VControl it from an arduino

[Michael Zacherl]

hm, from what I know to obtain a digital pot with more than 10-bit of resolution is hard.

...

I just checked, that's what Analog Devices and Maxim have on offer:

http://www.analog.com/en/digital-to-analog-converters/digital-potentiometers/products/index.html
http://www.maxim-ic.com/products/digi_pot/

I also think that you're way better off with a (at least) 12-bit DAC, not just money and design-wise.

my 2c, m.  ;-)

On 24.8.2012, at 15:47 , Marc Nostromo [M-.-n] wrote:

> Either DAC or digital potentiometers I guess. I'm not quite sure right now. I need a dac for the audio out of the arduino and the midivox uses SPI so I'll most probably copy that. Maybe then it's better to using I2C so I don't need to mess around switching SPI chip select.
> 
> I'm still very noob so right now I'm trying to undestand basic op-amp / ota / analog filter while I'll breadboard the filter. I find a couple of good texts (most notably the electronotes which are extremely well written). I'm also scavenging through the mutable instruments forum to grab every piece of information I can get :)
> 
> 2012/8/24 Michael Zacherl <mubar04 at blauwurf.at>
> 
> On 24.8.2012, at 15:01 , Marc Nostromo [M-.-n] wrote:
> 
> > Trying to order parts to build a JH Wasp filter and plan to VControl it from an arduino.
> 
> I see my post served it's purpose:
> How are you going to approach to get the CV from the ATmega?
> DAC via SPI or I2C?
> :-) m.
> 
> PS: following my curiosity (which is my nature) doesn't mean I have nothing else to do!  ;-)
> 
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