jojjelito
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Everything posted by jojjelito
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Great work! Looks fantastic -
Modular mania! Must build test moar modules and make patchcord pasta!!!
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I know all about it Man!!!
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I like how most modular systems are not musically useful, instead focused on being esoteric and sounding like crickets on drugs :) Still, fun to build.
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Nyan nyan nyan... Hafta make time!
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Bring it on! I could hook up some friends in need of better gear...
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From the album: Jojjelito's pixx-o-stuff
Thomas Henry/Fonik Super Controller PCB and parafernalia for the modular. The FSM (Flying Spaghetti Monster) likeness was unintentional. His noodly ways manifest themselves in the strangest ways... This and much more will be slaved to the AoutNG and under control by the MB-SEQv4 that sits on top of the 9U of analog mayhem. The SCM did work sans too many hitches, no animal cruelty was used during the testing. Fully vegan this stuff (this time around). This is also the reason why my experiments with the 6582OLED are on hiatus. -
Got my PCBs. I wish there were more chips since this interface rocks Thanks TK!
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Moody as always! Great atmo-track. Ze Modular-kitteh grants ye a power-up mushroom and extra weapons for the boss fight Why is mah MB-seq in the workshop with the modular bits? Make music, ???, profit? J
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Hmm, thar's also a Shruthi VCF board that takes a SSM2044, but that's outside, yet similar to some MIDIbox projects. Also, it's easy to roll your own VCF or quad VCA based on those chips. There's bound to be more SDIY projects that uses those, but use of specialized analog ICs has become frowned upon lately. Some of us old farts who bought stuff as spare parts and nice to haves when it was still cheap will still happily use them *cough cough* *modular panel madness*...
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Just a quick one: The updated gatorade schematic is attached in the original post above. Don't blame me if you use the old version from before I checked against the Core32 J5A/B/C pinning. Remember to always print or open the PDF schematics and sanity check all interconnections so that you avoid getting lied to and potentially costly mistakes Toodles!
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VU meters are dead easy: Use LM3915 for log/dB (this is what you want for audio) or LM3914 for linear (this is what you want for balance, tone, CVs etc). Add some LEDs of your choice color and matching resistors. Done.
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Sanitizing the modular synth design. Got the J5A/B to gate output connection messed up. In other news: No, it ain't world war four, No, it ain't world war four, It's just the apple stretching and yawning, just morning, New York putting it's feet on the floor.
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Meanwhile I own a modular synth as well and highly recommend to connect the gates via a 74HC541, because 1) mostly the 3.3V are not sufficient, and 2) this protects the Core from short circuits (I haven't damaged the core pins yet, but I feel better with this design measure).
Documentation will be updated soon (e.g. schematic)
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Ahh, the 74HC541 was there, there was just some assumptions (or rather backwards pinning) about J5A/B on my take of the card. I did upload a schematic in a thread by Rosch in MIIDbox SEQ, but it had this embarrassing error. Typical...
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Looks really pro! Neatly organized and all that jazz... Where did you get the SID sockets and the nice TO-220 coolers? I spot lots of Reichelt, must go there to take a peek... Congrats on a great build! /J
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Good question on the classic Aout. It has 2 built-in gate outputs, I don't know if that's possible to combine with the gates from the Core32
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Will you make a Bavarian version? Next panel will be Swedish - Klånk skrammel rassel ööööö hähähähä Erik Northman, Greta Garbo, saltlakris, snaps, sill och lite vrål. Sweden makes awesome noise: -
Future 12U panels will be less bread and butter and more outlandish. As you can probably tell I want this to sound harsh - buil in distortion and waveshaper. All inputs are attenuverting (+1 to -1). Getting antsy to finish this, get panels and let it sing. Untz untz untz, skronk and some schranz.
