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    Multiple M020 USB modules stacked?

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    • C
      cyberluke
      last edited by

      Hi, can you use multiple M020 USB modules with M5Stack Fire? It uses SPI interface.

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      • felmueF
        felmue
        last edited by felmue

        Hello @cyberluke

        not without hardware modification, I think. While SPI uses some signals (SCK, MISO, MOSI) in parallel for all SPI slaves, there is one signal for each SPI slave so it can be selected. In other words if you stack multiple M020 USB modules (w/o hardware modification) all of them would share the same select signal and therefore react at the same time (which is not what you want.)

        Thanks
        Felix

        GPIO translation table M5Stack / M5Core2
        Information about various M5Stack products.
        Code examples

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