Stage | idel Power |
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Initial | 0.121W |
w/o 78M05 | 0.096W |
w/o diods and LED | 0.072W |
use sleep_cpu() | 0.002W |
Blinking Led
Code Block |
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Low Power Blinking LED Example
Code Block |
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#include <avr/wdt.h>
#include <avr/sleep.h>
#include <avr/interrupt.h>
#define adc_disable() (ADCSRA &= ~(1<<ADEN)) // disable ADC (before power-off)
#define adc_enable() (ADCSRA |= (1<<ADEN)) // re-enable ADC
void setup()
{
// Power Saving setup
for (byte i = 0; i < 6; i++) {
pinMode(i, INPUT); // Set all ports as INPUT to save energy
digitalWrite (i, LOW); // Might help if ther is some sensors on pins? No impact in this demo
}
adc_disable(); // Disable Analog-to-Digital Converter
wdt_reset(); // Watchdog reset
wdt_enable(WDTO_1S); // Watchdog enable Options: 15MS, 30MS, 60MS, 120MS, 250MS, 500MS, 1S, 2S, 4S, 8S
WDTCR |= _BV(WDIE); // Interrupts watchdog enable
sei(); // enable interrupts
set_sleep_mode(SLEEP_MODE_PWR_DOWN); // Sleep Mode: max
}
void loop()
{
//Set the LED pins to HIGH. This gives power to the LED and turns it on
pinMode(0, OUTPUT);
pinMode(1, OUTPUT);
digitalWrite(0, HIGH);
digitalWrite(1, HIGH);
sleep_enable();
sleep_cpu();
//Set the LED pins to LOW. This turns it off
pinMode(0, OUTPUT);
pinMode(1, OUTPUT);
digitalWrite(0, LOW);
digitalWrite(1, LOW);
//Wait for a second
sleep_enable();
sleep_cpu();
}
ISR (WDT_vect) {
WDTCR |= _BV(WDIE); // разрешаем прерывания по ватчдогу. Иначе будет реcет.
} |
Source: https://alexgyver.ru/pump-sleep/
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Source: http://www.gammon.com.au/power