PreenFM > preenfm2 and preenfm3

preenFM is going to Eurorack

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lokki:
yep, maybe. so basically we just need to scale the 0-10v control voltage to 0-3.3v and you open the ports and add support for the analog input in the matrix?

this would be super awesome! scaling the cv should not be hard.

Xavier:
Yes, I've never dug the idea but that's how i see it.
You must add a protection to be sure the voltage never exceed 3.3V or it will damage the MCU.

Xavier

lokki:
yep. so i will try to come up with something and post the schematic. i will use it with 0-5v signals, but the general principle will be the same.

lokki:
xavier, how high would the samplerate of the adc with your firmware approximately be? could we also theoretically input audio-rate signals?

cheers

Xavier:

The Matrix is updated every 32 samples.
No need to read the ADC more often.

Xavier

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