I don't think the code is the problem, but I can post it. Works perfectly set to 5 minutes, powerd from my usb port it works as expected for 1 hour. But it never makes it a full hour, even on fresh batteries.
here is the code anyway.
#include <avr/sleep.h>
/*
* NightLight
* This is a night light for gabe that will automatically turn off after one hour
*/
int MAX_SECONDS = 3600;
int countSeconds = 0;
/*
* pins 0 and 1 are not used... but available for debugging, pin 2 is the wake pin
*/
int wakePin = 2;
int lowLEDPin = 3;
int highLEDPin = 14;
void setup() {
for(int i=lowLEDPin;i<=highLEDPin;i++) {
pinMode(i, OUTPUT); // sets the digital pins as output
}
goHigh(); //turn them all on
pinMode(wakePin, INPUT); //set wake pin to input
//Serial.begin(9600);
//Serial.print("Turning on");
}
void loop() {
goHigh();
delay(1000);
countSeconds++;
//Serial.print("seconds is ");
//Serial.println(countSeconds);
if(countSeconds>=MAX_SECONDS) {
goLow();
sleepNow();
}
}
void wakeUpNow() {
goHigh();
countSeconds=0;
}
void sleepNow() {
//Serial.println("Sleeping");
set_sleep_mode(SLEEP_MODE_PWR_DOWN);
sleep_enable();
attachInterrupt(0,wakeUpNow, LOW);
sleep_mode();
sleep_disable();
detachInterrupt(0);
}
void goLow() {
//Serial.println("Turning off LEDs");
for(int i=lowLEDPin;i<=highLEDPin;i++) {
digitalWrite(i, LOW); // sets the LED on
}
}
void goHigh() {
//Serial.println("Turning on LEDs");
for(int i=lowLEDPin;i<=highLEDPin;i++) {
digitalWrite(i, HIGH); // sets the LED on
}
}