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      CommentAuthorLuap
    • CommentTimeJun 23rd 2009
     
    I figure for those of you that bought and built your WTPA's, you are also likely to have made other stuff too??

    I recently built a fantastic amplifier for my studio monitors. Although I cheated a little and based it on pre-assembled boards from Hypex. Expensive, but more than worth it. Its not much to look at, but it sounds the part for sure. May post picts later for anyone interested.

    I'd really like to make one of those XoXoX 303 clones, or whatever its called. But somewhat annoyingly, I stuck myself on the waiting list for a kit well over a year ago, only to find via their forum that they can't be bothered to make the kits any more. They could have bloody said so!? Even more annoying is that the website is still accepting people onto the waiting list too. And.. conveniently, some enterprising folks have managed to set up shop selling completed XoXoX box's? Seems a bit fishy to me, but there you go..

    So, erm, yeah, what have you made? Or what are you thinking of hammering together next?

    Paul
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      CommentAuthorAltitude
    • CommentTimeJun 23rd 2009 edited
     
    jeez, dont know if I even remember them all:x0xbox #13, MBHP SID v1, MBHP SID V2 (MB-6582), MBHP CV (max525 based), MBHP GM5, PAIA fatman, Introspectiv 9090, Oakley TM3030 x 2. In the finishing stages are a MB808 and a JH triple chorus. My "active" projects are an ASM-2 and a SSM2044 filter upgrade for my SID

    some pics are here:
    http://www.new.facebook.com/home.php#/album.php?aid=64191&id=772453544
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      CommentAuthorToddBailey
    • CommentTimeJun 23rd 2009
     
    The only kit I ever built (that I didn't design) was a Dutchtronix Oscilloscope Clock, just because it was such a thorough and badass design.
    http://www.dutchtronix.com/ScopeClock.htm
    Jan totally nailed this. Bug free, feature rich, and good looking. And cheap.

    I once designed a MIDI to C64 interface to rock out the SID, but it was a real pain in the ass to use. It used an MCU to control the keyboard matrix so you could use MIDI to control any c64 synthesis program that already existed. I mapped it to Cybertracker and Cynthcart keybindings and set it up to be easy to map it to more stuff, but you still had to carry around the Commodore's monitor, disk drive, etc etc. It seems like whoever does those SID midibox things really spent a lot of time on them.
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      CommentAuthorAltitude
    • CommentTimeJun 23rd 2009
     
    haha, that scope clock is sweet! The midibox sid has really kinda evolved with the evolution the 8 bit PIC. The big one now uses 4 pics connected via CAN and 8 sids but it definitely has been a group effort by a lot of ppl
  1.  
    I haven't inasmuch built much yet :P

    I've made a sorta Theremin out of a 556. And I made this sucka:

    It's cool, but kinda a one trick pony. I've been meaning to add an envelope follower to affect the PW as the static effect is pretty desiccating to the signal, or try just building a discrete transistor Schmit trigger with some pots to affect the biases (make it noisier or gate-y-er). Adding a 4024 divider as a suboscillator had some interesting results too. Since it has a Schmitt built into its input, I've been meaning to try add PWM to each output channel. Maybe via this: http://www.uni-bonn.de/~uzs159/triphase.html

    I am mostly working on a modular system though.

    An old sildeshow: http://s10.photobucket.com/albums/a102/erschlagener/de_engineered/?action=view&current=c0bcbb6f.pbw

    There's been documenting of those blunderings on my LJ: http://de-engineered.livejournal.com/
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      CommentAuthorLuap
    • CommentTimeJun 23rd 2009
     
    Hey Todd, thats pretty neat!
    Maybe you have also seen the scope clock on here? http://cathodecorner.com/ Kinda similar idea.
    Those guys also make a Nixie Tube watch. Nerdy, but cool. Steve Wozniak (of Apple fame) has one and enjoys showing it off..

    Altitude.. Im looking into making an x0xb0x soon despite the fact theres no full kits offered any more... But sourcing all the little parts on my own is going to be a huge pain in the ass. I like making stuff, and I don't mind sourcing the occasional part here n there. But not every last part from a multitude of different suppliers :(
    btw, I need a facebook account to see the pict you posted.

