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    How about three parallel 10k pullups to +4.096 V?...

    How about three parallel 10k pullups to +4.096 V?
    That implies less than 0.25 ma into each of two I2C pins (probably much less due to the diode drop).

    This is a Teensy 4.0, and I need to power...
  2. Broken on Mac: both Teensyduino and Arduino + Teensy

    This is a MacBook Pro running macOS High Sierra (10.13.6). The specific version is important.

    I'm using the Download page https://www.pjrc.com/teensy/td_download.html

    Download from the link...
  3. My mistake. The link labeled "Macintosh OS...

    My mistake.

    The link labeled "Macintosh OS Software (10.10 - 10.15)" downloads an Arduino IDE that does know about Teensy boards (as well as the usual Arduino boards). So I have not reported a...
  4. I rebooted the laptop. No change. I...

    I rebooted the laptop. No change.

    I re-installed the Arduino IDE; works with my Mega 2560.

    I installed teensyduino from the link labeled "Macintosh OS Software (10.10 - 10.15)". LINK ERROR:...
  5. Arduino IDE crashes after installing teensyduino

    This is a Macbook Pro running macOS High Sierra (10.13.6). Arduino IDE is 1.8.12.
    Before installing Teensyduino, the Arduino IDE worked fine with my Arduino Mega 2560.

    I then installed...
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