Using an Arduino and a near silent PWM computer fan to create a nice breeze in your house. Compared to a normal A/C fan this barely uses up any power and at low speeds is silent.

Source code: (Arduino IDE)
https://pastebin.com/6dA4BjUx

PWM Fan Standard:
http://www.formfactors.org/developer/...

Noctua Fan I used:
http://noctua.at/en/products/fan/nf-a...