Jump to content

sonicwarrior

Members
 View Profile  See their activity

  • Posts

    280

  • Joined

  • Last visited

  • Days Won

    1

 Content Type 

Posts posted by sonicwarrior

  1. MIDIbox CV PCB (CORE+AOUT+DINX1+Bankstick) + 2 x MAX525

    in Bulk Orders

    Posted

    "All the parts"?

    Only the MAX525BCPP is missing but that's enough for some real pain in the a**.

    It seems I have to order from a source with a lead time of 12 weeks to get the

    cheapest possible price which is still more expensive than my calculated price.

    I'm sooo happy when all this is over. It proves my decision that this is my

    last big groupbuy. In the future I will do only PCB groupbuys for my own PCBs

    at most.

  14. MIDIbox CV PCB (CORE+AOUT+DINX1+Bankstick) + 2 x MAX525

    in Bulk Orders

    Posted

    This order is closed? "0 left"

    or can I place a order for some sets? If yes, 4 sets for me  ;)

    This is closed, but nothing happened by now and there is a waiting list.

    It will soon be started and maybe someone jumps off because of the long delay.

    We'll see.

    There is a change in the process: I will only order PICs if EVERY participant wants them because I don't want to take the risk that I'll stay down with these and I don't have the money to pay for leftovers.

    So if someone definately is not wanting PICs either another one needs to order that much more or no one will get PICs with this order.

    Would be a shame because the PICs were basically the reason for the big delay.

  22. MIDIbox CV PCB from suital

    in Design Concepts

    Posted · Edited by sonicwarrior

    This is the thread to ask questions about the MIDIbox CV PCB from suital to

    keep the bulk order thread clean.

    Here is a picture of the PCB:

    MBCV2_06.jpg

    It consists of 1 CORE & 1 AOUT & 1 DINX1 & 1 bankstick on 1 PCB.

    All connections for the MIDIbox CV application are directly routed and therefore there is no

    header for these on the PCB. (CORE J10 -> AOUT J1 / CORE J9 -> DINX1 J1 / CORE J4 -> Bankstick)

    Power connections are for +/- 15 V or +/- 12 V (makes no difference according to suital) in Dotcom or MOTM style.

    You can generate the + 5 V for the digital part from V+ or a different source (Jumpers/Headers are there for both solutions).

    The PCB is 130 mm x 80.3 mm big.

    The first question comes from madox:

    The MIDIBoxCV has a few versions. used in different ways. Could you tell me what are the limitations of this implementation? ARe all the core's headers available?

    Now you are confusing me. There are not that much options for the the MIDIbox CV.  ???

    The following CORE headers are on the PCB:

    J2 (for + 5 V)

    J7

    J14

    J15 (for the LCD)

    J12 & J13 marked as OUT and IN (MIDI)

    The following AOUT headers are on the PCB:

    The 2 unnamed ones with 2 x 4 pins (I think they are for the balanced out option)

    The following DINX1 headers are on the PCB:

    J3 marked as "J4" (for the buttons or buttons + encoder)

    Is there an alternative for the MAX6007B?

    Yes, in this PCB you don't have to use a MAX6007B. The alternative is: LM385-Z2,5 (Reichelt order number).

    See

    http://www.midibox.org/forum/index.php/topic,4026.msg26638.html#msg26638 (sorry, it's in german)

    The LM385 is the TO92 case right from the MAX6007B  on the picture.

    Of course you should not solder both!  ;)

    The documentation can be found here: http://www.sdiy.de/de/projects/midiboxcv.html

  23. MIDIbox CV PCB (CORE+AOUT+DINX1+Bankstick) + 2 x MAX525

    in Bulk Orders

    Posted

    It is not my board design:

    suital from the sequencer.de forum was so kind to create a single PCB for the MIDIbox CV project.

    As prototype PCBs already have been made any further change would require a new prototype PCB and someone who is willing and has the the time to re-design the PCB +

    new stuffing and testing of the prototype. And 32 new resistors and 8 new trimmers will have to be placed somewhere which means a bigger PCB

    which is more expensive + I have to charge the costs of the prototype PCB (prototypes are expensive).

    In my eyes an external solution or modification would therefore be better if you need negative CV values.

    Personally I currently won't need that and I would not be happy with a further delay of this project because I need the

    MIDIbox CV soon.

  24. MIDIbox CV PCB (CORE+AOUT+DINX1+Bankstick) + 2 x MAX525

    in Bulk Orders

    Posted

    I've added a picture.

    TK has made a suggestion to include the PIC in the kit (he would then burn the PICs and send them to me).

    I have to think about that because I don't have enough "IC sticks" (I hope this is the correct translation of "IC-Stangen").

    Anyway I think a Safeshield box (from Warmbier) would be best. Would only add ca. 0,6 Euro to the costs of each PIC but

    you can re-use it at home or use it to store the PIC.

    Here is a picture of the safeshield boxes I mean:

    5510.9.jpg

    But I have to investigate deeper at home.

×
×
  • Create New...