用Tinkercad学arduino之 多喇叭发声
/* Multiple tone player Plays multiple tones on multiple pins in sequence circuit: * 3 8-ohm speaker on digital pins 6, 7, and 8 created 8 March 2010 by Tom Igoe based on a snippet from Greg Borenstein This example code is in the public domain. http://www.arduino.cc/en/Tutorial/Tone4 */ int pos = 0; void setup() { pinMode(8, OUTPUT); pinMode(6, OUTPUT); pinMode(7, OUTPUT); } void loop() { // turn off tone function for pin 8: noTone(8); // play a note on pin 6 for 200 ms: tone(6, 880, 200); // play tone 69 (A5 = 880 Hz) delay(200); // Wait for 200 millisecond(s) // turn off tone function for pin 6: noTone(6); // play a note on pin 7 for 500 ms: tone(7, 988, 500); // play tone 71 (B5 = 988 Hz) delay(500); // Wait for 500 millisecond(s) // turn off tone function for pin 7: noTone(7); // play a note on pin 8 for 300 ms: tone(8, 1047, 300); // play tone 72 (C6 = 1047 Hz) delay(300); // Wait for 300 millisecond(s) }