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Hi Rosch, Good idea about the box treatment you mentioned! This rack did work fine for the 9090 (2u but still) but I can see that it may be difficult to fit the CS pcb inside the opening... Here's the PCBs (I'll make 2 from a Eurocard) plus a schematic for the MB-seq CV and gate output - nothing fancy. This is what will be used behind the modular panel in order to use parts of the MB-seq as a MIDI-CV converter driving the modular. A little bit of thanks to TK and others. Edit the 6th of Sept: The pinning to J5A/B on the Core32 is tad off in the included file. New versions are forthcoming, or make a cable that fixes the problems.. Just did some modular work/checking today... Edit the 10th of Sept: Corrected J5A/B/C pinning to the gate outputs. New schemo uploaded: MBSeqOut_1.pdf MBSeqOutx2.pdf
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From the album: Jojjelito's pixx-o-stuff
Getting close to sendoff. Outlines of components are shown. This mockup got printed and real knobs were put in place to check finger clearance. The component outlines are the round circles around the holes. This way we can ensure that everything fits even on the backside. The Germanizer (stereo Germanium distortion) was recently completed and tested. Now the fun of checking that all controls are working as intended begins...© Nope
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Hmm, good questions. I used angled brackets to mount the other PCBs - Eth, SD-card, Core, Aout_NG plus the CV/Gate bufferoni. The entire MB-seq is affixed to an Adam Hall 12HE table rack with a side/back-cover made from plywood. Some ports are then routed/cut in the ply as needed. But, the rest of the rack is a 9HE analog modular so my use-case is atypical. What you could do is to use more spacers and sandwich a back panel against the CS PCB using those, or try to glue something made of plywood against the panel or... This will get you a very shallow rack box. Banzai has some rack boxes for instance, but those are made of thin metal so I strongly recommend using a proper front panel with those. The good thing is that the original front panel makes a good blind plate for mounting XLR jacks or whatever on. My 9090 front panel got drilled by me so that 4 extra holes for screws hold it against the case frame (case bought at Banzai). There is no standard placement of those holes, so depending on your rack you'll end up rolling your own. Remember that cooling the drill is a good thing when drilling aluminum. Guess I should take pictures...
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Hi, First check: Are you in run-write mode pattern edit or step-write? Check the Xoxbox manual here for instance. Two: Does your xoxbox output MIDI at all? Check with other gear. The Xoxbox is hand-built so you're not guaranteed a fully functional Xoxbox unless it's been tested. On the other hand, if the sequencer starts when you start your xox there's gotta be some issue with setting up the MB-SEQ for recording... Good luck! J
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pot 10k Log instead of 10k Lin for CHAOS MAtrix
jojjelito replied to xarolium's topic in MIDIbox User Projects
Hmm, you could build an exponential converter using a transistor, or add/change some conversion curve in the software. The software method will yield awful results due to loss of precision, unless you sample each pot with 10-12 bits and then convert to 7-8 bits using a lookup table. The easy way out - get proper linear pots. It will be painful, but the other way of sampling log pots (sans correction) will feel weird as first you turn and nothing happens, then everything happens at once (or vice versa depending on how you mount and wire the pots). The software correction method is an overhead in terms of the table size or if you use interpolation. Edit: Here's some nice reading to get you started on some ideas. Cheers, J -
Sounds cool! Plus points for the combo of surf and chips
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Don't you get hungry looking at that thing? Less OT: Looks nice, but I've yet to encounter any PCB that needed that kind of tooling setup. It might save time, but time and money is the only thing you got... /J
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Mmm, meditative and tasty. /J
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LPC Nespresso, Mountain Dew, pop music and soldering. Too much caffeine (is there such a thing? /ED).
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my root beer was served by a hippie, or it caused tremendous hair growth when ingested more than once
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The oil in the sassafras (safrole) used for flavor can be transmogrified into MDMA so it might be redeeming for hippies.
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ah now it all makes sense - they cried "you gotta taste it, its fan-tastic" and jumped in circles
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Package arrived safe and sound! Time to populate the boards Many thanks! /J