    Paul
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      CommentAuthorAltitude
    • CommentTimeJun 23rd 2009 edited
     
    Luap:

    There are really only several parts on the x0xb0x that are difficult to source. Personally, I sold mine at a pretty sizable profit and built a TM3030 which is the oakley clone. That has options for modern or classic parts, is about half the cost, and you can get two of them into a 1u rack. Personally, I like it a lot better sonically that my x0x. It is a much tighter spec'd machine and both of mine sound almost identical. x0xb0xes are all over the place and it is kinda of a crap shoot where you end up sound wise (just like the real one)

    Now for some pron:




  2.  
    Hey Luap - you can get a rare parts goodie bag here: http://www.ableideas.com/x0xb0x/index.php?page=details&prod=75&cat=18&group=9

    Using the BOM you can get somewhere on the x0x forum, I found you could build a stock x0x for about $250 or so.

    And hawt pr0nz Altitude.
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      CommentAuthorLuap
    • CommentTimeJun 23rd 2009 edited
     
    "Hey Luap - you can get a rare parts goodie bag here: http://www.ableideas.com/x0xb0x/index.php?page=details&prod=75&cat=18&group=9 "

    I take it you didnt read this then ;)
    http://www.ladyada.net/forums/viewtopic.php?f=29&t=8229

    Seems not very many people that ordered from that guy actually got their order. With many people requesting refunds after a few months of waiting. Looks like there is a good alternative source for the rare parts though, so i'll give in and do this the hard way and get ordering soon.

    Altitude. I love the quality of your work! Very impressive.
    As for for TM3030, it looks pretty nice. But I have a couple of rack synths that are very similar already. A Doepfer MS404 & Control Synthesis Deep bass 9. What im looking for now is a nice self contained unit with the programmable sequencer. The x0xb0x looks to tick that box nicely, plus the USB feature will be handy.
    btw, whats the box with all the green lights/knobs?

    Cheers! Paul
    • CommentAuthorsmrl
    • CommentTimeJun 23rd 2009
     
    That'd be a Midibox 6582.
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      CommentAuthorAltitude
    • CommentTimeJun 23rd 2009
     
    Paul -> Laup (klever btw, just figured that one out)

    If a 303 style sequencer is what you are looking for, then a x0xb0x is where you need to be looking. We did a lot of work on the 1.0 release to get the most out of the AVR and the 3rd party upgrades are really well done also. Limor/Adafruit has been growing quite a bit so I can see why she cannot put the effort in on the large demand on the kits. Rolling your own is not as bad as it seems, I did the retro build for my 3030 and the 1593s and 2291s were $12 on ebay for two sets. Everything else is available from either Mouser or www.dalbani.co.uk (and I mean EVERYTHING). Between those two, you should be able to source all the goods for less than the kit price.. Price it out and let me know if you are short on anything, I have a big ol'box of vintage ROHM/Roland parts
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      CommentAuthorLuap
    • CommentTimeJun 23rd 2009 edited
     
    Altitude, I appreciate the offer of help, thanks a lot :) Theres a guy on the x0x forum that sells a kit of the rare parts alone, so that looks to be covered. So then all i'd need is all the available x0x bits on the adafruit site (panels/fascia, pcb's and micro controller etc), and the rest I can get from dalbani.co.uk ? Im in the UK, so a UK supplier for parts would be nice.

    Paul
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      CommentAuthorAltitude
    • CommentTimeJun 24th 2009
     
    laup: No, Nikko/Delbani is a good source for the old parts. If you are sorted there, then everything else will be available from the usual suspects out there (Rapid, Farnell etc). Any major electronics supply should have everything.
    • CommentAuthoretaoin
    • CommentTimeJun 24th 2009
     
    Kits relatively few, although I built three x0xb0xes; one for myself (since sold) and two for other people.

