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1  Using Arduino / Audio / Re: MSGEQ7 7 band filter on: December 17, 2012, 11:49:40 am
Well, turns out it's not worth the cost of sending them all back. (I actually had 5 lots of 20, not a single working unit from ~30 tested; all gave either no output or random noise dropping to zero upon input) Lesson learned I guess! Disposed of them and using a second 328 to do FFT instead - actually gives me a lot more channels, so I guess it's a good thing!  smiley
2  Using Arduino / Audio / Re: MSGEQ7 reading constant values on: December 17, 2012, 07:27:19 am
Did you get this working? I recently bought a lot of these from Ebay, and none appear to work. Mine give inconsistent output - some are constantly zero, some fluctuate at low values. I'm currently trying to get a refund from the seller, but if you have a source for working units that'd be handy! I'm in the UK.
3  Using Arduino / Audio / MSGEQ7 7 band filter on: December 16, 2012, 01:38:02 pm
I bought 20 of these chips from Ebay, and turns out they're all duff/dead. Can anyone recommend a good source for these please? The ebay price was pretty cheap (80p each, turns out there was a reason for that!) I'm in the UK. Not going to name and shame the seller as I'm waiting to see if I can get a refund/replacement batch.

Alternatively, anyone know of another chip that does the same, maybe with more bands?

(I've used FFT before on the Arduino, but for the project I'm working on I want to free up the CPU time a bit more, so want to use the hardware filtering.)

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