Hi, first of all I have the Arduino Uno sleeping without the XBee or the shield. The power reduction however, is only about 1/4 (went from 40mA to 30mA). I then tried it with XBee and the XBee shield installed (series 2 btw), but the thing never powers down (or XBee wakes it up instantly)
My first question is how do I deal with XBee preventing the Arudino going into low power mode
I need to drastically reduce how much the XBee consumes to prolong battery life.
My application requires me to wake up the Arduino periodically every 15 minutes and communicate briefly with a continuously powered server
How about putting the arduino processor to standy/power down mode to use as little power as possible? If I was to put the chip into power down mode would I need to use external circuitory to wake it up or is there some way I can run something like a 15 minute timer on the processor with no external circuitry required to automatically power up the device? What would I need to do to also make XBee power down/up in sync with the Arduino processor?