Pancake Vibration Motor
Vibrates quickly when powered. Usually used as a simple tactile signal. Operates at 5V.
Active Buzzer
About
Active buzzers have a oscillating source built into them, so a simple DC voltage will activate the buzzer. Though simple to use, the downside of the active buzzer is that the tone of the buzzer is fixed at a particular frequency and the loudness is more or less fixed. These are mainly useful for signaling or an alarm.
Starter Code
int buzzerPin = 4;
void setup() {
pinMode(buzzerPin, OUTPUT); // initialize digital pin 4 as an output
}
void loop() {
digitalWrite(buzzerPin, HIGH); // turn the buzzer on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(buzzerPin, LOW); // turn the buzzer off by making the voltage LOW
delay(1000); // wait for a second
}
Resources
https://www.instructables.com/ACTIVE-BUZZER-WITH-ARDUINO-UNO-R3/
