1) What's your estimate of the (approx) max power draw that is safe when external Ben Dongle leeches power from Ben?
2) Given recently discovered lower than optimal power to Ben from external charger during Ben operation (not an issue when Ben is powered down) what do you estimate to be a steady state allowable dongle power draw that will not cause battery to discharge? Assume Ben is plugged into a USB charger, has an external dongle connected to UBbb, and is operating 24x7. p.s. I hope you appreciate my suggested OLD ubb = "universal breakout board" NEW UBbb = "Universal Ben breakout board." --- Ron K. Jeffries On Sun, Feb 6, 2011 at 13:40, Werner Almesberger <[email protected]> wrote: > Ron K. Jeffries wrote: >> I think the so-called UART card >> for Ben Nanonote is (prepare yourself) >> a bridge too far. > > Maybe. Depends on the use case. E.g., if you were thinking of hooking > something up to the Ben's TX/RX pads and just didn't like the idea of > running some cables deep on the inside of the machine, then the UART > board as presently designed should be perfect for you. (No hw flow > control either, same voltage levels, doesn't add much bulk.) > >> My current preference would be to >> use the UBbb(universal Ben Breakout Board) > > I definitely hope UBB will be popular as a general low-overhead > extension mechanism. > >> It might also sprout a few LEDs which help greatly when trying to >> speak serial to a device that you have not seen before. > > FWIW, the current UART board has a LED :-) > >> In my world, it would be ok/fine for this larger and more >> capable serial board to have it's own power from >> one or two AA batteries. > > Oh, you can draw a bit of power from the Ben, no problem. > > - Werner > > _______________________________________________ > Qi Hardware Discussion List > Mail to list (members only): [email protected] > Subscribe or Unsubscribe: > http://lists.en.qi-hardware.com/mailman/listinfo/discussion > _______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
