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scube

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Posts posted by scube

  1. Can this push-button work?

    in MIDIbox HUIs

    Posted

    As you can see I'm a newbie in electronics but I've done a research and understood that I need a Single Throw / latching action / Push-Push Switch (NO-momentary). I've found some interesting push-push buttons, I actually love this "anti vandals" design (yes I know that they are expensive) :

    http://www.schurter.ch/wwwsc/con_pg70.asp?language_id=10&page_nr=2&page_res=20

    In particular, the third button of this list (MSM 22 LA) seems to be the right choice for my purposes but I like also some piezo ones. Do you think I can connect piezo buttons to midibox?

    Scube

    P.S. An useful link for newbie : http://www.kpsec.freeuk.com/components/switch.htm

  3. Can this push-button work?

    in MIDIbox HUIs

    Posted

    Hi There,

    I know midibox since two years and I think it's the time to build my own Live controller. I think that my project is pretty simple, I just need 8 sliders, 24 knobs and 8 buttons that will activate/deactivate the 8 channels of Live (activated = led ON / deactivated = led OFF). My questions : is this push-button compatible with midibox and with my purpose?

    http://www.happcontrols.com/pushbuttons/954002xxxxz.htm

    If not..should you suggest me some other?

    Thanks,

    Scube

  4. MIDI latency

    in MIDIbox HUIs

    Posted

    As said above, It's unlikely that they will work as they are audio faders and will be a logarithmic taper not linear (search the forum/google to find out what that's all about)

    Can you suggest me the best linear 10K faders? I can spend 4-5 euros each one. Honestly I searched for fader implementation and I found motorized sliders only..I understood that I have to connect the sliders to AIN modules but I did not found infos about soldering and connections  :'(

    Some suggestions for this also?

    Scube

  5. MIDI latency

    in MIDIbox HUIs

    Posted

    Don't forget the block size dependency if you're running with a PC based native system. A big disadvantage of the PC DAW compared with DSP based processing is, that the PC works in blocks (otherwise it couldn't manage to transfer the data internally to process) and the reaction of a fader move depends on the time until the block is processed. So if you configure your DAW with a big block size, the reaction on your user input will raise.

    Greets, Roger

    Thanks for your suggestions Roger. Unfortunately my PC was well configured..the problem was the UC-33 controller. I remember that the rotary encoders worked very well, with a pretty fast response..the s**it were the faders. Anyway, I know and I agree with you that DSP are better than general purpose CPU..my first audio card was a glorious TripleDAT..I still use it for its realtime spectrum analyzer ;)

    Scube

  6. MIDI latency

    in MIDIbox HUIs

    Posted

    My tip: open the UC-33E case, and replace the microcontroller board by a MBHP_CORE :)

    Best Regards, Thorsten.

    Ahaha :) Honestly I already opened that controller to do a sort of work of art  ::)

    Anyway...1-64 ms are a great timing I think.. I'd like to use ECLER faders

    www.eclerdjdivision.com - products - spare parts

    It's a serious spanish company...do you think I can use their faders? Sorry, I know that I have to study better the midibox documentation  :-[

    Scube

    P.S. thanks for your detailed info

  7. MIDI latency

    in MIDIbox HUIs

    Posted

    Hello,

    A couple of years ago I got an Evolution UC-33E midi controller to control Ableton Live parameters in "realtime"...a disaster. The faders were so slow that it was impossible for me to use them in my live sets..the latency was horrible. So I opted for an audio mixer.

    Sources -> Soundcard -> Audio mixer

    This method is fine for 2/4 stereo channels but the analog way is impossible for 16-24 stereo channels (too large mixer + lot of audio OUTS). So..it seems that I have to use MIDI controllers. I'd love to have a "quasi-realtime" MIDI controller.. how fast is the response of MIDIbox faders? Can it simulate analog faders and fast volume changes?

    Hope it's clear and that no one will take my post amiss  :P

    Scube

  9. Where is the led matrix?

    in Design Concepts

    Posted

    Hey again Scube,

    I think there's one of the example apps in the MIOS download section pertaining to the SID LED display or something. Been meaning to look into that myself (been holding a handful of 4x4 red matrix displays).

