Hi Richard,
I can't guess which is the most used, which make more sens: 1. 3.3V/5V selection for board and shield, or 2. 5V on board and 3.3V shield with voltage adjustments... If we follow Arduino design, I think (but I'm not sure it is the same on all *duino flavors) it corresponds to just 3.3V on spare pin, that is option 2. > > OK, I'll try to find one of these. > > I've ordered more copper clad boards & more stuff on eBay, I hope to receive > > them this week so I can build this upcoming board next WE. > > Lets hope the next one will be the final one for Jaluino Medium > homebrew Don't worry for me about building many boards, I expected this, and this is a mandatory and very important step. (and I need to see it for real to figure out what should be modified, etc...) Cheers, Seb -- Sébastien Lelong http://www.sirloon.net http://sirbot.org 2009/8/31 Richard <[email protected]> > > Hello Seb, > > > > > > Ok, I will only add 3.3V to spare pin of the power connector, but am > > > afraid i will at least need to add 1 via and maybe more :-(. > > > > Do you mean it would be simpler if you put 3.3V selection and all the > > whistles about 3.3V ?... :) > > > > Well, it is quit simple to make +5V selectable between 3.3V and 5V > because the traces don’t need to be changed so except for serial > connector (this better stay on 5V) all +5V when selected on 3.3V will > become 3.3V so on power connector that +5V will also become 3.3V > (spare stays unconnected). > > above is easier but if you want the main board on 5V and need only > 3.3V for the shield (and off course dealing with the voltage level > adjustments on the shield) this would be impossible. > > But every time when you need 3.3V on a shield you also want to power > your main board with 3.3V so that you don’t have to deal with voltage > level adjustments, well than it is the easiest way. > > In my opinion is 3.3V on the spare pin of the power connector AND 5V > selectable between 3.3V and 5V the most flexible option (but off > course also the most impact on the pcb) > > > > > OK, I'll try to find one of these. > > I've ordered more copper clad boards & more stuff on eBay, I hope to > receive > > them this week so I can build this upcoming board next WE. > > Lets hope the next one will be the final one for Jaluino Medium > homebrew > > > > > Cheers, > > Seb > > > > 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 -~----------~----~----~----~------~----~------~--~---
