gistfile1.txt

#define UDP_BROADCAST_PORT 3444

UDP Udp;
IPAddress broadcastAddress(255,255,255,255);
uint8_t txBuffer[256];
char c;

void setup() {
    
    Udp.setBuffer(1024);
    Udp.begin(UDP_BROADCAST_PORT);
    
    
    txBuffer[0] = 'H';
    txBuffer[1] = 'e';
    txBuffer[2] = 'l';
    txBuffer[3] = 'l';
    txBuffer[4] = 'o';
    txBuffer[5] = NULL;
    Udp.sendPacket(txBuffer, 5, broadcastAddress, UDP_BROADCAST_PORT);
}

void loop() {
    
    unsigned int now = millis();
    
    txBuffer[0] = c++;
    txBuffer[1] = NULL;
    Udp.sendPacket(txBuffer, 1, broadcastAddress, UDP_BROADCAST_PORT);
    delay(10);
}