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    SD extension via CONN_SD design questions

    Third-party add-ons
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    • Zhang Jianyuundefined
      Zhang Jianyu
      last edited by

      Hello all,

      I want to make a SD card extension to plug into CONN_SD on Duet 2 wifi/eth, basically just extending the SPI signals 150-200mm to an SD socket.

      I don't have much electronics design experience, so I have a couple basic questions if anybody knows:

      1. Would any passive components be recommended at the SD socket when extending in this way?

      2. Related to the Duet, would running a PanelDue via the 4-wire cable, and a separate SD extension (rather than using PanelDue SD slot) cause any trouble?

      Here is a picture of what I have in mind: Imagine a cable connecting this to CONN_SD. (no SD card holder model is in KiCad so it only shows the pads and connector).
      9c44abfa-5328-490d-bb28-b831fcebbe1e-image.png

      Any guidance is appreciated. Thanks!

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      • Zhang Jianyuundefined
        Zhang Jianyu
        last edited by

        Also, here is the schematic i have made (pardon the sideways power ports):
        c32e1843-6e5a-4b23-946d-d8d8ba3da4a4-image.png

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