modules almost always go on the bottom row where they are closest to your hands... I don’t get jacks on the bottom for these kinds of modules.
We made our SP-4DP with mirrored graphics so they can be used in skiffs or in the cabinet. Most controller modules should have this option as using them in a controller skiff if typically the best way to orient them.
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Post by cackland » Thu Nov 07, 2019 1:14 pm

Altitude909 wrote:
cackland wrote:Curious as to which linear potentiometers you've used?
I had them made. Things work a little differently when you're ordering 3000 pots at a time
Oh I know. Nice to hear their custom :)

peripatitis

Post by peripatitis » Thu Nov 07, 2019 1:25 pm

will this work with Teletype, as the 16n?

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Altitude909
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Post by Altitude909 » Thu Nov 07, 2019 4:00 pm

peripatitis wrote:will this work with Teletype, as the 16n?
That's the plan

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Post by yeatsvisitslincoln » Thu Nov 07, 2019 11:12 pm

This looks killer. I always love when I can keep everything in the box just to make playing out super easy.

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Post by Astrolabe23 » Fri Nov 08, 2019 12:04 am

The symmetrical layout of this panel would make it possible to flip the panel over so the back side is showing with the reversed graphics for "upside down" use. It would cost more to print a panel on 2 sides so I would be more inclined by James suggestion of graphics that be read in both orientations.

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Post by Dennis » Fri Nov 08, 2019 2:21 am

all i could wish for in my live rig for better playability :hail: :love:

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Post by LDS » Fri Nov 08, 2019 2:30 am

Nifty!

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Post by jbrandtp » Fri Nov 08, 2019 2:43 am

Looks very nice indeed! But patch-points on top, please!

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Post by parasabda » Fri Nov 08, 2019 3:01 am

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.

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Post by leterell » Fri Nov 08, 2019 3:49 am

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.

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