    Ongoing project is my modular: http://www.casia.org/modular/

    Late 80's and early 90's I was mostly extending Z80-based home computers, doing a lot of home design and assembler programming. Picked up building again (and synths this time) around 2003.
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      CommentAuthorglitched
    • CommentTimeJun 24th 2009 edited
     
    @Altitude
    Oh, you're that Altitude! I recognize the pics of the "9090". Such a great paint job.

    I have modified several things, including an MC-202, tr-606, dr-110, and x0xb0x, but have only built a couple cool things. My pride and joy is the "Military Device" (dual MB SID - 6581/8580 with feedback pots):

    http://drop.io/mbsidv2

    Oh, I also built one of these (the plans for which came to me when I bumped my head on the toilet on November 5th, 1955):
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      CommentAuthorAltitude
    • CommentTimeJun 25th 2009
     
    glitched: Yes. it is I :P
    How did that liquid nail work on the anodized panel?
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      CommentAuthorglitched
    • CommentTimeJun 25th 2009
     
    The liquid nails didn't work very well at all. (I tried it because it was on sale.)
    After a day or so, the simple act of lightly tugging on the cable attached to the LCD made the screen fall off. I had forgotten to sand the area before applying the glue, so I did this...but a day later, the bond was no tighter.
    A couple days later, the control panel (with the buttons) fell off.

    I switched to some standard, two-component epoxy (the clear stuff) and haven't had an issue since.
    People on the midibox board love this JB Weld stuff, but it's so cumbersome and messy to work with.
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      CommentAuthorLuap
    • CommentTimeJun 25th 2009 edited
     
    Altitude (Sorry, i feel im derailing my own thread somewhat!) I have now ordered a set of all the rare parts for my x0xb0x build. But you think that besides the bits that adafruit still sell, I could source everything else right here in the UK? I have an RS account ( http://uk.rs-online.com/web/ ) so im hoping I can get the multitudes of other bits and pieces via them. [EDIT] Looks like i'll need more than RS, but hopefully other UK suppliers will work out.
    Im just trying to trim down the amount of suppliers I need to deal with, particularly international ones.

    Thanks! Paul
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      CommentAuthorAltitude
    • CommentTimeJun 25th 2009
     
    I had no success with the jb weld at all. I have some brutal industrial stuff here that works beautifully but it cures at 125 deg C so I cant use it on screened panels
    •  
      CommentAuthorsnsr
    • CommentTimeJun 25th 2009 edited
     
    I'm just about finished building an arduino-based monome clone, but I haven't yet made anything that actually makes sound. Super excited to get started on my WTPA when it arrives. Also built a couple of midi interfaces for my speak&spell and speak&learn.

    Altitude, amazing finish work on that x0x and sid!
    • CommentAuthorstrategy
    • CommentTimeJun 26th 2009
     
    Been away from the forum a few days moving and my project table all packed up :(
    My completed builds: 4ms Noise Swash, Maestro Ring Modulator clone, Weird Sound Generator, spring reverb box, various beginner style guitar pedals. Oh, and the Atari Punk Console of course. The Maestro and the Noise Swash were a lot more complicated than one might expect and the WSG was way easier than I expected. Also more musical. Currently on the bench: Oakley TB3030 (first version- old!), JH Tau Pipe Phaser, modular synth modules, more pedals, Midibox SID and WTPA...
    - Strategy
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      CommentAuthorLuap
    • CommentTimeJul 3rd 2009
     
    A small x0xb0x update. All parts are ordered now. Some started arriving today (Including some cool metal knobs!). The rest should be here within a couple of weeks. But.. The first thing I ordered was the rare parts, and they are not here yet. Which is a little concerning because, well, they're rare! But then they are being sent from some obscure corner on the other side of the planet, so..

    As for building one for $250 or so.. I wish! This one is going to cost me nearly £400 altogether (Roughly $600 in merkin speak). Some of the additional cost comes down to overseas shipping costs plus greedy UK customs charges. On top of that, its costing a little extra due to some modest upgrades. At a pinch im sure I could throw one together for £300 ($450'ish). I could maybe lower it a little more if I sourced more parts from here in the UK (parts would probably cost more here, but there would be lower shipping costs, and no customs bills). But theres so many parts, it seemed like a bit of a chore! If I were to do it again, then maybe.. For now, im doing it the 'easy' way, and even that means dealing with 6 different suppliers!

