This is the most famous development board based on Atmega328P microcontroller. It can be used for several DIY projects ranging from simple to complex
The Arduino Uno R3 with Cable is a microcontroller board based on the ATmega328
ARDUINO UNO R3 – ORIGINAL MADE IN ITALY
Arduino Uno Rev3 — Arduino Official Store
Arduino UNO R3 (With Logo) – RoboticsDNA
Arduino Uno R3 ATmega328P Arduino Compatible - DIP (without cable) – QuartzComponents
Arduino UNO R3 Atmega328P compatible board
Arduino Uno R3 Complete Guide For Beginners - Vayuyaan
What is an UNO R3 (Arduino Compatible) Board?
UNO R3 Compatible Board (CH340) + 1 USB Cable (Made in CHINA)
Elegoo UNO R3 Ultimate Starter Kit, 1 set - 3DJake Switzerland