[chbot] stm32f103 blue pill power advise?

[Henri Shustak]

If the input is 3.3V rather than 5V, you could also use a small voltage regulator (buck converter board) just tap this from the 5V output. I can draw a picture if my explanation is not crystal clear.

Henri

> On 24/12/2018, at 12:28 PM, Volker Kuhlmann <list57 at top.geek.nz> wrote:
> 
> On Mon 24 Dec 2018 11:14:29 NZDT +1300, Mark Atherton wrote:
> 
>> All good, but the original posting asked for no modifications be done
>> to the PCB.
>> 
>> Can't see how this might be done if you mess with USB anything...
> 
> Make an inline USB adapter, microUSB male/female, containing a schottky
> diode. Feed 5V externally as it is. Hang everyone connecting USB
> directly...
> 
> Are there short micro USB extension cables? Slice into that, cut the 5V
> cable and insert a schottky. Rigid adapters plugged into devices are a
> dicey mechanical proposition.
> 
> As Andrew astutely observed, all goes on 3.3V so schottky drops
> shouldn't be relevant.
> 
> Volker
> 
> -- 
> Volker Kuhlmann
> http://volker.top.geek.nz/	Please do not CC list postings to me.
> 
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