The fan runs at 24V, so he’s sharing that with the Arduino through a 7805. ... An Arduino mini is responsible for driving the display, but as you might already know, ...

The Jisulife Handheld Mini Fan is a popular, portable and rechargeable fan available on Amazon. The fan offers two power speeds and a long-lasting battery life of up to 19 hours. It is currently ...

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 ...

Annachiara Barretto-Grignoli reviews the Jisulife Handheld Mini-Fan, which she and her mom brought on vacation to Italy in the summer. The $14 fan doubles as a portable charger and flashlight, and ...

One editor tested out Amazon's best-selling handheld fan and called the tool a "summertime essential." Read her full review of the cool gadget with photos.