HI,
I am trying to build a SMS sender(via websire) for backup to a pager for a rescue team. It works too well !
example: pager has a relay in charging base which closes a switch for 5 secs when pager goes off. It is connected to the arduino digital pin. Ethernet shield then visits a URL (GET REQUEST)
Problem is its too sensitive and the arduino sometimes sends a message by itself. I think I have it debounced correctly.
I was hoping to test for the switch closed, then pause for 2 seconds then test again if it is still closed before sending the message.
Could somebody help me with that. It would be much appreciated.
Here is what I have working. - but too sensitive. (Using a 1k pull down resistor)
#include <Ethernet.h>
byte mac[] = { 55E, 05, 055E, 055F, 55FE, 55D };
byte ip[] = { 15, 555, 555, 555 };
byte gateway[] = { 555, 555, 5, 555 };
byte subnet[] = { 555, 55, 555,555 };
byte server[] = { 555, 555, 555, 555 }; // These changed for security reasons
Client client(server, 80);
void setup()
{
pinMode(4, INPUT);
Ethernet.begin(mac, ip, gateway, subnet);
Serial.begin(9600);
delay(1000);
Serial.println("initialized!");
}
int f = 0;
int prevactivation = 0;
long time = 0;
#define DEBOUNCE 60000
void loop()
{
f = digitalRead(4);
if( (prevactivation == 0) && (f == 1) && (millis() - time > DEBOUNCE) ) {
time = millis();
sendUpdate();
}
prevactivation = f;
}
/// Functions ////
void sendUpdate()
{
Serial.print("connecting... ");
if (client.connect()) {
Serial.println("connected");
client.println("GET /~tothephpscript.php?pass='password'");
client.println();
Serial.println("message sent!");
client.stop();
} else {
Serial.println("connection failed");
}
}
void fetchUpdate()
{
if (client.available()) {
char c = client.read();
Serial.print(c);
}
while(!client.connected()) {
client.stop();
}
}
