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levon

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Posts posted by levon

  3. Recording Equipment

    in Miscellaneous

    Posted

    I recently got a Presonus FireStudio Projects. Im glad i went for the 8in 8out rather than something smaller.

    it also has a stand alone mode where you can use it with out a computer, but you need the computer to set up the different mixes.

  5. A commercial SID synth that look damn familiar (seen on MESSE)

    in MIDIbox SID

    Posted

    I am involved in the Blender (www.blender.org) community, and stuff like this happens fairly often.

    People take the source, change any mention of blender in the program and change it into some other bit of software and sell it. Blender is GPL though, so this is entirely legal. Where they go wrong is by using art to advertise the software, with out permission from the artist, and claiming it was made using the renamed software, which it wasnt. so the images get taken down, they have nothing to advertise with, and after a few weeks the software disappears and everything returns to normal.

  7. CAOSS - Controlador Midi Usb Matriz Led Tactil

    in Español

    Posted

    Hey, estoy utilizando el traductor de google para traducir esto en español, por lo que podría ser un poco apagado.

    Im la construcción de una pantalla táctil similar a esto en MIOS en este momento. ¿Sería capaz de obtener su código para tener un

    visita?

    ¿Está utilizando un cable 4 pantalla resistiva?

    gracias, Levon

    Hey, im using google translator to translate this into spanish, so it might be a bit off.

    Im building a touch screen similar to this in MIOS at the moment. would i be able to get your code to have a look at?

    are you using a 4 wire resistive screen?

    thanks, Levon

  9. Update cycle of SRIO

    in MIOS programming (C)

    Posted

    there have been some posts on this before

    Basically the SRIO doesnt update fast enough to do anything higher than 3bit PWM, this is reduced more when doing a LED Matrix.

    I have some TLC5940 PWM LED drivers, and im hoping to get that working with MIOS, but writing code to drive the TLC5940 is just a bit above my programing skills at the moment.

    check out these threads:

    My plan is to use the TLC and a DOUT module to drive a matrix, i have got this working on arduino all ready as it has drivers for the TLC.

  10. Willing to give it a try

    in Fleamarket

    Posted

    You can find most of the information available on the midibox SID on the wiki at http://www.midibox.org/dokuwiki/doku.php?id=midibox_sid

    Once you have read that, if you have any specific questions we would be more than happy to answer them for you.

    If you already have 1 SID chip, and can get 1 more, you might be interested in the sammichSID, a kit made by Wilba to make a 2 SID chip synth. http://www.midibox.org/dokuwiki/doku.php?id=sammichSID

  15. SammichSID LCD problem

    in MIDIbox SID

    Posted

    The LEDs appear to be working... they're showing the pitch of all six oscillators (low pitch in the centre, high pitch to the edges).

    LCD obviously is not.

    Did it show the "MIOS V1.9g" bootscreen before you uploaded the setup_sammich_sid.hex?

    Does it show the "MIOS V1.9g" bootscreen now?

    If the answer to both questions is no, then it's probably some bad soldering/connections to the LCD... it could be at the LCD end or the socket on the PCB.

    Before I uploaded sammichSID, when I turned it on, it showed the top line black for 2 seconds then "ready"

    but I uploaded sammichSID without the top board on so I don't know if it it showed the uploading info.

  16. SammichSID LCD problem

    in MIDIbox SID

    Posted

    Ive finished my sammichSID after some uploading issues (thought the optocoupler was dead..... i had midi input going to break out plug lol)

    All hardware is put together, besides the Bankstick IC's, SID's and Capacitors for the SID's

    I've uploaded Setup_sammichSID.hex from the RC37 folder, which uploaded successfully.

    Now when i turn the Sammich on, the LED's flash a bit (se pic 'turning on', then stop and the following is displayed on the LCD (see 'on') LCD is from Wilba.

    If i press F1, then one column of LED's turn on. I have sent midi data to the Sammich, and the LED's flash on an off deppending on which notes are played, pressing F3 makes the F1 row flash on and off.

    Anyone got some advice as to what might be going wrong?

    cheers

    post-3822-127381584579_thumb.jpg

    post-3822-127381585465_thumb.jpg

    post-3822-127381586341_thumb.jpg

  19. MIDIBoxSIDKontrol VST

    in MIDIbox SID

    Posted

    Ive found a bit of a hack to get around sending Sysex messages via a knob/slider. have a look at the image.

