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Subject: The numbskull electronic tinkerer show !!!


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Original Message                 Date: 30-Apr-10  @  03:04 AM   -   The numbskull electronic tinkerer show ! x0xb0x

nutoniom

Posts: 1345

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[image file]


Welcome...

(no really, i always wanted to say that in a low slightly distorted voice...sigh...)

to The numbskull electronic tinkerer show

Here, I will attempt before your very eyes to put together a monophonic, computer controlled synthesizer: a clone of the Roland TB-303.

Now that everyone and his brother has gone through this build, I feel confident enough that every one and his brother has run in every conceivable problem there is, so I plunge !

Actually it's more complicated than that. i wanted to build one for a long time, but waiting list for kits were almost a decade long (ok, slight overemphasis here, but still...)

Fortunately, ada fruit industries , the people responsible for the birth of thid magnificent clone, have found a deserving heir in the body of

Willzyx who is now supplying express kit through his shop, and soon complete kits. Hurray!!! (note that as i write this , he is out of kits, but he should have some in the coming weeks.)

Now, the x0xb0x being an open source project , anyone can build one for themselve following the provided instructions on the ada fruit site: everything is given out, code, pcb design files, cnc files, everything. But unless your proficient with all this stuff, your best bet is to go with a kit so you don't have to source every component for yourself, which can be daunting, believe me.

so, here I will be documenting my build of a x0xb0x, both for your enjoyment and mine, of course.

see you on the bench : )




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Message 11/66             05-May-10  @  10:39 PM   -   RE: The numbskull electronic tinkerer show !!!

nutoniom

Posts: 1345

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Be there AND be square !!!



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Message 12/66             05-May-10  @  11:44 PM   -   RE: The numbskull electronic tinkerer show !!!

nutoniom

Posts: 1345

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Message 13/66             06-May-10  @  02:20 PM   -   RE: The numbskull electronic tinkerer show !!!

nutoniom

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[image file]


The look of Acid: completed VCF, showing some resonance content on the o'scope


My baby's first likkle acid babble



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Message 14/66             07-May-10  @  01:54 AM   -   RE: The numbskull electronic tinkerer show !!!

damballah

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numbskull's got a scope! looks like some mouser bags in that one pic.

xoxos?



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Message 15/66             07-May-10  @  05:07 AM   -   RE: The numbskull electronic tinkerer show !!!

nutoniom

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little d !


Eh! ''some mouser bags'' ?

I could reorientate as a drug dealer and make a profit just from the savings from the bags !



glad you stopped by.

Ok, as of now, the analog section is completed and it's doing it's TB thing nicely (no slides yet tho, I'm controlling it with a doepfer MC4 midi to cv box, works lovely. I'll post a clip ans some pics tomorrow as I am tired now: the envelope and vca gave me a little bit of trouble.

tata for now



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Message 16/66             08-May-10  @  07:52 AM   -   RE: The numbskull electronic tinkerer show !!!

nutoniom

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Okie, no one said it was going to be all a bed of roses, or whatever. So, I have a problem with the unit, basically, it feels like the decay knob is bypassed and the accent knob acts as accent and decay, weird !

My pseudo diagnostic (read ''wishfull thinking'') is that the envelope and VCA ircuit aren't receiving the apropriate Control Voltages from the micro computer. there is a good reason for that. I haven't build the Computer Controled portion of the circuit. Instead , i'm driving it ''older school'' through cv/gate clipped on the board with test leads clipped to the pcb , fed from my Doepfer MCV4 which is running Seq-303.

So, i really hope I'm looking to deep into it : )

Otherwise, I'm at lost : (

here's a longish , boring recording of me going through the controls:

Analog section test



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Message 17/66             08-May-10  @  08:20 AM   -   RE: The numbskull electronic tinkerer show !!!

nutoniom

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state of affairs, Friday 3:03 AM



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Message 18/66             10-May-10  @  05:02 AM   -   RE: The numbskull electronic tinkerer show !!!

nutoniom

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It werks, it werks !!!

clips to come, I'm tired now.

It turns out that everything was fine, but it needed the uC in place to be able to function properly. I guess it was never design to run as a stand alone synth module driven by cv gate



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Message 19/66             11-May-10  @  01:59 AM   -   RE: The numbskull electronic tinkerer show !!!

nutoniom

Posts: 1345

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This baby is rockin' and it's rockin' pretty hard !!

Expect shitloads of x0xb0x infected tracks to come : )



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Message 20/66             14-May-10  @  12:28 PM   -   RE: The numbskull electronic tinkerer show !!!

Maarten

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Hey JF, nice work(shop). Now close the box and crank out some madness eh! Hope you're well.



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