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pcbatterij

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  2. pcbatterij
    Hey all,

    I have bought a transformer from Reichelt with 2*15V AC. For the 9090 I need to have a 4pin connection with the following values:
    pin1: 15V
    Pin2: 0V
    Pin3: not connected
    Pin4: 15V

    You can see in the picture that I only use one output of the transformer (pin 8 and 10, I do not use pin 12 and 14). Can someone tell me if this is correct?

    Cheers Jef
  3. pcbatterij
    Studying for the last two weeks for an exam yesterday, I didn't have a lot of time to put in the project.

    But I now have almost all the parts for the 9090. I used the subatomicglue excel file and got most parts at Mouser.
    The 2sd1469R I had to order from Nikko electronics (wwww.dalbani.co.uk), the rest I ordered from Reichelt.de.
    If you would ever consider ordering parts in Europe: reichelt is a lot cheaper the Mouser, damn I which I first looked at Reichelt :-(

    I waited for the PCB's to come in from Trevor, so I could be sure of the correct size of the capacitors. I have now placed the order at Reichelt.de.

    I have sorted out all the parts that I received from Mouser and Nikko by their values, in such a manner that I can work organized.


    Yesterday I already started soldering (I know I should wait until I have all the parts, but I couldn't wait).
    I soldered in all the parts I have for the power and for the bass drum.
    today I will start with the second board with the cymbal, Hi-hat, MIDI etc parts, because I have not yet tested the power and don't want to waist a complete PCB. fingers crossed that all is ok and I don't burn components of the bass drum section.

    you can also see on the picture that I haven't soldered the transistors yet, I will not use the BC559 and BC549 from Mouser but the transistors I ordered from Reichelt. I also need another capacitor for C8, because the one I have is to wide to fit in between the resistors left and right of that position. When I get that one from the local shop here, I will also need to buy a male and female connector for the power (J8, J11, J23 and J25) because the males I ordered don't fit the females....


    cheers

    Jef
  4. pcbatterij
    Hey all,

    I am starting this blog so everybody can follow how I am doing with the MB9090 project.
    This can also be a place on this great site where people can find answers if they would like to do the same thing or post comments.

    I should also mention that I am not an electronics expert at all, I have only made a few small things before I started building a xoxbox.
    The xoxbox is now working....great machine.

    I have read through files here and gone through other websites and would like to thank the people behind these sites:

    http://members.multimania.nl/diy9090/frames.htm
    http://uk.groups.yahoo.com/group/introspectiv/
    http://live.partlist.org/815/project/item/null#
    http://members.multimania.nl/diy9090/frames.htm
    http://www.eight-oh-eight.org/
    http://www.subatomicglue.com/9090l0g/

    In a first stage I will make the 9090, afterwards I will make a MB808 like sequencer (hopefully I can make a MB Seq v4 kind).

    I have now ordered most parts from Mouser, Reichelt and Nikko electronics and of course the PCB's from Trevor.

    As soon as I have all the parts I will let you know more.

    Kind regards

    Jef
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