[sdiy] ATSamD4 Breakout Board

[Eric Brombaugh]

Yeah, the project discussed on the MI forum is using my F030 breakout 
with an F031 mounted - the author contacted me about that one a while 
back. They're pin-compatible and the F031 has a few extra goodies for 
not much more money.

The F3xx parts with the Cortex M4F core are my current favorite MCUs in 
the whole world :) They're *specifically* designed for analog processing 
and the ADCs & DACs on them are much nicer than those on other STM32s 
because they're quieter (less noisy). They've got a full hardware 
floating point unit that does all the basic functions plus sqrt() really 
fast so they're good for high speed, high resolution processing.

The F373 has on-chip 16-bit sigma-delta ADCs that run up to 50kHz, work 
fine for audio and costs less than $5 if you shop carefully. I've got a 
Euro-rack module designed around that one which uses the on-chip 12-bit 
DACs to test feasibility of a one-chip audio DSP solution. It works fine 
but the 12-bit output might be limiting in some situations. I've got 
many of the effects algorithms from prior synth projects running on that.

http://ebrombaugh.studionebula.com/synth/f373_mod/index.html

There's a new F302 part out that costs less than $4 in quantity and has 
enough on-chip resources for some fairly complex processing. Worth a 
look if you're into that sort of thing.

Eric

On 11/09/2015 02:17 PM, Mikko Helin wrote:
> Also the Ebay boards have the STM32F030 chip which doesn't have I2S
> support. However, you could get some STM32F031F6 chips from Mouser or
> Farnell and replace the one on the board with it.  There's already one
> FM synth project for the 031 (guess they are using the board Eric
> designed, at least the page has a link to it):
>
> http://mutable-instruments.net/forum/discussion/7472/custom-fm-synth-with-stm32f031/p1
>
> STM32F373 is another one about the same level as Teensy 3.x are. Example
> here:
> http://ebrombaugh.studionebula.com/embedded/stm32f373breakout/index.html