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Thread: PIN compatability Atmega328 -> Teensy++ -> Teensy 3.2

  1. #1
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    PIN compatability Atmega328 -> Teensy++ -> Teensy 3.2

    Hi all!

    Im trying to use the Arduino tvout library to output composite video from a Teensy,

    https://playground.arduino.cc/Main/TVout

    the problem is that it looks like the only "teensy" compatible board with the library is the teensy++ according to the tvout library documentation.

    The problem I have is that I need to connect the OC1A and AIN1 pins (from atmega328 and teens+++), but its getting very difficult to know which pins are compatible version on the teensy 3.2.

    So far I found in a webpage that the pin 3 of the teensy 3.2 is the OC1A... but I'm lost on the AIN1... maybe even the pin 3 on my teensy is wrong.

    Any suggestions for my experiments/investigations?

  2. #2
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    asking this in another way would be:

    what are the compatible PB5 and PF7 pins from teensy++ on the teensy3.2?

  3. #3
    Senior Member+ defragster's Avatar
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    You can get some of that from teensy/schematic.html

    Both devices are shown there.

  4. #4
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    Checked that and pins PB5, PF7, OC1A and AIN1 appear for teensy++2.0 but not for 3.2... I think Im missing something here, its posible those pins are named different on 3.2?

  5. #5
    Senior Member+ defragster's Avatar
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    Yeah - I saw that - the architecture is different so accessing the pins will be different.

  6. #6
    Senior Member PaulStoffregen's Avatar
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    Maybe this can help?

    https://github.com/qix67/uVGA

  7. #7
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    Quote Originally Posted by PaulStoffregen View Post
    Maybe this can help?

    https://github.com/qix67/uVGA
    thats very nice! but for VGA not composite... anyway thanks for ref to the repo, since I didn't know it exists.

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