Electronic – A USB SD card reader on your own PCB

pcbsdusb

I'm actively looking for a solution about this since nearly 2 months: I need to build a USB SD card reader slot for my project www.samplerbox.org.

I tried various solutions:

  • buy some cheap USB SD reader on ebay and dismantle them : I tried at least with 3 of them : unfortunately, the chip is always under a black glue (epoxy?) and it's impossible to see which chip is used.

Moreover I don't see how I could attach an existing SD reader to my own PCB

  • Use a ready-to-use SD module (SPI interface) like this one:

But as discussed in another topic, this works with SPI, and thus, this is not suited for my case, because transfer rate would be far too slow with SPI (~ 1 MB/sec)

So none of these solutions have worked.

How would you provide a SD card slot to your device, on you own PCB, with high transfer rate (thus using USB instead of SPI)?

Best Answer

Why do you have to add a custom chip on your PCB instead of using a ready-made USB card reader? I would just use a small USB module like RTS5159 inside your box: enter image description here

You can get those for 0.95€ a piece, probably even cheaper if you need a lot of them.

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