[sdiy] micro front end?

[Julien Delgoulet]

I'm into the AVR too recently making a double/quad lfo and VC ADSR.
For your front analog input have a look at what Alain Coupel did for the electric druid LFO : http://www.acxsynth.com/edruidlfo/edruidlfofr.htm

PS : I don't know which avr you are using but I would go for another DAC (yours is 8 bits resolution only ,will use plenty of pins and needs a Vref )like the microchip MCP4822 (which has 2 12 bits dac into an 8 pins package with an internal vref !! ;-) - use SPI tought).

Le 8 mars 2011 à 18:39, dan snazelle a écrit :

> over the last few weeks i am having more and more luck understanding AVR's
> 
> after  all this time spent looking at peoples programs, at books, and messing around with code, I am now ready to actually start trying to commit something.
> 
> however, my current setup for INPUT AND OUTPUT is low-fi at best.
> 
> So i just got some TLC7524 DACs in the mail so I can try and make a usable output
> 
> and now i have to figure out what sort of opamp front end to put before the built in ADC's
> 
> 
> SO...does anyone have any advice, links or comments on the best way to get synth levels down to the 5v input limit?
> 
> thanks!
> 
> 
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