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 ? - 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 ?). 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. 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 version if it's not too limited). Cheers, Seb -- Sébastien Lelong http://www.sirloon.net http://sirbot.org --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
