On Aug 29, 10:28 am, Sebastien Lelong <[email protected]>
wrote:
> Hi Richard,
>
> Creating the 3.3V is no problem but should it only go to the spare pin
>
> > on the power connector or also go to the 18F4550 so selectable 5V or
> > 3.3V power on the 18f4550 ?
>
> Yes, let's put 3.3V on the spare pin of power connector (I think it's where
> it was originally designed to). As for powering 18F4550, I guess 5V is
> enough. I have a LF version which can go far lower than 3.3V, but it's
> another topic and quite advanced feature.
>
>
>
> > Or maybe all the 5V on the main board (after the fuse) selectable
> > between 5V and 3.3V and only let 5V go to the serial connector.
>
> Is it complicated to do this ? Does it worth it ? Can it be postpone on a
it is not complicated to do.
> next version without much changes if it becomes very important ? And maybe
> some serial connectors can use 3.3V. too I guess there are many options we
It is no problem to make al the 5V selectable between 5 and 3,3V and
to keep the serial connector at 5V all the time.
> can't cover. For now, we can stay on 3.3V on spare pin, for shields, and let
> the PIC be powered with 5V
>
OK i will change this in a few days
Greetz
Richard
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