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yeah those things are nice, didn't use the F3xx series so far but
the F4xx series, both have an M4 core.<br>
This means:<br>
Mostly single cycle FPU instructions and single cycle conversion
between float and int, stuff like MAC for integer.<br>
So whoever unfamiliar with these MCUs read that and thought "kinda
pentium 1 with 70 MHz" kind of power, I think that would be off,
as the P1 had a lot more to chew on those instructions :-)<br>
The F4 series can run at 168 MHz (or some can 180 MHz I think)<br>
<br>
There is quite cheap (~ 20..30 EUR) "discovery" boards as they
call it with the STM32F4xx (and also F3xx), the one has a 16bit
stereo DAC with audio amp (STM32F407 discovery), another has 8MB
SDRAM + 320x240 TFT display (STM32F429 discovery, seems
unavailable right now) <br>
which some people on YT have done DSPy stuff with.<br>
Like here:<br>
<a class="moz-txt-link-freetext" href="https://www.youtube.com/watch?v=yDBXfkS3y7w">https://www.youtube.com/watch?v=yDBXfkS3y7w</a><br>
<br>
ST also has cheap "nucleo" boards with these (the nucleo are more
bare bones usually IIRC)<br>
<br>
At RS-online (german branch), the "Nucleo Board for STM32F303
Series" costs 10,14 EUR + tax.<br>
<br>
The discovery and nucleo boards have an ST-Link V2 debugger on
board - i.e. plug in USB port, install some lite version of an
IDE, and you can program and debug (single step instructions, see
variable values etc) for nothing more than those few bucks.<br>
<br>
- Steve<br>
<br>
<br>
Am 12.02.2016 um 07:43 schrieb Loscha:<br>
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<div>Markus Fuller just uploaded another of his great
series of teardown videos.<br>
<br>
</div>
Today's victim was the Waldorf Streichfett<br>
<a moz-do-not-send="true"
href="https://www.youtube.com/watch?v=umXnCuVBwf0">https://www.youtube.com/watch?v=umXnCuVBwf0</a><br>
<br>
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The entire synthesizer string machine is a single ARM
STM32F303 chip.<br>
</div>
There is a power supply chip, an op amp for the audio outs,
crystal, but the only computational device is the ARM<br>
<br>
<a moz-do-not-send="true"
href="http://www.st.com/web/en/catalog/mmc/FM141/SC1169/SS1576/LN1531">http://www.st.com/web/en/catalog/mmc/FM141/SC1169/SS1576/LN1531</a><br>
<br>
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Notable for Audio considerations is that the DACs are 12 bit.
Given the amount of beloved instruments that use 12 bit DACs,
and the quality of this machine, it hardly seems a limitation.<br>
<br>
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/Edward<br>
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