What is Arduino Uno?

Arduino Uno is an open source microcontroller board based on the ATmega328P. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs. a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header and a reset button.

Difference between Arduino Uno and Arduino Leonardo

Arduino Uno vs. Mega vs. Micro: Main Differences - NextPCB

File:ArduinoUno.svg - Wikimedia Commons

Arduino Uno - Wikipedia

No 5V+ from Arduino Uno R3 - Motors, Mechanics, Power and CNC - Arduino Forum

What is Arduino UNO?, Arduino Uno Pinout & Program

A guide to Arduino PCB - KnowHow

The Arduino UNO R4 WiFi combines the processing power and exciting new peripherals of the RA4M1 microcontroller from Renesas with the wireless

Arduino® UNO R4 WiFi

Arduino Uno - R3 - DEV-11021 - SparkFun Electronics

Arduino UNO R4 WiFi, ABX00087

Arduino UNO R4 Minima Overview & Getting Started Guide