User manual

The source text for this project differs from the previous experiment mostly in the
following functions:
void findSSID()
{
esp8266.println("AT+CWLAP");
if (esp8266.findUntil(ToFindSSID,"OK")) alarm();
else debug("SSID not found!");
}
void alarm()
{
debug("alarm!");
digitalWrite(LED_ALARM, HIGH);
for (int i; i <=30; i++)
{
tone(PIEZO, 400, 500);
delay(500);
tone(PIEZO, 800, 500);
delay(500);
}
digitalWrite(LED_ALARM, LOW);
}
The function findSSID() is called about every 30 seconds in the loop-routine and