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Above 12 volts, the regulators might overheat, and below 7 volts, might not suffice. The board can be powered by 5-20 volts but the manufacturer recommends to keep it between 7-12 volts. The barrel jack is usually connected to a wall adapter. Barrel Jack – The Barrel jack, or DC Power Jack can be used to power your Arduino board.There are 3 ways to power the Arduino Uno: “ Pinout of ARDUINO Board and ATMega328PU” by pighixxx is licensed under Creative Commons Attribution-Share Alike 4.0 International Arduino Uno pinout – Power Supply

Start Your Arduino Circuit Arduino Uno Pinout – Diagram In this post, we’ll go over the capabilities of the Arduino Uno pinout. The versatility of the pinout provides many different options such as driving motors, LEDs, reading sensors and more. The Arduino Uno pinout consists of 14 digital pins, 6 analog inputs, a power jack, USB connection and ICSP header. Arduino Uno is based on the ATmega328 by Atmel. In this post, we’ll be taking a closer look at the Arduino hardware, and more specifically, the Arduino Uno pinout. We saw that Arduino boards are programmed using a language derived from C and C++ in Arduino’s Integrated Development Environment (IDE) and learned a few basic debugging methods. In our last two posts, we focused on the software aspects of the Arduino.