    Never did see an answer to that motorpot thing.  :'(

    George

    Thanks Jidis,

    I will find better in ucapps website even if it's strange that there are not dedicated pages for Led matrix  ???

    Anyway..I'm searching other motorpots and you can be sure I will inform you if I will have good news  ;)

    Scube

  12. Motorpots

    in Parts Questions

    Posted

    Yes, it's cheap but it's also quite slow (obviously)  :'( We can read :

    "At 6 Vdc the pot varies from minimum to maximum resistance, or vice versa in about 8 seconds."

    I assume that this motorpot cannot be used for realtime external control.. My new question : what happens when the external signal is faster that 8 seconds?

    Scube

    p.s. another useful search keyword is "motorized servos"

  14. Motorpots

    in Parts Questions

    Posted

    Not to change the subject Scube, but where exactly is that thing "low cost". I remember looking at the stuff when that thread was up, and couldn't even find dealers for any of it (I'm in the US).

    Hello George, thanks for your quick answer. I'm sorry, I think I don't understand well your question. Are you asking me where are the specifications for that "low cost" model? Do you think I have to change the subject of my post? I'm Italian and 1) here is 2.20 am 2) my english is not perfect  :)

    Scube

  15. Motorpots

    in Parts Questions

    Posted

    Hello,

    I know that you recently discussed about motorpots "ALPS 10KBX2" but I don't find anything about them on google. Moreover, the Ucapps MF module page tells me that "They are working without problems, since they are very slow compared to faders." So, my first question is : is the following motorpot suitable for MF module? If yes, do you think it is fast enough?

    http://sakae-tsushin.co.jp/eng_page/item/pmp.html

    http://www.megex.ch/M_Motor_pot.pdf

    The low cost model MPH22A7FCP22E, if I understand well it need about 1 sec for 300 degree (1-turn pot.). I'm searching on google using motorpots - motorized pot / potentiometers - motor potentiometers.. a lot of keywords but I did not found a lot of motorpots... do you have other links?

    Thanks,

    Scube

  16. MBHP CORE infos

    in Design Concepts

    Posted

    The application you load onto the PIC in your CORE module controls how the CORE interfaces with other modules. Your SN76489AN module would conceivably work, but you'd need to write a MIOS interface program to work with it.

    Thanks, now it's more clear. So, every module need a specific application like this?

    MIOS / Download Section / complete applications / midibox_fm_v1_1.zip

    Thanks again

    Scube

  17. MBHP CORE infos

    in Design Concepts

    Posted

    Hello,

    I'm frequenting Ucapps website and forum since some months but I did not start my Midibox yet.. this is because I'd like to understand with accuracy how the Midibox elements work. My answer : How the MBHP CORE manages different sound chip modules? We can wire a SID module such as OPL3 module even if they have a really different architecture. Does the MIOS contain generic instructions for every 8 bit sound chip or does it contain specific code for every sound chip?

    Mmmm I don't know if it's clear, my english and the beers of last night don't help me  :P

    I can explain better using an example (pls consider this like an example, I'm a super newbe) : If I build a SN76489AN sound chip based module, can I connect it directly to the MBHP CORE?

    Hope it's clear

    Scube

    P.S. it should be a great idea...my CBS Colecovision (SN76489AN sound chip) has fantastic bass sound.

  18. PIC BY EXAMPLES : Corso programmazione PIC

    in Italiano

    Posted

    Un saluto a tutti gli amici Italiani. Cercando in giro nel web ho trovato questo interessante documento, completamente redatto in Italiano, che spiega come programmare un PIC. Un ringraziamento a Sergio Tanzilli, che ha realizzato questa guida nel lontano 1991!!!!

    http://www.areasx.com/index.php?D=1&page=articoli.php&id=207&idsezione=

    E' interessante notare come nel documento siano illustrati i metodi di gestione di un LCD Hitachi e di una connessione RS232, proprio come quelli del progetto MidiBox.  :D

    Alla prox.

