That works fine (for me). I have a 3.3v supply connected to pins 1&9
and I can use either that supply or the USB to power the tmote.
It doesn't seem to matter if both are connected at the same time.

MS

Jose Araujo wrote:
Dear all,

I wanted to have na external vcc to supply my tmote sky but the tmote datasheet is not conclusive about it. Does anyone implemented already? I was thinking about connecting the 3V supply to the pin 1 and 9 of the external 16 pin connector i.e. AVCC and Gnd, with a L from ExternalVCC to AVCC, as its seen in the battery supply schematic (Vccin with C1, L2 and C2 turned into DVCC)

Thanks to all,

José


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--
Platform: WinXP/Cygwin
TinyOS version: 1.x, Boomerang
Programmer: MIB510
Device(s): Mica2, MicaZ, Tmote
Sensor board: homebrew

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