Water flow sensor question
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hi everyone. we have the FS400A G1 flow sensor, and been working with the lopy4, but we are very confused about how to implementate the RPM function. i hope some answer in mycropython to be used on a lopy4. thank's
from time import sleep import machine rmt = machine.RMT(channel=3) rmt.init(gpio="P4", rx_idle_threshold=16000) lt = 0 while True: data = rmt.pulses_get(timeout = 5000) print(data) print()And arduino code
// Fórmula: f(Hz) = K * Q(L/min) // Sensor de ¼”: S // Sensor de ½”: 7,5 // Sensor de ¾”: 5,5 // Sensor de 1″: 4,8 volatile int CantPulsos; //Variable que acumula los pulsos recibidos int LxM; //Variable que acumula el calculo de Litros por Minuto int pinsensor = 2; //Numero de pin donde conectamos el sensor float FacConv = 4.8; //Factor de Conversion para calcular caudal void rpm () { //Función que se ejecuta durante la interrupción CantPulsos++; //Incrementa el contador de pulsos } void setup() { pinMode(pinsensor, INPUT); //inicializa el pin digital 2 como entrada Serial.begin(9600); //inicializa el puerto serie attachInterrupt(0, rpm, RISING); //(Interrupcion 0(Pin2),funcion rpm,Flanco de subida, cuando pasa de LOW a HIGH) } void loop () { CantPulsos = 0; //Pone en 0 el contador de pulsos sei(); //Habilitamos las interrupciones, equivalente a sei(); delay (1000); //Esperamos un segundo cli(); //Deshabilitamos las interrupciones, equivalente a cli(); LxM = (CantPulsos / FacConv); //Calcula los Litros por Minuto Serial.print (LxM, DEC); //Imprime la cantidad de litros por minuto Serial.print (" L/min\r\n"); //Imprime "L/min" y salta a una nueva linea } -
I provided a general solution to pulse counting in the following post:
https://forum.pycom.io/topic/6006/water-flow-sensor-looking-for-advice/2?_=1632413513467At some point I may provide a micropython library for this.
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