    Scube

  20. Midibox & C=64

    in MIDIfication

    Posted

    I have a schematic at home for a C64 MIDI cartridge which is the same as the old Siel and Moog ones.  It came with a great program called "Triad MIDI Slave", the schematic is in the text file that comes with that program.  I can't find it online anywhere so PM me in a week and I'll send you my copy from home.  (I'm away till then)

    It would be a lot easier to just buy a Prophet 64 and use the joystick knobs, but I guess you must have some other favourite C64 music software you want to use.

    Is English your first language?  I get the feeling there are some misunderstandings in here, both in questions, and replies.

    Obviously English is NOT my first language, I never studied it and I never spoke it. I'm learning English on web. But usually (this is the first time) I have not problem with people communication. Anyway, consider another likelihood: Your people-interface is not so flexible :P

    Please explain me:

    "You want a C=64 cartridge slot to MIDI "converter" or "interface" not a "control"."

    CUT

    "Then as long as the software running on the 64 can respond to MIDI, you can use any MIDI controller, not just a MIDIbox, to control that software."

    Anyway... thanks for your suggestions, I will try to find "Triad MIDI Slave" cartridge, I will try to hack its code and I will try to include in my software. And After I will try to connect a MIDI surface (interface, controller) via RS-232 port.

    Best,

    Scube

  21. Midibox & C=64

    in MIDIfication

    Posted

    However, what I was saying about using the C64 as it is, and using that 'gizmo' to interface to a midibox, this would be a monumental task.  A lot of programming on the C64 side, and I am afraid you probably could not get any help on that from this forum.  There might be old Commador users here, I am, but I really don't program them (at least not down to the hardware level)  I use mine with an old Sequencial Circuits keyboard that plugs into the game controller port.  The keyboard came with a program that allowed you to use the screen and computer keyboard to program the aspects of the SID.  It is kinda cool, but what I have heard from MidiBox SID units is far superior.

    I'd like to do something like this www.prophet64.com I'm really fascinated by the cartridge concept inserted it in one customized C64 (LCD monitor + MIDI surface). I'm analizing how to realize it and (for the moment) the bigger problem is the midi. Anyway.. I will continue to study Midibox project.. for C64 hard programming I think I have to read some dedicated books and post on commodorian forums. Anyway I consider MBSID really really interesting.

    Best

    Scube

  22. Midibox & C=64

    in MIDIfication

    Posted

    With a midibox, midi-2-com, and the gizmo from the schematic, you will have the hardware to do what you want.  BUT....

    You would need to write a program on the C64 to read the data coming in from the user port, and turn it into useful information that the SID could use.  I don't think it would be possible to get any kind of REALTIME use out of that sort of setup.

    If your C64 is not used for anything productive (gathering dust on a shelf), dissect it for the SID chip and build a midibox SID.  So much easier than reverse engineering/coding.

    Thanks for your explanation, I will study in detail all Midibox schematics and forum posts. I'm really happy to know that the problem has to be solved with C64 programming. Just a question... what is gizmo?

    Scube

  23. Midibox & C=64

    in MIDIfication

    Posted

    If you can't decipher that schematic I'd think twice and three times about getting into this. You'll be getting a lot of education if you manage to make this work. And I don't think there are many people left who can offer much help.

    I don't understand.. Did you build your Midibox without helps? Are you able to decipher all the schematics of Ucapps website? If yes, please take a look at this and help me to understand how I can implement it to transmit MIDI to Commodore 64 serial port.

    http://www.ucapps.de/midibox_to_com.html

    If you are not able, please do not demoralize me and leave this tread to informed people ;)

    Best,

    Scube

  24. Midibox & C=64

    in MIDIfication

    Posted

    you can also use the RS232 with the midibox ltc module.  it may need some custom wiring/coding for use with the c64, maybe someone has already done it with midibox.

    OrganGrinder

    I'm really happy to hear this! I found this link from Ucapps (it's strange, google did not recognize it)  ::)

    http://www.ucapps.de/midibox_to_com.html

    The chapter "Driver Requirements" indicates some PC/MAC drivers. Do I have to find the same kind of drivers for my C64? What do you intend with "it may need some custom wiring/coding for use with the c64"?

    Thanks,

    Scube

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