Proiectul va avea un senzor de temperatura, care depisteaza prezenta unei pisici infometate. Daca pisica e in apropiere atunci bobitele vor cadea, iar daca cumva pisica doreste sa manance si mai mult, acest dozator are un timer, care tine cont ca in urmatoarele 6 ore nu va mai lasa bobitele sa cada. Atunci cand este permisa caderea bobitelor, un led va semnala asta.
Pe partea de software, am modificat ca rezultatul sa fie folosibil si pentru oameni (avand temperatura mai mica) si timer-ul de 10 secunde ceea ce mi a permis sa testez complet functionalitatile: https://imgur.com/5bBw9a7
Dar nu va faceti griji, l-am testat si pe motan: https://imgur.com/TdlrvU9
Pin configuration const int temperaturePin = A0; Analog input pin for temperature sensor const int servoPin = 12; Digital pin for servo control Temperature threshold const float temperatureThreshold = 32.1; Celsius Servo parameters const int servoRotationAngle = 90; Angle to rotate the servo const int servoInitialAngle = 0; Initial angle of the servo const unsigned long servoDelay = 3000; Delay in milliseconds for servo to stay at the rotated position const unsigned long servoRestDelay = 10000; Delay in milliseconds for servo to rest at position 0
Servo servo; volatile bool isServoRotated = false; volatile bool isResting = false;
void setup() {
pinMode(temperaturePin, INPUT); servo.attach(servoPin); Serial.begin(9600);
// Set up Timer2 cli(); TCCR2A = 0; // Clear control register A TCCR2B = 0; // Clear control register B TCNT2 = 0; // Set initial value of the timer counter OCR2A = 156; // Set compare match value (1 Hz) TCCR2A |= (1 << WGM21); // Turn on CTC mode TCCR2B |= (1 << CS22) | (1 << CS21) | (1 << CS20); // Set prescaler to 1024 TIMSK2 |= (1 << OCIE2A); // Enable timer compare interrupt sei();
}
float readTemperature() {
int rawValue = analogRead(temperaturePin); // Convert the raw value to temperature in Celsius float temperature = ((float)rawValue / 1023.0) * 5.0; // Convert the analog value to voltage temperature = (temperature - 0.5) * 100.0 / 2.95; // Convert voltage to Celsius return temperature;
}
ISR(TIMER2_COMPA_vect) {
static unsigned long previousTime = 0; unsigned long currentTime = millis(); unsigned long elapsedTime = currentTime - previousTime;
// Read temperature
float temperature = readTemperature();
Serial.println(temperature);
// Check if temperature is above threshold and servo is not currently rotating or resting
if (temperature > temperatureThreshold && !isServoRotated && !isResting) {
servo.write(servoRotationAngle); // Rotate the servo
isServoRotated = true;
previousTime = currentTime;
}
// Check if the servo has reached the delay duration
if (isServoRotated && elapsedTime >= servoDelay) {
servo.write(servoInitialAngle); // Move the servo back to position 0
isServoRotated = false;
isResting = true;
previousTime = currentTime;
}
// Check if the resting duration has passed
if (isResting && elapsedTime >= servoRestDelay) {
isResting = false;
previousTime = currentTime;
}
}