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    How the Magic Ventilator works ...

    How the Magic Ventilator works

    http://magicventilator.com/wp-content/uploads/2020/07/Main-Diagram_3-1024x593.jpg


    Here are the basic parts I used:

    AC powered Air mattress inflator (120v or...
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    You also tried building your own ventilator? How...

    You also tried building your own ventilator? How well it went for you?

    Yeah that's true I first tried building my own flow sensor with using a thin copper wire as a hot wire but it was taking too...
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    Thanks! :) There was many phases. I first...

    Thanks! :)


    There was many phases. I first tried using a motor and a Bag valve mask like some open source ventilators out there but it didn't seem reliable. Then I bought a few air mattress...
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    Thanks! @defragster

    Thanks! @defragster
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    Ventialtor for Covid-19 with the Teensy 4.1

    Dear forum members,

    I built a mechanical ventilator powered by Teensy 4.1 for Covid-19 :cool:

    http://magicventilator.com/wp-content/uploads/2020/07/IMG_2650_4.jpg

    Youtube video:
    ...
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    Teensy 4.1 unknown pin/pads question?

    20920
    What is the pad near the ground? Is it 2 ground pins next to each other?

    What about the 5 pads near the SD-Card? Are they the SD-Card signals access?
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    Teensy 4.1 Fast PWM Library?

    Dear forum members,

    Is there any library for fast PWM for the Teensy 4.1? :confused:

    For Arduino I used https://github.com/micooke/PWM

    Will using:


    analogWriteFrequency(7, 20000000);
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    Thanks for your reply. Where in the manual you...

    Thanks for your reply. Where in the manual you saw it?
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    20858 Zoom in: 20859 This is the analog...

    20858

    Zoom in:
    20859
    This is the analog input of the flow rate.
    It seems like that 1ms sampling rate will be enough to get a really good reading of the signal. So I guess even 30KΩ resistor...
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    Thanks! Why 900 and 2K would be better?

    Thanks!

    Why 900 and 2K would be better?
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    Thanks Mark and everyone else replying! :o ...

    Thanks Mark and everyone else replying! :o

    What will be the best way to covert a 0-5v analog signal to 0-3.3v signal for the Teensy 4.1? To use a resistor divider (lets say 10K and a 20KΩ...
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    Teensy 4.1 5v pin tolerance question

    Dear forum members,

    I'm new to the Teensy board and I just bought the Teensy 4.1 and I tried to Google what is the Teensy 4.1 5v tolerance but so far I could not find a clear answer :confused:
    On...
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