[f4aii]

I need that! :-)

the code is simple but I can not integrate it for lack of knowledge in programming

I reconstructed here my measure of the water level of the well currently in place and I added on the display the simulation of the height of snow that I prepare.
 
We have the distance between the SRF05 sensor and the well water in cm and the filling level in%.
For height of snow, simply remove the distance to the ground with the measure

Code:

//HC RS04 Ultrasonic ranging module int triggerPort = 2; int echoPort = 3; #include <Wire.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x3A,20,4); void setup() { lcd.begin();                                   lcd.clear();   Serial.begin(9600); pinMode( triggerPort, OUTPUT ); pinMode( echoPort, INPUT ); } void loop() { digitalWrite(triggerPort, LOW); // set to LOW trigger's output digitalWrite(triggerPort, HIGH); // send a 10us pulse to the trigger delayMicroseconds( 10 ); digitalWrite(triggerPort, LOW); long duration = pulseIn(echoPort, HIGH); long r = 3.4 * duration / 2; // here we calculate the distance using duration float distance = r / 100.00; float pourcent = duration; float snow = 20 - distance ; //20 is distance in cm with ground lcd.setCursor(0, 0); lcd.print("time: "); lcd.print(duration); lcd.print("ms  "); lcd.setCursor(0, 1); lcd.print("distance: "); if( duration > 38000 ) lcd.print("out of reach"); // if duration in greather than 38ms, the obstacle is out of reach else { lcd.print(distance); lcd.print("cm");} pourcent = map(duration, 1000, 10500, 100, 0); lcd.setCursor(0, 2); lcd.print("level:"); lcd.print(pourcent); lcd.print(" %  "); lcd.setCursor(0, 3); lcd.print("height:"); lcd.print(snow); lcd.print("cm  "); delay( 1000 ); // wait for 1s }