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MicroSD card breakout board & Arduino Pro Mini 3.3V 8 MHz

by buton on Fri May 25, 2012 8:13 am

i had problems reading the breakout board from the Arduino pro mini...

how ever it works with an arduino UNO..

is the breakout board compatible with the MINI?
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Re: MicroSD card breakout board & Arduino Pro Mini 3.3V 8 MHz

by adafruit_support_bill on Fri May 25, 2012 8:42 am

It is compatible with 3.3v logic. We have not tested it specifically with the Pro Mini.
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Re: MicroSD card breakout board & Arduino Pro Mini 3.3V 8 MHz

by buton on Fri May 25, 2012 9:32 am

Maybe it could be a timing issue because of the 8 mhz clock?
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Re: MicroSD card breakout board & Arduino Pro Mini 3.3V 8 MHz

by adafruit_support_bill on Fri May 25, 2012 9:51 am

I have heard of issues with accessing SD cards on 8MHz variants. We don't carry any of them, so I don't have any firsthand experience with it.
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Re: MicroSD card breakout board & Arduino Pro Mini 3.3V 8 MHz

by buton on Fri May 25, 2012 10:06 am

if i power the breakout module with external 5 volt.. the arduino pro mini will read and recognize the SD card...
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Re: MicroSD card breakout board & Arduino Pro Mini 3.3V 8 MHz

by adafruit_support_bill on Fri May 25, 2012 10:12 am

Yes. The on-board 3.3v regulator needs >3.3v to properly regulate.
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Re: MicroSD card breakout board & Arduino Pro Mini 3.3V 8 MHz

by buton on Fri Jun 01, 2012 9:44 am

i got it to work...

Thanks
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