[sdiy] Pseudo Random Noise Generator in an AVR?

[dan snazelle]

search the SDIY archives!

someone posted some working code on here a couple years ago for a simple psuedo random/white noise gens for arduino





On Jan 9, 2013, at 11:39 AM, Tom Wiltshire wrote:

> I've done it on a PIC, but never an AVR. The code's online if you want to save some coding.
> 
> http://www.electricdruid.net/index.php?page=projects.noisegen
> 
> Alternatively, send me your address, and I'll pop you a chip in the post.
> 
> HTH,
> Tom.
> 
> 
> On 9 Jan 2013, at 05:10, Jim Patchell <patchell at cox.net> wrote:
> 
>> I am trying to elimnate parts in my current project.  I have every thing on the board, except the analog noise generator (you know, reversed biased e-b junction.  Gaining enough realestate may not be possible, and I don't want to add any more square inches.  So, I was thinking, why not move the noise generator into the ATmega that is also on the board.  Making a 32 bit linear feedback shift register in the firmware should not be a problem.  Running it fast enough might be  I would want to run it at a minimum of 40K shifts per second.  Not even sure if that is fast enough.
>> 
>> Anybody else every try something like this, and how did it work. Otherwise, I am going to have to break out the old STK500/501 and write some code. ;^)
>> 
>> -Jim
>> 
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