    Paul
    • CommentAuthorJaseM
    • CommentTimeJul 5th 2009
     
    I'm still new to this stuff. The only things I've built so far are a GorF sequencer and a Cellular Automata Kit. I tried an building a Ruby amp, but I wasn't successful. I'm going to try again after I finish the WTPA.
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      CommentAuthorLuap
    • CommentTimeJul 13th 2009
     
    My freshly completed x0xb0x!



    Im very pleased with it :) It all worked first time too! Apart from the rotary encoder for tempo control doesn't work as well as it should. And through no fault of mine, so I may have to replace that. That and a little fine tuning is all it needs.
    Sounds great though!

    Paul
    • CommentAuthorsealion
    • CommentTimeDec 10th 2009 edited
     
    Just did this:
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      CommentAuthorblue_lu
    • CommentTimeDec 11th 2009
     
    sealion,

    I was intruiged by the dronelab as well - but this kit was WAY to expensive imo. Looks and sounds cool though
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      CommentAuthoro0otini
    • CommentTimeDec 11th 2009
     
    i just built a drone lab too. really cool little kit. a couple of us chipped in and got a group order together for really cheap. great kit.
    •  
      CommentAuthorRodrigo
    • CommentTimeDec 11th 2009 edited
     
    Yeah, that's pretty expensive. Though it does seem cool.
    •  
      CommentAuthorblue_lu
    • CommentTimeDec 12th 2009
     
    rodrigo - that's exactly what I wanted to communicate :)
    • CommentAuthorDeFex
    • CommentTimeFeb 27th 2010
     


    its a arduino wavetable oscillator with envelope generation and DAC outputs. the arduino can generate 3 waveforms which can be detuned, as well as 2 envelopes which are output to the DAC reference voltage and filter frequency. the filter is an ebay bought (from evil hong kong mafia apparently) SSM2044.

    the 3 oscs each can have a different waveform, osc 2 is mixed with osc 1 and can be detuned for unison, osc 3 is currently reserved for the accent. currently i have 9 wavetables, but i will add ore near the end, otherwise it takes too long to upload them to the arduino every time i change the program. the ISR(interrupt service routine) that generates the wavetables uses about 1/2 of the processing power now, and i dont want to go much higher.

    In the video all the controls are via direct connected pots but now i am sending a lot of the controls Via MIDI(eventually all of them) there will be a seperate arduino which just does MIDI control and presets etc. and merges it with the incoming MIDI notes. (and sequencer LFO etc)

    now i have a "accent" which can trigger a seperate envelope which can go to the filter cutoff and/or osc 3 level. another vid will come soon.

    eventually i will make an arduino shield for the seeedstudio mega which will have the DACs and a filter (not the SSM, it has to wotk on 5 volts, and its a bit expensive) MIDI in and audio out
    it will also have a header to put an http://www.oct-distribution.com/ effect board on which can also be controlled by arduino
    • CommentAuthorsealion
    • CommentTimeFeb 27th 2010
     
    sounds good to me.
    •  
      CommentAuthoro0otini
    • CommentTimeMar 1st 2010 edited
     
    hey luap, i'm getting it together to build a xoxbox as well. i just received the rare parts kit from gaetano over on the lady ada board. looks good.

    how did you find the build?
    •  
      CommentAuthorLuap
    • CommentTimeMar 1st 2010
     
    Hey cd.. /thrush, The build went well, and took me 3 days or so. Although it took me a while longer until I finalised the fine tuning. But it's a little monster! I like it so much that I just ordered another kit (A guy in Germany sells complete kits now, and for reasonable money). Im not really a 303 freak mind. I just enjoyed the build and also I think the extra sequencer will come in useful too.
    However, im good at building stuff, but nigh on useless at tracing problems. My current x0x has a small tuning gremlin which im really struggling to sniff out. It's no biggy though, and i'll get to the bottom of it eventually!
    Still, it definitely sounds the part :) It's certainly the best 303 clone i've heard, including hardware and software. That said, not all 303's sound completely alike anyway, so in the next one I build im going to try a different range of transistors to get a slightly different but still authentic tone out of it.
    Im also planning some mods to my original x0xb0x. Namely an additional VCO, and a Wasp style distortion add on.

