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noyau
Joined: Oct 08, 2006 Posts: 13 Location: Aix en Provence, France
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Posted: Sun Oct 08, 2006 3:19 am Post subject:
A keyboard for the Sound Lab Subject description: as cheap as possible |
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Hi,
I will make a SoundLab very soon (when I'll have enough money in fact), and I wanted to know if there is a way to make a keyboard.
I know I can buy a MIDI-CV controller which costs more or less 100€ and then buy a MIDI keyboard, but I don't have enough money.
In fact, I wanted to know if I can make a keyboard with a master MIDI keyboard by modifying this keyboard.
I can find keyboards for 50€ and I can spend 70€ in the whole keyboard at the maximum.
Oh, I forgot to add I'm a newbie in DIY and that the SoundLab will be my first DIY project (hopefully, Ray made a good step by step )
I'll make the sequencer too when I'll have enough money and I wanted to know how many money it costed to persons who did it
Kind regards and thank you for you help,
Nicolas |
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Uncle Krunkus
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Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
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Posted: Sun Oct 08, 2006 4:31 am Post subject:
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I would keep the master midi keyboard as it is, (especially if it works okay) and look at either building a Midi/CV to hang off it or a single bus or matrix style DIY keyboard (see Ray's site) later on. The SoundLab may end up costing more (or less) than you think anyway. _________________ What makes a space ours, is what we put there, and what we do there. |
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noyau
Joined: Oct 08, 2006 Posts: 13 Location: Aix en Provence, France
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Posted: Sun Oct 08, 2006 5:15 am Post subject:
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Thanks for your reply Uncle Krunkus
In fact the SoundLab will cost me 100€ (I'll buy that : http://getbent.ecrater.com/product.php?pid=168702)
I can't find a Midi-CV for less then 80€ !
I don't know how I can make and how can a single bus or matrix style DIY keyboard work. |
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Uncle Krunkus
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Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
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Posted: Sun Oct 08, 2006 5:21 am Post subject:
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I doubt you could build a DIY keyboard controller for much less than 80E either. _________________ What makes a space ours, is what we put there, and what we do there. |
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noyau
Joined: Oct 08, 2006 Posts: 13 Location: Aix en Provence, France
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Posted: Sun Oct 08, 2006 5:23 am Post subject:
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Hm...
And what is the price of Ray's single bus or matrix style DIY keyboard ? (with components and so on) |
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Uncle Krunkus
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Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
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Posted: Sun Oct 08, 2006 6:54 am Post subject:
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I reckon it would be less than 60E, but I don't know for sure. _________________ What makes a space ours, is what we put there, and what we do there. |
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noyau
Joined: Oct 08, 2006 Posts: 13 Location: Aix en Provence, France
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Posted: Sun Oct 08, 2006 7:11 am Post subject:
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Uncle Krunkus wrote: | I reckon it would be less than 60E, but I don't know for sure. |
And if I want to use for example my Roland D50 as a master keyboard, what can I do ? |
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noyau
Joined: Oct 08, 2006 Posts: 13 Location: Aix en Provence, France
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Posted: Sun Oct 08, 2006 7:26 am Post subject:
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Maybe I have found an answer to my question :
http://www.musicfromouterspace.com/analogsynth/midi2cv.htm
But I don't understand ANYTHING, I just understand that :
But I duno where is Midi In and CV-Out, I'm really a newb...
Someone tried to make this one ? How many does it cost ? |
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fonik
Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Sun Oct 08, 2006 8:15 am Post subject:
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you'll have to take a look at the schematics. there'll you find the answer. the midi input connections can be found in the lower right corner of the pcb layout (junction to R1 and PIN 3 of IC6. cv out can be found in the upper middle of the layout). ray says:
Quote: | Disclaimer!
BREADBOARD FIRST... This circuit does not work with all MIDI implementations. test to see if it will work with your synth before you do a lot of work and get disappointed. For a much cooler (albeit more expensive) MIDI to CV circuit go here: PAIA |
there's no PCB to buy. so you will have to build it on a strip board or etch your own pcb...
cheers,
matthias |
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noyau
Joined: Oct 08, 2006 Posts: 13 Location: Aix en Provence, France
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Posted: Sun Oct 08, 2006 8:22 am Post subject:
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Thanks for your answer Matthias.
