Difference between revisions of "LinkNode Buzzer Module"
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Latest revision as of 02:22, 13 December 2016
Introduction
The Buzzer module has a piezo buzzer as the main component. It can be connected to an analog pulse-width modulation output to generate various tones and effects.
Wiring & Running
The module is connected to the base shield J1:
Buzzer Signal --> LinkNode D1 G0
Power on and download the simple code, we can hear a ticking sound coming from the buzzer.
Simple Code
const int beep_pin = 0; void setup() { // put your setup code here, to run once: pinMode(beep_pin,OUTPUT); } void loop() { // put your main code here, to run repeatedly: unsigned int hz = 1800; unsigned int time_ms = 800; buzzer(hz,time_ms); delay(1500); } void buzzer (int hz,int time) { if(hz <= 500) { for(int i = 0; i < (time/(1000/hz)); i ++) { digitalWrite(beep_pin,HIGH); delay(500/hz); digitalWrite(beep_pin,LOW); delay(500/hz); } } else { for(int i = 0; i < ((time*1000)/(1000000/hz)); i ++) { digitalWrite(beep_pin,HIGH); delayMicroseconds(500000/hz); digitalWrite(beep_pin,LOW); delayMicroseconds(500000/hz); } } }