Homeyduino - no sensor values

Hello there

I’ve made a project to measure the water niveau in my rain well. I’m using an arduino but I can’t get the niveau of the water in my homey. Here is my code:

#include <SPI.h>
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <Homey.h>

#define echoPin D7 // Echo Pin
#define trigPin D6 // Trigger Pin

const char* ssid = *******;
const char* password = ************;
const char* name = "Waterput";
long duration, distance; // Duration used to calculate distance
int water = 0;
unsigned long previousMillis = 0;

void setup()

Serial.println("Starting ethernet..."); //If this is the last message you see appear in the serial monitor...
WiFi.begin(ssid, password);

Serial.print("IP address: ");

Serial.begin (9600);

pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);


void loop()

unsigned long currentMillis = millis();

if (currentMillis-previousMillis >= 1000) { //Code in this if statement is run once every second
  previousMillis = currentMillis;

  /* The following trigPin/echoPin cycle is used to determine the
  distance of the nearest object by bouncing soundwaves off of it. */
  digitalWrite(trigPin, LOW);
  digitalWrite(trigPin, HIGH);
  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);
  //Calculate the distance (in mm) based on the speed of sound.
  distance = duration * 0.34/2;
  water = (1650 - distance) * 3.03;


void updateSensor() {
  Homey.setCapabilityValue("niveau", water);

Thanks in advance


Cool project! I think you need to use one of the standard capabilities, see Homey Developer Tools if you have the app store version of Homeyduino, so you cannot use nivaeu.

If you want to use custom capabilities you have to add them to app.json and CLI install GitHub - athombv/com.athom.homeyduino: Homeyduino is an Homey app which allows you to easily connect your own Arduino projects to homey.

Good luck!

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Thank you, it works now!

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