![]() ![]() ![]() Feel free to keep playing with the piezo buzzer before building your piano. now built-in tone () command in Wiring and Arduino. but we still need to return a value, so return 0. There are lots of fun examples online of using Arduino + piezo buzzers to play lo-fi versions of popular theme songs (like the Imperial March from Star Wars). // A fun sketch to demonstrate the use of the tone () function written by Brett Hagman. Return(0) // We looked through everything and didn't find it, Return(frequencies) // Yes! Return the frequency You can only play one tone at any given time. Due to the use of integer variables and the rounding in division, the duration of musical notes will be rounded down. You will not be able to do much else with the Arduino, while the tune is playing. for (i = 0 i < numNotes i++) // Step through the notes A couple of notes: This code uses the delay function and is blocking. we find it, we'll return the frequency for that note. int beats = // Now we'll search through the letters in the array, and if Don't forget that the rests (spaces) need a length as well. A "1" represents a quarter-note, 2 a half-note, etc. A space represents a rest (no tone) char notes = "cdfda ag cdfdg gf " // a space represents a rest // Beats is an array of values for each note and rest. change these values to make different songs! // Length must equal the total number of notes and spaces const int songLength = 18 // Notes is an array of text characters corresponding to the notes The obvious answer should be - write a sketch that samples sound and converts for the tone lib. ![]() Const int buzzerPin = 9 // We'll set up an array with the notes we want to play Silent Night Connect a piezo buzzer or speaker to pin 11 or select a new pin. ![]()
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