pcgaldo/arduino-tachometer
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Atualizar tachometer_v1.ino

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Pablo César Galdo Regueiro 2024-06-19 16:51:43 +02:00
parent 95e19ffc20
commit 87a06ecc65
1 changed files with 30 additions and 11 deletions
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41
tachometer_v0.ino → tachometer_v1.ino
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@ -39,6 +39,7 @@ unsigned long lastTime = 0; // To store the last time when RPM was calculated
unsigned long currentTime = 0; // To store the current time unsigned long currentTime = 0; // To store the current time
float rpm = 0; // Variable to store the RPM value float rpm = 0; // Variable to store the RPM value
float speed_m_min = 0; // Variable to store the speed in meters per minute float speed_m_min = 0; // Variable to store the speed in meters per minute
float lastSpeed_m_min = -1; // Variable to store the last speed value
// Constants for encoder and roller // Constants for encoder and roller
const int pulsesPerRevolution = 1000; // Pulses per revolution of the encoder const int pulsesPerRevolution = 1000; // Pulses per revolution of the encoder
@ -53,6 +54,14 @@ void setup() {
lcd.init(); lcd.init();
lcd.backlight(); lcd.backlight();
// Display fixed text on the LCD
lcd.setCursor(2, 0);
lcd.print("CONVEYOR SPEED");
lcd.setCursor(5, 1);
lcd.print("CONTROLLER");
lcd.setCursor(5, 2);
lcd.print("VELOCIDADE");
// Set up interrupts for encoder signal changes // Set up interrupts for encoder signal changes
attachInterrupt(digitalPinToInterrupt(ENCODER_CLK), ai0, CHANGE); attachInterrupt(digitalPinToInterrupt(ENCODER_CLK), ai0, CHANGE);
attachInterrupt(digitalPinToInterrupt(ENCODER_DT), ai1, CHANGE); attachInterrupt(digitalPinToInterrupt(ENCODER_DT), ai1, CHANGE);
@ -74,17 +83,17 @@ void loop() {
// Reset counter for the next measurement // Reset counter for the next measurement
counter = 0; counter = 0;
// Display RPM and speed on the LCD // Display speed on the LCD only if it has changed
lcd.clear(); if (speed_m_min != lastSpeed_m_min) {
lcd.setCursor(2, 0); lcd.setCursor(5, 3);
lcd.print("CONVEYOR SPEED"); lcd.print(" "); // Clear previous value
lcd.setCursor(5, 1); lcd.setCursor(5, 3);
lcd.print("CONTROLLER"); lcd.print(speed_m_min);
lcd.setCursor(5, 2); lcd.print(" m/min");
lcd.print("VELOCIDADE");
lcd.setCursor(5, 3); // Update the last speed value
lcd.print(speed_m_min); lastSpeed_m_min = speed_m_min;
lcd.print(" m/min"); }
// Update the last time reference // Update the last time reference
lastTime = currentTime; lastTime = currentTime;
@ -106,3 +115,13 @@ void ai1() {
counter++; counter++;
} }
} }
}
// Interrupt service routine for encoder channel B
void ai1() {
// If both signals are different, the encoder is rotating forward
if (digitalRead(ENCODER_CLK) != digitalRead(ENCODER_DT)) {
counter++;
}
}