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Topic: more ram (Read 595 times) previous topic - next topic

tr909

Sep 07, 2008, 09:40 am Last Edit: Sep 07, 2008, 09:55 am by tr909 Reason: 1
Hello,

What are my options (if any) if I need to add more ram?

I'm sampling some incoming data (8 bit values) and run out of space very quickly.

I've considered the Sanguino but even 4k would likely be too little. I would imagine I'd need 10-16k.

Thanks for all advice!


MikMo

People have interfaced both USB memory sticks and SD cards to Arduino. This might be your solution, depending on how fast you need to sample and store data.

The obvious and simple solution wold be to send data over serial to a PC, but i assume that you need a stand alone device ?

tr909

Quote
People have interfaced both USB memory sticks and SD cards to Arduino. This might be your solution, depending on how fast you need to sample and store data.

The obvious and simple solution wold be to send data over serial to a PC, but i assume that you need a stand alone device ?


Thanks for the reply.

Yes, it is a stand-alone device.

I've considered usb memory sticks or sd. I'm not sure how fast those can write.

I'm sampling audio data at 8000 times a second. Not sure if those could keep up? Also, I'd be afraid I would soon reach the re-write limit (they are similiar too eeprom in that they can only be overwrote a certain number or times?)

I suppose I should learn to program dsp chips instead of trying to make the arduino do these tasks!

weirdo557

hmm, sampling audio data with the arduino, it was my understanding that the arduino was too slow to be of any use with audio other than volume levels.

tr909

Quote
hmm, sampling audio data with the arduino, it was my understanding that the arduino was too slow to be of any use with audio other than volume levels.


I had been told that too but luckily it works very well. I'm only doing doing 8bit 8k but it sounds decent.


weirdo557

really, if you have time, post some more details, im interested.

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