Make the project, you will need the items below:
1. Kuamn Arduino Uno board*1
2. Kuman Buzzer*1
3. Kuman Human body detection sensor*1
4. Dupont cables
How to wire?
Buzzer:
Negative electrode（-）---------- GND
positive electrode（+）----------- VCC（5V、Connection development board Digital pin 8）
Human body detection sensor:
GND -------------------- GND
VCC -------------------- 5V
OUT ------------------- Connection development board Digital pin 2
General View:
Code:
int ledPin = 13;
int fengming = 8;
int sensor = 2;
int val = 0;
int i=0;
void delay1ms(void) //devintion -0.25us
{
unsigned char a,b;
for(b=190;b>0;b--)
for(a=2;a>0;a--);
}
void setup()
{
Serial.begin(9600);
pinMode(ledPin, OUTPUT); // set as output number pin
pinMode(sensor, INPUT); // set as input number pin
pinMode(fengming, OUTPUT); // set as output number pin
}
void loop()
{
for(i = 0; i <= 100; i++)
{
if(i==100)
{
i=0;
}
else
{ val = digitalRead(sensor); // read input pin
if(HIGH == val)
{
digitalWrite(ledPin,HIGH); // set LED high level
digitalWrite(fengming,HIGH); // set buzzer as high level
delay1ms();
}
else
{
digitalWrite(ledPin,LOW); // set LED high level
digitalWrite(fengming,LOW); // set buzzer as high level
delay1ms();
}
}
}
}