Power up Arduino boards through USB Port is not the only option, In this article we discussed about the four different ways to power an Arduino board.

Powering an Arduino has a little magic to it. It wasn’t obvious to me when I first started working with them, but Arduinos have on-board regulation. Taking advantage of this allows for longer power ...

The Arduino supply voltage is not always guaranteed to be exactly 5V and will depend on the supply source (USB, batteries, other). Since the analog value depends on the supply voltage, calculating an ...

Yes, two AA batteries at 1.5v each would equal only 3 volts when connected in series. The Arduino needs 5v so [AI] decided to use a MAX756 DC-to-DC step-up regulator to maintain a steady stream of 5v.

How to make an Arduino Voltmeter As you may well know, Arduino’s analog inputs can be used to measure DC voltage between 0 and 5V (when using the standard 5V analog reference voltage) and this range ...

The Arduino only regulates the 7+ volt input to 5v, if its run off USB then there is good current available for things. In the case of some of the cheap multiport chargers and desktop PCs often too ...