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massimiliano

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Posts posted by massimiliano

  1. usb connection questions.

    in MIDIbox HUIs

    Posted

    the maximum resolution provided by the LC protocol is 14bit (faders send and receive pitch bend events), but the PIC only provides a 10bit ADC

    so, i can send 14bit with all controllers, but the real resolution of faders is 10bit, right?

    i have some other questions regarding lc application.

    i need the led lights to be controlled exclusively via midi in messages, is it a simle thing to modify in the code?

    i want to control the leds (not the led rings) with notes and their color with the velocity value.

    is it possible to enable rgb led handling? i think to a function that assciate a different colors to different velocity values... can i write it using c language?

    about rgb led colors... using them simply connected to 3 dout contscts the possible colors will be 8... is it possible to connect each pin to two dout contacts with different voltages?

    this solution could bring 27 possible colors!

    is there enough memory in the pic to add rgb handling and velocity pads to the lc application?

  4. velocity sesitive pads...

    in MIDIbox HUIs

    Posted

    hi massimiliano

    the velocity stuff has already be implemented, browase around the forum and you ll find it

    i know that the velocity sensitive implementation exists... but (this is what i understand) it needs special buttons.

    i want to know if it is possible to write an implementation\algorithm to use normal momentary pcb buttons as velocity sensitive. setting a fixed note duration (good to trigger drum samples) and calculating velocity on the time interval between on hold and release...

    about buttons i got some nice buttons from rjs electronics

    can you give me a link or a picture of this rjs buttons???

    and about the velocity application in the download section of ucapps... can you explain exactly how those spdt buttons work? i know that the normal keyboards calculate velocity values measuring the time interval of two contacts that are lightly distant each other...

    i searched on the web for spdt or push push buttons... and i see that all these switches have a single little button!!!

    Nah you want SPST Momentary ON -aka- Single Pole Normally Open -aka- SPNO -aka- OFF-(ON) -aka- (ON)-OFF -aka- OPEN-(CLOSED) -aka- (CLOSED)-OPEN and if they're toggles you might also use SPDT and then you want (ON)-OFF-(ON) or (ON)-OFF-ON or (ON)-NONE-(ON) or (ON)-NONE-ON or (ON)-NONE-OFF (note they all have a momentary ON throw)

    Now you all know why I hate using search engines to look for switches  ::)

    AAAAAAAAAHHHH!!!  :'( :'(

    please can you give me some links where i can read a king of datasheet of the button i have to buy???

  5. usb connection questions.

    in MIDIbox HUIs

    Posted

    there will be a software application that stores the datas of many pages of assignments. a joystick will send messages to the computer to switch between pages. everytime i select a new page an "update" will occur, so every led ring and motor fader will take his position.

    i want to use eight motor faders, eight endless knobs with lad rings and 24 illuminated buttons. i want to know if there is a way to send and update using non midi datas... to prevent from loosing precious milliseconds..

    how much time is needed to send midimessages of an whole update of all positions for a midibox lc?

    my midi-box concept will work only in combination with his software, so the messages that the box sends are fixed. they don't need to be midi messages, formed of 3 bytes.

    it is possible to use non midi messages of 1 byte or 2?

    and about the midi feedback: i want to know if cubase and othes programs use midi messages or sysx messages to set a new position of a fader\led ring.

  6. usb connection questions.

    in MIDIbox HUIs

    Posted

    is the usb connection faster then midi?

    is it possible to allow a midibox to send and recive non midi datas.

    tis because i'm thinking to a special appication that runs exclusively on pc... i want to develop a software that will communicate with the hardaware box in the faster way possible. the handling of midi will be only software based.

    the project is based on midibox lc, with endless encoders and motorfaders. a lot of updates of the controller position will be often needed, because there will be a joystick to switch between "pages", each containing a set of assignments.

    the software that this midibox will be builded for is energy-xt. a baeutiful modular host.

    since the set of midiout(or sysxout) signals from the box is fixed, i want to know if there is a way to make updates data transfer as fast as possible. (an update is the list of the state of all controllers in the box)

    it makes sense to use usb? or midi is fast enough?

    where can i find more documentation about the midibox lc hardware?

    how the software sequencers like cubase send a feedback to the midibox?

    how dk2 and other midibox lc builders chained many midiboxes in a single unit?

    if i succeed in using a non midi communication protocol between the hardware and the pc-software, is it possible to have a higher resolution for the faders?

    of course i need a lot of help... i have many programming skilled friends that will help me, but the most important hel will come from this forum!!

    thanks

  8. velocity sesitive pads...

    in MIDIbox HUIs

    Posted

    is it possible to use normal on\off buttons as velocity sensitive triggers?

    i think that measuring the delay between on and off we can calculate the velocity. obviously we will have a fixed note duration.

    and even if we hold the button pressed the note will play after the maximum time measurement (example 1,5 or 2 ms)

    i think that under 2ms of the result could be fine

    can someone make this kind of algorithm?

