Autonomous wind meter with GSM module - Battery-Solar?

Hi to all!

This is my first post here, and I'm also new on using Arduino. Been reading lot's of posts and I must say this is a great forum.

Here is my idea, I want to measure wind speed and direction and send it to my Web server (internet address) to make it feel real-time. (I can send it every minute or so... not sure what'd be better considering power consumption).

To achieve this, I have already identified these modules to use.

The problem I'm having is to determine if this can work on battery + solar charger and if this is possible what would be the best battery, solar and charger to use. I read that the GSM shield can take up to 1000mA...Also I'm not sure how much does the weather station can take, but I guess its almost zero compared to the GSM Shield.

Any help on how to power up this or configuration would be great!

Thanks for your help! :)

-- Felipe

ok, found this post that helps me a bit,

but still not sure if that is the best configuration lr if I shoudl use LiPo + a LiPo solar charger

still any help would be great to figure out the best configuration. I am also thinking on turning on the gsm module once every 5minutes or so, and sending data for a 30 seconds.

thanks again!


Ok, found a good explanation on Sparkfun web ;)

I will use a 20ah battery with a solar panel. Will investigate what's better and post it here.


-- Felipe

From my experiments we have moved from car-deep cycle batteries (~20mA continously) it run for 10 months.
We now use a 6Ah LiPo battery and some heavely modified arduino boards. One extreme case is to put the units under ground for three years and do a measurement every day, report it and then go back to sleep.

LiPo batteries should not be charged in minus degrees Celcius as they freeze and when charging release pure Lithium inside of them, which might turn into a fire hazard. They are ok to charge in plus degrees.

For a starter project that is not intended to be mass-produced I would recommend the car-battery approach. They are expensive and big, but easy to get started with.