Schematic diagram of the process of brainwaves signal extraction and transmission. (IMAGE) Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS ...

An Arduino is by no means expensive, but that still doesn't mean that it suits your needs right out of the box. If you want to make your own custom board, Make shows you how in a three-part series.

I used an LCD shield to display the current temperature and speed of the fan, but you can use the circuit without the LCD display. You also need to select the transistor by the type of fan that you ...