I2C is not really meant to transmit over long distances, it will probably work at up to 30cm but it has not really been tested. The max length is definitely much shorter than a MIDI cable though 
Whoops ADN is the frach abbreviation for DNA.
It was just some though question I have regarding Loopop’s video.
I’m currently am on the hunt for a 1U Steppy. It seems they are out of stock everywhere.
For the record, I’ve got 2 of them connected together with an adapter. The resulting length is 30 cm and everything seems to work fine
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Has anyone put any fader caps on their Metropolix yet? My Batumi has the same faders and I snapped the black plastic off of one of them when I dropped my phone on it 
Now it is taped up with some painter’s tape but was thinking I’d try to avoid this on future modules.
Thinking bout getting these but of course I’m having a hard time finding them in the US:
https://www.thonk.co.uk/shop/sifam-slider-caps/
I recently added the little transparent ones that WMD sells to all my modules w sliders. They are compact and feel nice to the touch IMO.
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Wild update appeared! 
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Very excited to install this, but can you just confirm that presets will not be effected by updating firmware? If so, is this something we can generally count on in the future?
Your previous presets should be unaffected. If you do find a bug that slipped by in our process, the original data is unchanged if you load a preset and don’t resave it, so we should be able to fix the loading process…
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I thought Metropolix was very much in final product form when it was released (it felt fully featured and worked flawlessly for me) – so I’m amazed at the pace at which Intellijel is pumping out these firmware updates. Thank you!! Looking forward to installing this one now…
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And we’re not even done 
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With this firmware update, is the Metropolix one of the few (the only?) Eurorack sequencers on the market where you can modulate (ie sequence) scales? This feature was one of the main draws to the Sinfonion for me, but of course it isn’t really a sequencer…
I always thought that this was a strange limitation, and it felt like most Eurorack music ended up being modal as a result.
Really excited to see the possibilities with this update…
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YES! I always do some research when adding new features. I could not find another comparable sequencer where you could modulate the scale. I feel like there must be something out there, but I did not come across it. (someone will correct me one day I’m sure)
We tried a few different things, but the combo mod Lock inside a bank and a limit of ten scales for modulation range felt like the right balance, and the easiest to keep track of in mod lanes and on the control knobs. Moving the mod lock inside the same bank can dramatically change your progressions as well, it turned out to be really fun. We lost more than a minute jamming with the scale editor open, hehe.
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That’s what I thought – I’ve owned quite a few sequencers and I’ve been searching all over for this feature. I ended up spending way too much money on a Sinfonion which works well but it’s a behemoth of a module and it doesn’t really make sense in a 7u 104hp case. I knew this wasn’t possible with the Rene2 or the Usta – I even specifically asked Frap Tools about it and was given basically a hard no on this feature request. I also couldn’t find anything for the Vector/NerdSeq/Eloquencer, and wasn’t sure for the ER-101 (which isn’t a real option for most people anyways). There are just so many musical ideas that open up with this feature.
I’m just trying it out now and I can see that it is brilliantly implemented. I hope this doesn’t come off as overly adulatory but the Metropolix is just the perfect Eurorack module – anyone who asks me where to get started, this is where I’ll point them. It remains true to the Eurorack spirit while still being incredibly deep, which sometimes feels like an impossible design balance to manage.
Sorry for the over-the-top accolades but you might have just saved me $1000 now that I can sell some other modules. 
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Hi,
Since Metropolix already supports i2c expansion, is it possible it could support other i2c messages as well? There is a modest-sized group of us using i2c for inter-module communications and it has been wonderful and surprising how well it has worked together.
Some current i2c supported modules:
Teletype, Crow, and virtually all of the Monome modules
Just Friends and W/ from Mannequins
Disting EX from Expert Sleepers
ER-301 from Orthogonal Devices
Nerdseq from XOR Electronics (future expander planned and on roadmap)
16n Faderbank
TXo and TXi i2c expanders
I’m sure that there are more that I am missing.
I would love to be able to hook up the metropolix to my ER-301 and a 16n faderbank! The possibilities are endless.
I don’t believe much in the way of infrastructure is required. In the case of the ER-301, only 2 command types are supported and it only receives i2c, it does not transmit. It receives CV values and triggers on address 0x31 (though it’s configureable from address 0x31-0x35 and that can be changed with firmware).
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Right now we are using i2c to connector to support our own family of Expanders (CVx/Gx). And we don’t have any plans right now to extend support to any other modules at this time. It does require a bit of work on both ends to make this usable.
It’s always in the back of our minds to see what we can do with i2C, but in most cases direct patching CV and Gate will get you better timing and is easier diagnose when something doesn’t seem to be working right.
With all that said, do you have a specific way you would want to see the Metropolix operate with other modules over i2c?
Well there are a couple of methods I can imagine.
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The one I believe would be at the top of the list would be to accept i2c commands to change presets. So a teletype/crow could sequence the preset order into compositions.
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An ‘easy’ one would be to accept virtual CV values via i2c to augment the current X, Y, and Z CV inputs. So in this way, a 16n faderbank could (in theory) control 8 mod lanes for each track. EDIT: Another radical thought would be to use a 16n as a ‘stage expander’ to allow tracks to have more than 8 stages.
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Another seemingly ‘easy’ one would be to copy channel A/B pitch/gate/aux values outward to a particular i2c address…kind of like making a buffered mult with the module outputs and i2c.
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Open up the i2c interface for the Gx expander so that others may address and control it.
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A ‘medium’ ask would be to increase the per-channel outputs (right now OUT A & B) with additional i2c outputs.
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A ‘difficult’ one would be increase the track count and offer a C/D track completely over i2c. I realize that is a huge ask, I’m just throwing out ideas. It also seems like you have already somewhat implemented this with the Gx.
I realize that none of these are easy to implement and non-trivial! However, I believe it would generate a good deal of interest in those folks already using i2c.
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I already provided the specs for the I2C commands used in the Gx and CVx in another thread, so far I don’t think anyone has used them for anything though.
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I saw the CVx information address and DAC/EEPROM information. I didn’t see the Gx information. I will search. Thanks!
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Hm I can’t find it either, so I’ll put it here…
The Gx uses a TCA6408A GPIO Expander. The address is 0x40. You just need to send a configuration 0x03 command with a value of 0x00 to set all the pins to output, and then you can write by sending the output command 0x01 followed by a byte which is a bitmask of the gate values.
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Very cool. Thanks!