HW-179 8-Digit 7-Segment LED Display (MAX7219 Driver)

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  1. - 14th February 2024, 06:16 #2
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    Default Re: HW-179 8-Digit 7-Segment LED Display (MAX7219 Driver)

    Hi Chuck,

    Awesome work! Have you figured out how many MAX7219 we can daisy-chain?

    I saw posts elsewhere mentioning a "capacitance limitation" with SPI, and that bit-banging permitted more drivers in a chain (or vice-versa).

    I'm chaining 10 drivers with total wire length under 7-8 inches.

    Name: Max7219 chain.png Views: 2252 Size: 18.1 KB


    EDIT: These guys got me thinking.

    https://forum.arduino.cc/t/max7219-s...ngth/250346/14


    I can just as easily use 2 chains of 5 drivers. I've got the pins.
    Last edited by Demon; - 14th February 2024 at 07:16.
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