- Tue Apr 07, 2009 2:57 pm
#70203
I'm hoping to start a project that will consist of a 802.15.4 star network with the hub powered by USB and the end devices running off of LiPoly batteries. Rather than do the typical 802.15.4 thing where nodes sleep for a long time and only transmit bursts once and a while, my application will have the end nodes communicating fairly constantly (100Hz or so?) for at least an hour or two, hopefully longer.
I'd like to come up with an estimate for battery lifetime of the end nodes. Is this as simple as taking all my components, adding up their current draw, and dividing the battery's rating (eg, 1000 mAh) by this number to find the number of hours I can run on a full charge? Or is the process more complex than this?
I have a lot of experience working with micros, but have never done anything with batteries or wireless before, so any advice would be helpful.
Thanks!
I'd like to come up with an estimate for battery lifetime of the end nodes. Is this as simple as taking all my components, adding up their current draw, and dividing the battery's rating (eg, 1000 mAh) by this number to find the number of hours I can run on a full charge? Or is the process more complex than this?
I have a lot of experience working with micros, but have never done anything with batteries or wireless before, so any advice would be helpful.
Thanks!