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Type: Posts; User: PaulStoffregen

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    Yup, probably hardware. Since it was still on...

    Yup, probably hardware.

    Since it was still on my workbench, I plugged in a Teensy 3.5 just to make sure.

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    On this test board the MAX7219 runs from VIN (5V). There are only 5 wires...
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    I found that old MAX7219 test board, plugged in a...

    I found that old MAX7219 test board, plugged in a Teensy 4.1, and ran the LCDemo7Segment example.

    It seems to work fine...

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    Which Teensy are you using? (if I were to dig...

    Which Teensy are you using? (if I were to dig out my MAX7219, which one should I test....)
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    In Arduino, click File > Examples > LedControl >...

    In Arduino, click File > Examples > LedControl > LCDemo7Segment
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