polykit,
@polykit@chaos.social avatar

Next project is coming along. It's a wave table oscillator using #PIO from the #RaspberryPiPico and an 8-bit R-2R DAC. Idea is to morph between tables and have all sorts of CV inputs to change parameters. Currently I'm trying to get DMA for the ADC working to save some CPU cycles. This will end up in a module for my #Kosmo modular :fairydust:
#synthesizer #synth #synthdiy @synthdiy

Raspberry Pi Pico on a bread board with an 8-bit R-2R ladder DAC. There is a multi meter attached showing a frequency of 1.67kHz.

polykit,
@polykit@chaos.social avatar

@synthdiy here is a first demo of the wave table oscillator. Basics of the software are working. I'm using a CV from an LFO two control the morphing between two wave tables.
Youtube: https://www.youtube.com/watch?v=HdRYExAH9uc

polykit,
@polykit@chaos.social avatar

@synthdiy ah, this really bugs me. I couldn’t get fixed point multiplication working for the morphing. I guess it’s some type casting issue I couldn’t tackle. I’m now using the second core of the Pico for floating point operations. Problem is that the oscillator is not getting to higher frequencies when there is too much going on.

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