sd card breakout thread

[native walrus]

@rustic thorn

what is it that you are making that has such a tiny form factor? It was some spinning thing? Or maybe I am mixing it up with someone else's project.

[rustic thorn]

I think someone else's project you have in mind.

It's a sort of miniature car (or perhaps a ball - not yet decided on it) that will play sounds

I want to make it as small as possible

[native walrus]

so it would have to have a tiny speaker too, which will not be very loud

[rustic thorn]

yep got a tiny speaker already

[native walrus]

so much smaller than a ping-pong ball. A ping-pong ball would have room for an SD card

no sounds, but did you see this latest project of reactive juggling balls? https://learn.adafruit.com/wireless-juggling-balls-esp-now

[rustic thorn]

ah didn't see that one yet - will have a look

Yes smaller than a pingpong ball

[rustic thorn]

@native walrus I managed to get the sdio connection to work with the sd card reader now

[native walrus]

Great! 🎉

[rustic thorn]

• Was a bit of a pain with those thin wires but doable.

• Circuitpython is not able to do SDIO, correct? So I will most likely need to stay with SPI for the microprocessor communication.

• But I guess I could perhaps create some pads for programming or have a jig to transfer the files on the chip first and then put the chip on the PCB later.

Just thinking if I need to make 100 pcs or so

file transfer takes only a few seconds compared to 10 minutes now

[native walrus]

we support SDIO on various chips, but not currently RP2xxx

I am confused as to why you wired up so many of the pins. I thought you just need two extra.

You could design a breakout like ours, but with extra pins. Ours does level shifting which you probably don't need.