    Paul
    •  
      CommentAuthorAltitude
    • CommentTimeMar 2nd 2010
     
    Paul,
    Also look into the extend range and over drive mods, I had both on mine and they were very cool.
    • CommentAuthorsealion
    • CommentTimeMar 2nd 2010
     
    I did the resonance mod and am a bit mixed about it, its a bit shrill for much of the range and harder to get those burbling about to break into but not quite self-oscillating. lt was a pain to remove the part and I'm not looking forward to going back. Waitiing on Brian castro's bcbox full mod kit, but it maybe good to have two, one a bit stock. the full range enevlope mod is good, mostly for going down to zero, and i did the bass mod but not sure of what I got from it.
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      CommentAuthorblue_lu
    • CommentTimeMar 3rd 2010
     
    sealion, i have a dronelab kit on my desk right now. it is still waiting to be unboxed, but next week is building week :D

    you still like yours?
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      CommentAuthoro0otini
    • CommentTimeMar 3rd 2010
     
    thanks Luap! whats the address of the german guy that sells x0x kits?
    •  
      CommentAuthorLuap
    • CommentTimeMar 3rd 2010 edited
     
    Thanks Altitude, I'll look into those. Im not especially bothered about the res mod, but i'll likely try the bass boost one. There was another mod i'd like to try too, which keeps the levels a bit more consistent when operating the filter/res controls.

    sealion, Yes thats the plan. One stock and near as dammit authentic x0xb0x. And another modded to the hilt!

    cd.. /thrush, Look for a user on the x0xb0x forums called SubStyler. He's very helpful and speaks perfect English. He has a website www.x0xsh0p.de But so far it has no translation from German. So you are better of sending him a PM. Kit price is €299 which is pretty good I think. But you'll need to supply a 9v ac power brick. And also consider paying the extra €20 for the presoldered surface mount USB chip. I can't be arsed to risk soldering one of those on myself! (I wimped out and did the same for the ram chip on my WTPA too)
    I think shipping is another €15 or so, depending where you are. And no additional taxes to pay if you are anywhere within Europe.
    [EDIT] Seems his website now has some English translation!

    Cheers, Paul
    •  
      CommentAuthoro0otini
    • CommentTimeMar 3rd 2010
     
    brilliant luap! i'm in ireland so i'll definitely give him a shout...
    • CommentAuthorsealion
    • CommentTimeMar 3rd 2010 edited
     
    Blue_Lu: Re dronelab, yupe, I made up two of them, they can be locked together or go stereo and use each one as a mixer for say a buddha box or weevil, and you can mix them in pre-the dual filters, which i quite like. that gives me two outs and four sound units with no wall warts, which i like, cleaner setup being all battery powered to boot.

    At first I found the low pass a bit bland, being x0xb0x hi-Q spoiled, but the more I use it the more useful it seemed for smoothing. The quircky part is it really snarls if the vcos are low, say 2 of 10 for volume and the distortion is rolled back to say 6. The quieter you work with it the more punk industrial it gets, which is backwards to how you instinctively want to go emotionally which is crank it up. i do find the tremelo more a pulse modulator than a 50's surf tremelo, which is what I think of when I hear that word. I also found it tunes in nicely so that you can then work on that slow detune drone phase stuff. if I was doing a mod it might be some light modulators for it, oddly enough its one unit that I'm not sure I'd want to cv IN, tonal modulators is the better way to go.

    But i'd say the dronmatrix by eric archer is the big #1 nasty in my kit, but needs a wallwart. I'd like to have a second one to go with the dronelabs. Did this:
    • CommentAuthorsealion
    • CommentTimeMar 3rd 2010
     
    smrl! what a monster that video synthwtpabendmatrix setup is posted at 4mspedal ! How...