On 28 aug, 11:49, Sebastien Lelong <[email protected]> wrote: > Hi guys, hi Richard, > > Since last try to build Jaluino v1.0 > (http://jallib.blogspot.com/2009/08/building-jaluino-v10.html), I've been > thinking a lot about what could be improved and added. Here's a list of > point I think it can be nice to have, though I understand not all may be > doable in a homebrew version. Anyway they will be here as a reminder... > > - I²C: current version isn't I²C enabled. That would be really great to > have this. There are different options I can think, depending on how the PCB > can get complex: > > 1. Two resistors, with jumpers to select whether you want to i2c enabled > or not, and a connector (see Joep > suggestion:http://groups.google.com/group/jallib/msg/2042aeffaba02b33?hl=en). > SDA/SCL > are exposed through shield connectors.
> > 2. Two resistors, with jumpers to select whether you want to i2c enabled > or not. No connector, SDA/SCL still usable via connectors. > > 3. Two resistors. Either you solder them, either not, whether you want > I2C or not (but switching master/slave will be a pain...) > > 4. Last option, two resistors to solder or not, and the i2c connector. > > - Being able to use 3.3V power source. I know it adds another part and use > lots of precious space, but it might possible since there are some space at > the bottom. Should 3.3V be produced by jack power, USB or serial source, or > just jack and USB ? Do you mean selection between 5V and 3.3V or add 3.3V ? > > - last point, and the most important IMO, increase the space between upper > and bottom shield connectors. Using your measurement file, this is "16 pitch > 40.64 mm" (note I measure ~40.18mm, am I wrong ?). Yes, it should be 40.64, maybe your printer did not print exactly 1:1 or a small slip off the drill :-) > I think it's way too > narrow, because you can't even put a mini-breadboard between them. As you > said in a previous mail, if we want to have this intermediate shield, > distance has to be different from Arduino (or the shield will be hard to > create). What do you think about a distance a little bit bigger than > Arduino. For Arduino, I measure ~49mm, what about something like 55mm ? > Power connector on the left can remain uncentered IMO. Thank you :-) > > I wish I could help with the PCB, like moving these connectors, but I don't > have Orcad and don't know how to use it (I may give a try with the demo don’t worry it is already finished. 1 distance is now 55,88mm (22 pitch) 2 add i2c plus connector like Joeps idea but without the Vin I hope you are not to attached to the via’s (wire bridges), because I managed to remove one, so only 2 left ;-). 3.3V will be added as soon as i know wat you want with it,. you can find the files in de file section, please check so i can change together with adding 3.3V power option (hopefully without to many via’s) 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 -~----------~----~----~----~------~----~------~--~---
