Arduino cores provide tone() function to emit a PWM signal, and it is often used to play beeps on a buzzer. Modulating the PWM frequency, you can play sounds at a given frequency, i.e., you can play a ...

The problematic WWVB radio receiver inside an atomic clock is removed and replaced with an ESP8266 Module and an Arduino sketch which synchronize the clock using the Network Time Protocol. Although ...

Paul and David Bradt’s Ardiono Projects offers multiple ways to use Arduino and Raspberry Pi microcontrollers for your model railroading projects. Buy the book here. Code for Button/Blink Test (SN095) ...