It would be cool to build an electronic tone generator system yourself. Described here is a small tone generator based on pulse-width modulation (PWM) concept in which a piezo buzzer generates ...

The Processing GUI sends a character, depending on which button you press, through serial to the Arduino program. 'F' for Fur Elise and 'J' for Jingle bells. The "songs", if we can call them that, are ...

// divided by the note type. //e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.

[Eric Wasatonic] had a box of SWB2433 transistors that he had very little information about. In order to discover their properties, he fired up his curve tracer to compare these transistors with more ...

“I don’t understand, you don’t have the technology.” OK, so it’s not actually a futuristic tool with the same capabilities as the one off the hit TV series Dr. Who, but this homemade “sonic ...