Thanks, Micheal. Yes, the documentation was harder to write than the
code -- or at least it seemed that way. ;)
I'd be interested in your experiences if and when you get a chance to
try the firmware. Note that I don't see the "Blue Pill" development
boards at Digi-Key. The code should run on other evaluation kits such as
the ST's Nucleo-F103RB, although possibly requiring some changes to the
port assignments, etc.
Likewise if you develop your own platform, but note that although ST's
chips will generally run without problem on their own internal clocks, I
believe that an external crystal is required for accuracy if using USB.
Also that Digi-Key's price for just the MCU itself is US$5.53 in single
unit quantities as compared to approx. $1.50 including the crystal,
connectors, LEDs, passives, board, assembly, etc. for "Blue Pill"s
direct from Chinese suppliers, or about 3x that with fast shipping from
Amazon.
As to whether the Chinese products use genuine ST chips vs clones or
manufacturing rejects, that's a different question. I've never had any
problems with them, but I certainly wouldn't use them in safety-critical
applications or run them to the limits of their rated temperature range.
On 11/12/20 12:31 AM, Michael Stapelberg wrote:
Thanks for sharing this!
I’ll make sure to order an STM32F103 or two with my next Digi-Key order.
I also appreciate the extensive documentation you included :)
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