how to read the percentages from soil moisture V1.2

Other Hardware Sensors
1

how to read the percentages from soil moisture ??? I have capacitive soil moisture v1.2 and i have connected to 3.3v … and the code ist :

void getSoilMoist(void)
{
int i = 0;
soilMoist = 0;
for (i = 0; i < 10; i++) //
{
soilMoist += analogRead(SOIL_MOIST_1_PIN);
delay(20);
}
soilMoist = soilMoist / (i);
soilMoist = map(soilMoist, 1023, 0, 0, 100);

Blynk.virtualWrite(V4, soilMoist);
The values are 99% always inside and out the pot of the plant …
whyyyyy? What i make wrong ???
Somebody can help me ???

2

Exactly what type of sensor is it ?
Can you provide a link to it ?

Have you tried printing the value of soilMoist before the map() ?
What do you see and does it look right ?
What type of variable is soilMoist ?

Please post your complete program following the instructions in Read this before posting a programming question

3

the sensor ist Capacitive soil moisture v1.2 Like this :

yes i tried to read before and i have the value 1024 dry and 600-700 wet ....

4

As requested, please post your complete program