Rotary Encoder RPM?

alex 2018-06-12 03:58:40 1736 Views2 Replies
Hello, I have purchased the Incremental Photoelectric Rotary Encoder - 400P/R (SKU:SEN0230)

Do you have sample code for Arduino to find out the RPM of how fast the Encoder is spinning?

Thanks in advance!

2018-06-15 04:57:43 Hi, thank you for the reply. I did see that already and it looks like it just increments depending on the direction the encoder spins. Here is my current solution to detect how fast it is spinning:

Code: Select all

volatile unsigned int flag_A = 0;
unsigned long previousMillis = 0;
const long interval = 50;

void setup() {
  pinMode(A_PHASE, INPUT);
  Serial.begin(9600);
  attachInterrupt(digitalPinToInterrupt( A_PHASE), interrupt, RISING);
}

void loop() {
   
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= interval) {
      previousMillis = currentMillis;
      Serial.print(flag_A);
      flag_A = 0; 
  }
}

void interrupt(){
  flag_A += 1;
}

alex

2018-06-13 10:11:15 There is a code to count the cylinder number of the encoder in the wiki https://www.dfrobot.com/wiki/index.php/ ... U:_SEN0230 robert.chen