Arduino Uno R3 Development Board — ATmega328P, No Wi-Fi Required

There is a reason nearly every electronics tutorial on the planet starts with this exact board. The Arduino Uno R3 is not the newest or the most powerful controller on our shelf, it is the most proven. Millions of makers have learned to blink their first LED, read their first sensor, and drive their first motor on hardware just like this.

What makes it special is what it does not have: no Wi-Fi radio, no wireless stack to configure, no network settings to fight with. Just a rock-solid ATmega328P microcontroller, straightforward digital and analog pins, and the single largest tutorial and library ecosystem in hobby electronics. If you can imagine a project, someone has almost certainly already documented how to build it on an Uno.

• ATmega328P, 16MHz, the same chip powering countless real-world projects
• 14 digital I/O pins (6 with PWM), 6 analog inputs
• Classic USB-B connector for programming
• The deepest tutorial, forum, and library support of any board we carry

Reach for this one when a project does not need to talk to the internet, it just needs to work, reliably, the first time and every time after.