Stackable Coke bottle windmill (VAWT) for bottle dynamo
by Ktronik, published
Real Quick and simple to make, VAWT for charging of AA batterys and USB stuff.
Print out STL and recycle or drink 6 / 2lt coke bottles, cut each in half leaving the screw neck intact. Load into coke bottles into holder and press fit onto a 6V 3W bottle dynamo, this one is made to fit a bottle dynamo I allready had.
stack them on top of each other to get the power needed, for a given wind speed.
With load matching circuits we could boost the output to around 5w.
could also make big stack, and finish with another bottle dynamo on the other end, I will make a endstop version of the block so you can have big stacks and 2 bottle dynamos. ~ 10w boosted
you could probley go down to your local bike shop, and get find a few that they have not tossed out. I did and got a crate full!! for the sake of some plastic, your 3D printer, and a few recycled bottles you can charge you AA batterys and USB stuff with the circuits I have. Electronics would be less than $5 to buy parts for a AA charger and USB charger.
I will make a hub dynamo version soon, and add the 'base' to hold common dynamos, for being driven from the coke bottle VAWT
NOT PRINT TESTED