  9. sidstation compatibility

    in MIDIbox SID

    Posted

    F0 00 20 3C 01 00 02 00 01 12 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 2D 45 52 4F 4F 53 20 20 20 20 20 20 04 00 00 00 0F 07 01 01 00 00 0F 07 05 00 00 00 0F 07 00 00 00 00 00 00 07 0A 00 00 07 0F 01 00 0F 07 00 00 07 00 09 04 0B 05 0F 07 00 00 00 00 04 06 00 00 03 00 00 00 00 00 00 00 00 00 02 00 00 00 00 00 0C 00 03 00 00 00 00 04 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 01 00 00 03 00 00 00 00 00 05 00 00 00 02 00 00 00 00 00 0C 00 03 00 00 00 00 04 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 01 00 00 03 00 00 00 00 00 09 0F 00 00 02 00 00 00 00 00 0C 00 03 00 00 00 00 04 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 01 00 00 00 00 01 00 00 03 00 00 0F 07 01 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 03 00 00 0F 07 02 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 03 00 00 0F 07 03 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 03 00 00 0F 07 00 00 00 00 00 00 00 00 00 00 00 00 0F 0F 0F 0F 0F 0F F7

    this is an individual  sidstation patch.

    name: roos

  12. rgb leds

    in MIOS programming (C)

    Posted

    is it possible to implemet rgb leds that will output different colors regarding the position of a knob or a slider or the pitch of a pressed note?

    i think that in combination with happ pushbuttons, the final effect would be beautiful!

  13. how to connect this vfd display??

    in Parts Questions

    Posted

    seppoman, you talked about a slow response of your vfd display... will this delay affect even the sound of my sid?

    However, if you can send me your driver within an e-mail i'll try to connect all. but be patient, since i'm a newbie not so expert in electronixx, could you send me an interconnection diagram for the pinning? will i have to power my vfd separately of the core will send the power to it?

  17. 8580 audio out problems,

    in MIDIbox SID

    Posted

    i'm trying to build a new sid synth stuffed with an 8580 chip..

    the powering of the core is ok (around 5,3v)

    the lcd works correctly

    the interconnection test is ok

    the voltage of the sid is around 8,90v

    when i play some notes i only ear small changes in the noise floor,

    i think that there is no problem on the 8580 chips.. because i have meny ones and the problem is the same with all my chips...

    and i can hear that the slight noisy sound is very similar to the sound of the patch i select

    tryed to remove the crystal and connected to the j7 of the core... but the problem is the same

    tryed to use a different powering but nothing...

    thoug the voltages are ok the synth does not work.

    tryed to substitute the protection transistor but nothing...

    uff!

    with some other 8580 chips what i hear is only 50hz hum and when i play notes that hum is "modulated" by something that i don't understand...

    may be omething wrong in the core?

    i noticed that the current to the sid was too low (ca. 4,5v) so i used the same 5vdc to power separately the core and the sid (74hc595 section)

    used high quality cables for audio... nothing

    it seem that i hear the only typical sid noise floor (with relative changing, tuning, regarding the played notes)  but not the sid sounds!!

    any idea??

  19. how to fire a pic...

    in Testing/Troubleshooting

    Posted

    today i soldered the connections between a core module and a sid.

    but once i powered them i noticed that the core was dead. no midi signals of any type.

    ... i soldered the connections while the core was still in his socket!

    is it possible that the pic has been damaged?? i tryed to reload the sid application but

    the core does not send any feedback message...

    the connection with the computer is ok, i tested it with my first sid-synth(the master) and everything is ok..

    is my pic fired? is it possible to reprogram it?

  20. SIDControl VST-plugin for MBSID V1 (not V2!) by S.M.

    in MIDIbox SID

    Posted

    i have a nice and usefull program:

    energ xt (demo version dowloadable from the site http://www.xt-hq.com/ )

    with this progam you can use vst instruments (and even sequencers, arpeggio generators etc etc...)

    like modules in a modular synth... try to belive!

    but when i load the sid vst control there is not the midi out to connect it to the output of energy xt...

    it's hard to explain... and i'm not so good in english...

    i think that if you dowload the demo version of this great program and try to use this with vst sid control you'll understand.

  22. sid v.2 ideas

    in MIDIbox SID

    Posted

    another nice feature for sound designers:

    when the master core recives a midi sequence (a polyphonic melody or a chord) it "splits" the chord to the four sids and to different midi channels via midi out.

    many vst intruments and many virtual-analog synthesizers are multitimbral and have multiple audio outs... is possible to mix the different outs of a virtual-analog synth (played via mb-sid midi out) with the outs of the sids and then turn them all into voltage controlled analog filters.

    it means... huge sound!

  24. sid v.2 ideas

    in MIDIbox SID

    Posted

    i think that a "multi patch" saving would be useful

    it will contain the four patches per sid and some system configurations...

    including the function of the assing knobs

    i never completed my mb-sid with four cores, i always used it in mono. but i tried it in combination with analog filters... the sound is very rich and powerfull... using four cores with four external filters we have a four voice killer synth...

    a "duophonic" funcion will be usefull for some stereo sound constructions. sid1+2 and sid3+4.

    ... i don't understand what is the "stereo control" that you planned tk. is it for controlling cem3379??

    ... a suggestion about the tb303 distorted sound... i wondered for a great distorsion sound for a long time, and the greatest sound i ever heard is the Real McTube from www.tonepad.com

    i realized a stereo version with special high quality powering. a mono signal is distorted two times by two tubes, so the final sound is pseudo stereo... is strongly different from tb303 sound but is perfect on sid square waves!

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