[4U/LW] Alan & Friends, a take on the Turing Machine

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hox3d
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[4U/LW] Alan & Friends, a take on the Turing Machine

Post by hox3d » Mon Jun 08, 2020 6:44 am

November 2020 update

Rev2.1 is confirmed working!
The repository is here. If you want to do your own batch, all gerber files are in hardware/fab.
All files needed to build are in the build_doc folder (i.e pdf export of schematics, layouts, build notes and BOM).
Boards should be available soon (I hope!).

Original post

Hi there,

So finally after hours of work and debugging stuff, I'm quite happy to unveil another module for LW format: Alan & Friends.
Image


For those who have not heard about the Turing Machine, a popular Eurorack module, it is easily described as a controlled-random looping sequencer. Basically, it spits out sequences of notes, in a random fashion, since your only control over the sequence is the amount of randomness.

In this version, I added some expanders directly on it (those related to sequencing) to make it a meta-random sequencer.
It has multiple trigger outputs, two CV outputs, and can work as a noise source. It only needs a clock input.
It also has the original expanders connectors on the back, so that you can use existing ones.

I modified a bit the circuitry from the original, so the clock should be more robust and the noise source a bit louder; the tuning procedure is also easier.
Also, I made some design choices (omitted some outputs on Pulses, less LEDs than in the original...).

Yes, this topic is also an interest check. This is the second prototype, it works great but there are some minor kludges, so I wonder if I'll order another version. It depends on interest.

Oh, and with the right panel there is no reason that it could not be used with R*S format, since it's 4 rows. It could theoretically work with Buchla too, the CVs are positive and +/-15V should be ok.
Attachments
side.JPG
rack.JPG
Last edited by hox3d on Sat Nov 21, 2020 8:19 am, edited 2 times in total.
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southphillysynths
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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by southphillysynths » Mon Jun 08, 2020 8:41 am

Very cool! Super nice layout, used to have one in euro and deff a cool module, should be very welcome in Serge.

I would certainly be interested in this.
Last edited by southphillysynths on Sun Jun 14, 2020 9:22 am, edited 1 time in total.
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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by puzzlebox » Mon Jun 08, 2020 8:51 am

this looks like a lot of fun!
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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by syncretism » Mon Jun 08, 2020 11:17 am

Wow, that's a beautiful module - excellent use of the Serge aesthetic!
Also, I really like the look of that "Outsie" module.
Last edited by syncretism on Mon Jun 08, 2020 11:19 am, edited 1 time in total.

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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by wavecircle » Mon Jun 08, 2020 11:19 am

Yeah, this is great.

Can you do a demo? I have been thinking about trying to get a noisering into 4u but perhaps this does the same thing and then some...
Instagram: https://www.instagram.com/thezyg/ (lots of Serge)

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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by kumakuma » Mon Jun 08, 2020 11:25 am

Interested!!!

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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by batchas » Mon Jun 08, 2020 2:53 pm

Funny cause 3 hours ago I finished my Serge panel for my Turing machine (1st version)!!! Something I had in a drawer since a few years with a VC-Timer.

EDIT: www.youtube.com/watch?v=i_E_UgouDdg
Last edited by batchas on Thu Oct 01, 2020 3:22 pm, edited 2 times in total.
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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by jaidee » Mon Jun 08, 2020 5:46 pm

I'd be very interested in a PCB/Panel - love the Turing Machine - excellent fit with Buchla systems

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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by cygmu » Tue Jun 09, 2020 4:36 am

Looks excellent. I'd definitely be interested in one of these.

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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by Prunesquallor » Wed Jun 10, 2020 3:22 am

Nice work! Put me down for one.
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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by maskull » Wed Jun 10, 2020 10:29 am

Looks fantastic. Would be in for PCB/Panel.

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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by Biom » Wed Jun 10, 2020 2:03 pm

Congrats! 4u has been missing this one badly

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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by hox3d » Thu Jun 11, 2020 2:23 am

So there are people interested, it's great.
I don't really know how to proceed for the next step, I would feel bad about selling a board in its current state (some fixes are required)...
So I think I'll make another prototype to test another board revision. I'll let you know when those are available and confirmed working.
wavecircle wrote:
Mon Jun 08, 2020 11:19 am
Yeah, this is great.

Can you do a demo? I have been thinking about trying to get a noisering into 4u but perhaps this does the same thing and then some...
Sorry, I don't really have the stuff to record and edit videos. But I'll try. In any case, see the DivKid's video about how the Eurorack module works, since it's basically the same, in a different package.
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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by seal_cobblr » Thu Jun 11, 2020 3:16 am

beautiful! A great addition to 4U

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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by tigersi » Thu Jun 11, 2020 3:21 am

That’s lovely. Nice to see the expanders integrated
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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by Biom » Fri Jun 12, 2020 6:58 am

wavecircle wrote:
Mon Jun 08, 2020 11:19 am
Yeah, this is great.

Can you do a demo? I have been thinking about trying to get a noisering into 4u but perhaps this does the same thing and then some...
Perhaps, this may help:

To my understanding it's based on the Noisering, but goes way further. Also, unlike normal sequencers, it sometimes outputs 2 or 3 cv's and gates simultaneously.
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Turing-machine-Manual-modularparts-658x1024.jpg

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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by KSS » Fri Jun 12, 2020 4:39 pm

It also bears resemblence to the Klee sequencer.

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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by yan6 » Sat Jun 13, 2020 6:59 am

I'd be in for two of these. I really like the panel layout and the added logic functions :tu:

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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by Tombola » Fri Jun 19, 2020 1:18 am

This looks incredible - what a beautiful build!

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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by hox3d » Sun Jun 21, 2020 4:47 am

I tried to summarize the module, for those who find it a bit cryptic.
I don't really know how a Noisering works, so I can't compare...
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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by Prunesquallor » Sun Jun 21, 2020 10:15 am

This thread's a good comparison.

viewtopic.php?t=97460
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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by southphillysynths » Mon Jul 06, 2020 8:35 pm

:bump: Any update on this?
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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by hox3d » Wed Jul 08, 2020 12:55 pm

Oh, yes and no: I decided to make a last revision with minor fixes.
I just have to order a new prototype, but I'll wait a bit for my beta-tester to build it!

So maybe in September PCBs will be available (holidays are almost here, so I don't know if I'll have the time to build it during August).
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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by J3RK » Mon Jul 13, 2020 12:30 pm

Looking good!
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Re: [4U/LW] Alan & Friends, a take on the Turing Machine

Post by the bad producer » Wed Sep 30, 2020 4:42 pm

D2026042-04FE-4EF3-9419-D297FB198E4E.jpeg
Just wanted to say that Alan & Friends is really super, and not only that, it’s a wonderful build experience too! Great stuff Hox3d!

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