Velleman VMA436, User Manual, Page: 4 / 6

VMA436
V. 02 – 21/01/2019 4 ©Velleman nv
8. Example
Connection.
IN4======pin 4
IN5======pin 5
//2 relays connected to
int IN4 = 4;
int IN5 = 5;
#define ON 0
#define OFF 1
void setup()
{
relay_init();//initialize the relay
}
void loop() {
relay_SetStatus(ON, OFF);//turn on RELAY_1
delay(2000);//delay 2s
relay_SetStatus(OFF, ON);//turn on RELAY_2
delay(2000);//delay 2s
}
void relay_init(void)//initialize the relay
{
//set all the relays OUTPUT
pinMode(IN4, OUTPUT);
pinMode(IN5, OUTPUT);
relay_SetStatus(OFF,OFF);//turn off all the relay
}
//set the status of relays
void relay_SetStatus( unsigned char status_1, unsigned char status_2)
{
digitalWrite(IN4, status_1);
digitalWrite(IN5, status_2);
}