Now that you have your materials ready, it's time to familiarize yourself with how to use them. Let's start with the UNO board. You'll typically only work with a few of its main parts: the USB ...

The display featured no onboard controller, and the original driver wasn’t easily repurposed. Instead, [Ivan] decided to drive it directly from an Arduino Uno. This is easier said than done.

Once you know how to use Arduino boards, you can make custom shortcut keys for your computer, change your thermostat, or even control a walking robot. But to do that, you need to start simple, and ...

Or a wall wart, Adafruit #63. Some jumper wires. These go between the Ard's sockets and your breadboard, and/or between various breadboard lines. You can get solid core #22 wire and strip the ends.

This Arduino-based Pomodoro timer project also uses this 25-minute cycle. Once you push the button to start the timer, it will run for 25 minutes, display a count-up timer and a "Study time!" ...