[Trent M. Wyatt]’s CPUVolt library provides a fast way to measure voltage using no external components, and no I/O pin. It only applies to certain microcontrollers, but he provides example Ar… ...

FM Radio Alarm Clock This radio alarm clock was built over a couple of weeks with the use of an Arduino UNO R3, LCD1602, and various electronic components. This project allows the user to change the ...

Adding an 8-segment LED bar graph display. CLIVE “MAX” MAXFIELD Remember that we are powering our breadboard using an Arduino Uno R3 (Components Part 3). We concluded our previous column by powering ...

Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — either via Bluetooth or Wi-Fi.

8 LEDs connected to Arduino pins from 0 to 7. Once it started it will turn on one led at a time in increasing sequence and then in a decreasing sequence. The code for Arduino can be found in the src ...