For the PCB, I can pay someone to make it in France
I'll look this schematic in details and count how many it will cost me
Just one question about the SoundLab, what is the voltage of all the Ceramic Capacitors ? |
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fonik
Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Sun Oct 08, 2006 12:30 pm Post subject:
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i'm not sure if the whole thing is worth the effort. what about the EFM midiport? i built one when tom sold it as a kit and now he offers an assembled and tested board:
http://www.ele4music.com/kits.html
concerning the ceramic caps: you might use X7R type caps (10%), you'll get good quality for less money. (stay away from Z5U = crap, only good for decoupling). harry bissels capacitor FAQ (VERY helpful):
http://www.musicsynthesizer.com/txt/caps2.txt
you don't have to care about the voltage at all.
cheers,
matthias |
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noyau
Joined: Oct 08, 2006 Posts: 13 Location: Aix en Provence, France
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Posted: Sun Oct 08, 2006 1:17 pm Post subject:
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Thanks a lot Matthias
What is the midiport you choosed ?
An other question, one more
Do you know where I can find cheap knobs MOTM/MOOG like ?
Thanks |
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fonik
Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Sun Oct 08, 2006 2:58 pm Post subject:
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noyau wrote: | What is the midiport you choosed? |
once i built the RXCV Economy MIDI to CV converter which i use for my modular - works great, no longer available.
the 2nd one is the successor of the RXCV, the MidiPort 3503, which i use for my soundlab - some problems still (not troubleshooted yet, but i build it from a kit and i did't buy the tested and assembled version. see the 3500.doc for details...
you may want to take a look at this thread:
http://electro-music.com/forum/topic-13709.html |
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noyau
Joined: Oct 08, 2006 Posts: 13 Location: Aix en Provence, France
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Posted: Sat Oct 14, 2006 3:17 am Post subject:
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65$ for the 6503 ? It is not as high as the other ones...
But there is only the PCB, not parts, no ?
And what's the difference between the 6503 and the 6505 ? |
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fonik
Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Sat Oct 14, 2006 2:45 pm Post subject:
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noyau wrote: | But there is only the PCB, not parts, no ? |
the PCB is assembled, all parts are mounted on the PCB, including the programmed PIC.
Quote: | And what's the difference between the 6503 and the 6505 ? |
the 3503 derivates pitch cv, pitch bend cv and gate from one midi channel, the 3505 delivers only gate signals (up to 16) and is meant for drumcontrol... there's a 3500.doc explaining all modules of the 35er series.
cheers,
matthias |
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noyau
Joined: Oct 08, 2006 Posts: 13 Location: Aix en Provence, France
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Posted: Sun Oct 15, 2006 8:00 am Post subject:
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Thank you Matthias for your answer.
But I don't see very well the difference between the 3503 and the 3505... What is the best one for the SoundLab ?
Quote: | the 3503 derivates pitch cv, pitch bend cv and gate from one midi channel, the 3505 delivers only gate signals (up to 16) and is meant for drumcontrol |
As I saw on the pdf document, it seems to be the opposite or maybe I didn't understand anything...
Kind regards,
Nicolas |
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Uncle Krunkus
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Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
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Posted: Sun Oct 15, 2006 8:40 am Post subject:
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For the SoundLab, you want the 3503. _________________ What makes a space ours, is what we put there, and what we do there. |
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noyau
Joined: Oct 08, 2006 Posts: 13 Location: Aix en Provence, France
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Posted: Sun Oct 15, 2006 9:23 am Post subject:
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Okay, thank you
Hopefully it is the less expensive
I'll buy it so, as soon as I have my SL working
An other question (I know, I am boring )
While buying that : http://getbent.ecrater.com/product.php?pid=168702 do you need to buy something other like Ray's PCB ?
Did someone already buy that kit ?
Kind regards,
Nicolas |
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