Jump to content

Antichambre

Programmer
 View Profile  See their activity

  • Posts

    1,291

  • Joined

  • Last visited

  • Days Won

    101

 Content Type 

Image Comments posted by Antichambre

  2. LoopA Ports

    in Members Gallery

       4

    Posted · Edited by Antichambre

    No space to put the screw inside? Or this is a choice?

    18 hours ago, Hawkeye said:

    But the rubber feet (Reichelt GF 2) will really hold it in place on various synths

    I Like this.

    Because screws are outside, are the small vertical plastic pieces enough? are you not afraid about gap in the middle of front and bottom acrylic panels(plastic bend)?
    Bruno

  4. OLRE16 with Lattice CPLD as Clocking/Addressing interface

    in Members Gallery

       13

    Posted · Edited by Antichambre

    Just now, ilmenator said:

    Interesting topic! Though it's a little bit difficult to follow the discussions taking place as comments in the image section of the forum. Why don't you just create a thread describing the project and put/link your images there?

    Don't worry, I will do it. For you to know that the dokuwiki already exists even if I have to update it also.

  5. OLRE16 with Lattice CPLD as Clocking/Addressing interface

    in Members Gallery

       13

    Posted

    Thank you! :blush:

    Some explanation:
    Here I test the Logic Clocking/Addressing for 32*16 multiplexing around the TLC5958. With all the leds this time.
    Previously I first tried to code this multiplexing circuit directly with the STM32F4 but it was too much process for a very bad result.
    Then I designed an external logic circuit for that purpose, it was working but a was very complex circuit.
    And finally I reduce this big logic circuit to one unique programmable logic ic, the Lattice CPLD.
    Here I used an LC4256V evaluation board from Lattice. It's a TQFP100 with 256 macrocells and this is too much for that purpose.
    So I make the VHDL program very small to fit in a LV4064(64 macrocells) which exists in a small TQFP44 package.
    The components on the breadboard are just for 3.3V to 5V level shifting.

    Voilà!

  9. EA LPC1769 Revision

    in Parts

       9

    Posted

    Will be difficult because, headers on the core are too high no enough space to bend the pins.

    You can solder wires(I keep cutted resistor legs for that) on the pins which are used in your app. Think about the bootstrap pin too.

    But it's not a good solution, for the raison you can imagine.

    Fortunately Lextronic always have a stock of rev B.

     

  11. OLRE16, in colors.

    in Members Gallery

       5

    Posted

    Yes no 3d, no fake lol
    It was not easy. The difficulty was to route the rings. it's 16 rgb leds with 32:1 multiplexing, 2 mux adress by ring.then it's a 48 channels bus which passes thru the rings on full length of the board. This top board is 4 layers but even with that, it was hard work.

  15. MB-TIA Cartridge.

    in Members Gallery

       2

    Posted

    Hi Peter,

    My first intention was to implement a "mini CS" to change patch, bank...But i think it's not necessary, I only use the MasMsp Manager. But I let encoder and 4Digit on definitive PCB, (yet designed), we are not obliged to put and use it and it's difficult to cut squared hole in cartridge.

    Maybe one day firmware will be an MB-link one!

    You asked me for demo sound, you can find it on the blog!!!

  21. sammichSID - naked

    in Members Gallery

       5

    Posted

    Hi,

    Yes i have modified the LCD driver.

    Id=7 "custom LCD", only for adjust contrast @ startup.

    It's a Samsung VFD, 4/8bits connection, model 20T202DA1E.

    ith all features needed.The only difference is that contrast is digitally controlled.

    Find on net @24€.

    For the color filter, I used "Lee Filters", after a little test with sampler.

    I' ve finally choose number 085 "Deeper Blue":

    lee filer number 085

    You can find if in professional audiovisual shop.

    Or for a little stamp i can send it, a letter format is enough, and i bought 1 meter...

    `

    Regards.

×
×
  • Create New...