You can have situations when you need 3.3V on your shield for a SD/MMC card or other peripherals... You can have the regulator on shield but is better (and cheaper) to have it on motherboard.
I think is enough for power connector. On Aug 28, 11:00 pm, Richard <[email protected]> wrote: > Hello Seb, > > > > Do you mean selection between 5V and 3.3V or add 3.3V ? > > > I mean add 3.3V, so you can use part with that voltage easily (original > > Arduino takes 5V and 3.3V from FTDI chip). I don't know what option is the > > best, maybe Vasile's suggestion about a "3.3V LDO as BA033 from Rohm" is > > nice. I'll let you decide ;) > > 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 ? > 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. > > > > > My mistake, I measured wrong... > > How is that possible, in paris you have the exact Meter in Bureau > International des Poids et Mesures in Parijs thus so close to your > home :-). > > > > > OK I had a look but I have few time right now so I'll check deeply later, > > but it looks very nice. I'm afraid I won't be able to build a new one this > > WE, no laser printer, and, worst, no more copper board... > > No problem, lets wait until we are totally satisfied with the board so > no changes needing anymore. > > I then will finish BOM and making a new shield base > > > > > Thanks for this ! > > You’re welcome, and thanks for the fast feedback. > > Greetz > > Richard --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/jallib?hl=en -~----------~----~----~----~------~----~------~--~---
