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Thread: Slow construction of ESS9018 dac

  1. #41
    Join Date: Dec 2018

    Location: London

    Posts: 90
    I'm Greg.

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    Finally some progress! The other projects got stalled as a bag pnp transistor is at home, the bag of npn transistors arrived at my work. But I work from home now given circumstances and it is difficult to match pnp and npn which are in different locations.

    So here's the control unit for the display and the DAC chip.
    Almost ready! Still misses the IR diode socket. All the other connectors are there: the power supply, push buttons (can support plenty of them), display and the dac.

    The code is based on HiFiDuino but adapted to my display.

    I have decided not to use the rotary encoder at this stage but hijack the buttons available in my chassic.
    It saves me some mechanical work and maybe will look better.
    Should pressing buttons be too cumbersome I can always install the rotary encoder.
    On the other hand I do not expect to use the push buttons much.
    IR controller should be more practical
    Attached Images Attached Images

  2. #42
    Join Date: Dec 2018

    Location: London

    Posts: 90
    I'm Greg.

    Default

    It is taking shape!
    I got the arduino program working reasonably well.
    The push buttons which were in the chassis are not working great (I believe they are too noisy). I tried different ways of debouncing but could not achieve nice feel to it.
    So maybe a rotary encoder after all.

    Some pics attached. The protective plastic on the screen not removed yet.
    Attached Images Attached Images

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