    Im working on an editor for a Roland TD6V Drum kit, which only uses SysEx.

    Using the string template, you can make sure the string never changes length.

    The strSysex updates everytime the Knob moves, so it provides realtime sysex updates.

    hope it helps.

    post-3822-126424913571_thumb.jpg

  20. LED matrix questions

    in Design Concepts

    Posted · Edited by levon

    Ok, no replies, lets try again.....

    Darlington array's or not?

    the original BLM doesnt require these, but the protodeck uses ULN28003 darlington array's and BC547 NPN transistor's. i have seen posts where people say you can not provide enough power with out these, but the BLM seems to work with out it.

    anyone have any input?

    Original post:

    Im working on a LED matrix, just standard Red LED's designed in Eagle CAD to go under my Nintendo DS touch screen (when i get it working )

    Im using a PIC18f452, custom coding my MIOS app. DOUTx4 board for the LED's and i would rather use an LED matrix than 2 DOUTx4 boards.

    Have a few questions.

    1) the Protodeck uses ULN28003 darlington array's and BC547 NPN transistor's, but the MB 6582 SID doesnt use them for the LED matrix. Are these required?

    2) I was thinking of having 2 LED matrices one which is 8x8 red LED's, and another that is 2x8 LED's. is it possible to treat this as one 10x8 matrix?

    3) anyone with experience in PCBs, is my design ok? the LED's are on one side, and the resistors are on the bottom.

    4) the DIL's pinning for the LED's are not what the BLM code expects, is it easier to change this in the code to the correct order? or by the wires going from this board, to the DOUT board?

    cheers,

    post-3822-126397669348_thumb.jpg

  22. FM VSTi control surface

    in MIDIbox FM

    Posted · Edited by levon

    Could i ask what your programming it in? i want to make a similar thing for another piece of hardware, but have no idea where to start, i have done a bit in python, but not the most portable.

    Edit, never mind i see synth edit.

    cheers

  24. Analog pedal controller

    in Design Concepts

    Posted

    I dont think motor faders would work, as for MidiBox they have to be 10K linear, and the core requires feedback from the fader. the EHX micro synth doesnt use 10k pots/sliders.

    http://www.effectsdatabase.com/model/eh/bassmicrosynth has the schematic.

    However i guess you could use motor faders of 10K linear into the Core, and then output CV from the core and try http://www.instructables.com/id/Make-a-Voltage-Controlled-Resistor-and-Use-It/ for the CV to Resistor.. but its a bit of a hack,i doubt it would work to well..

    im sure someone else will know a better way of doing this. you can use a FET to do 0- +5V to control resistance too. Google voltage controlled resistor.

  25. Controlling PIC PINs

    in MIOS programming (C)

    Posted

    ok, some progress on this, but still need a bit of guidance.

    my friend helped me put together this code, calling the pins directly.

    ADCON1bits.PCFG = 0xF;


//OR

//Set which ports are analog and digital

//currently an0 = analog rest are digital

ADCON1bits.PCFG0 = 1;

ADCON1bits.PCFG1 = 1;

ADCON1bits.PCFG2 = 1;

ADCON1bits.PCFG3 = 1;


//Set ANO as the analog channel to do the read from

ADCON0bits.CHS0 = 0;

ADCON0bits.CHS0 = 0;

ADCON0bits.CHS0 = 0;



//VRef+/an2 = VDD  = 5v

//vref-/an3 = vss  = gnd

//an0 = analog in

//an1,4,5,6,7 can be digitial IO, as they are digital

//they are referred to as RA0/RA1 etc



//Turn on adc

ADCON0bits.ADON = 1;


//wait for adc to do conversion

while (AD1CON1bits.DONE == 0)

{

    continue;

}


int result = ADRESL | (ADRESH << 8);


//turn off adc

    I've put this in the main loop, have AIN_unmuxed() and it all compiles fine.

    When i upload it to the midibox it will turn on, and then crash and restart about 5 seconds later.

    Have i missed anything in turning off the MOIS AIN functions?

    cheers

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