If you’re going to develop another Arduino-compatible ... is a buffet of sensors: temperature, humidity, CO, NO2, light intensity, and a microphone for reading sound levels.

He likes to build bare bones Arduino clones rather than sacrifice full dev boards, and instead of programming them via traditional means, he is using his computer’s sound card. He builds a ...

As you type the passcode, the buzzer's tone switches to a continuous but still equally annoying sound ... two Arduino libraries: one for the servo and another for the ultrasonic sensors.