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Thread: MicroSD Connnection for Teensy 4.0

  1. #1
    Junior Member
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    MicroSD Connnection for Teensy 4.0

    Hi everyone,
    I was just wondering what is the best option for connecting an micro SD to the bottom pads on the Teensy 4.0? Should I solder on a ribbon cable connector and connect the ribbon cable to a small board where I have a micro SD holder, or is there a better option?

    Any advice is great!

    Thanks,
    Noah

  2. #2
    Senior Member PaulStoffregen's Avatar
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    That's how we tested the SD interface, with the breakout boards.

    https://www.pjrc.com/breakout-board-for-teensy-4-0/

    The pads on the bottom of the PCB are designed for a FFC connector, part number HFW8R-1STE1H1LF or HFW8R-1STE1LF.

    HFW8R-1STE1LF was the connector we originally used in the beta test. It went obsolete. But it has been replaced by HFW8R-1STE1H1LF. So far it's not yet in stock at distributors like Digikey and Mouser, but looks like Mouser will be getting them later this year.

  3. #3
    Senior Member+ MichaelMeissner's Avatar
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    Cool

    There are also breakout boards you can have made at a fab like OSH park, that allow you to solder connections and bring out the ports either to normal 0.1" pins or to a micro SD card. Recently there hasn't been much talk about the boards, but if you go back to the November/December time frame in the General Discussion forum, there was a lot of talk. I suspect some of us are waiting for the Teensy 4.1 to be announced and start shipping (the 4.1 will have a Teensy 3.6 form factor with the micro SD card built-in).

    Here are some of the breakout boards discussed:

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