I might like to use Jeenodes in an outdoor wireless sensor network.
My requirement however is that the remote sensor nodes must be low power to save batteries (the main receiver will be ok). Am I correct in the assumption that because they are based on the atmel328p I can use the avr sleep and interrupt methods to save power? The jeenode spec says 12mA consumption with radio off - this would be too high, but I think I can put the avr to sleep and use the WDT as a clock to then interrupt sleep, switch on the radio send data then go back to sleep. I've done this successfully with atmel328p and got less than 7uA in sleep by setting fuses appropriately also.
I just wonder if I can achieve this with jeenodes?
cheers
The radio only draws 0.3 microamps when in standby mode if the brownout detector (0.5 microamp) and wake-up timer (1.5 microamp) are turned off. The crystal oscillator can draw as much as 1.2 microamps. There is supposed to be a low-power mode controlled by the PLL Setting Command but the datasheet doesn't cover that bit in the command!
Hi John thanks for that,
That's extra info that's very useful. I think I'll go ahead now and get some. I'll post progress, especially if I get into trouble 
I also joined this forum and got some useful stuff.
http://forum.jeelabs.net/forum
Cheers
Edit: I didn't immediately think to look at the Radio datasheet separately, but I found links and, as you said, it gives me the features I need.
http://www.sunrom.com/files/RFM12B.pdf and http://www.hoperf.com/upload/rf/RF12B.pdf
..features
Wakeup timer
• 2.2V – 3.8V power supply
• Low power consumption
• Standby current less than 0.3uA
0.3uA is low enough for me!