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Thread: New Teensy 4.1 DIY Synthesizer

  1. #126
    Senior Member Rolfdegen's Avatar
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    The 1st draft in 3D


  2. #127
    Senior Member Rolfdegen's Avatar
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    It is progressing ..


    The 3D model of the motherboard. The board is roughly the size of a laboratory card in euro format (160 x 100).


    The Fx module is simply plugged onto the back.







    The current prototype



    Greetings Rolf

  3. #128
    Senior Member Rolfdegen's Avatar
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    Hallo friends


    The board is now ready. We thought about integrating an expansion connection (K4, K8 ) in the synthesizer for the electronics hobbyist).


    It consists of 3 analog inputs (0-3.3V), as well as data lines and power supply for controlling a second 74HC595.


    This means that potentiometers, switches and control voltages can be queried via two 16-channel analog multiplexers (74HC4067), for example.


    Frontside


    Backside


    Control Circuit with expansion connect ( K4, K8 )


    Greetings. Rolf

  4. #129
    Senior Member Rolfdegen's Avatar
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    Hallo friends..

    Now we are done and we start producing circuit boards in China







    Gruß Rolf

  5. #130
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    Hi,
    Looking very good!
    What will be your business model for this? Can I start ordering a a teensy 4.1 and audio board?
    Thank you
    Daniel

  6. #131
    Senior Member Rolfdegen's Avatar
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    Hi Daniel

    The PCB boards or DIY kit with case can be ordered in future from Tubeohm.com.

    You don't need an audio card. An 16Bit audio converter (PT8211) is fitted on the board.

    Greetings Rolf

  7. #132
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    Hi Rolf, can you tell me when the board will be available?

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