So I am in the planning stages of one of my first arduino projects. Basically it will be the heart of a outdoor BBQ / pizza oven area. I need a little help trying to decide what to power this with.
The area will not be used that often, perhaps once a week. When it is used it will need to run for 2-5 hrs max.
I can't really run mains power to the area, so need to rely on battery. Ideally I would also like to set up either solar or wind power to recharge the batteries.
At the moment this is what I need to power (and what I estimate I need to power them, correct me if I am wrong though)
Arduino 30Mah (so F all) 2x thermocouple ????? (but very little I assume) LED strip 6m 8ah led lighting 20ah touch screen 1-2 ah
So all up around about 30ah with everything on max. Obviously everything will not always be running.
I guess the "proper" way to do this would be with a bank of deep cycle batteries? But dear god they are expensive here in NZ.
I had thought of using 18V tool batteries (with converter), I have a bunch. I could charge them as normal, move them outside and cycle back and forth. With the added bonus that if I buy more they are useful as tool batteries when not in use. Is renewable energy going to be possible with 18V though?
Thanks all :)