void setup() Serial.begin(9600); pinMode(sensorPin, INPUT);
delay(500);
// Apply quadratic correction (derived from reverse engineering) // Because the YL-105 datasheet lies about linearity float correctedRaw = -0.0003 * avgRaw * avgRaw + 1.2 * avgRaw - 150; yl105 datasheet better
// Better YL-105 Reader – Compensates for missing datasheet specs const int sensorPin = A0; const float dryAir = 420.0; // Calibrate in dry soil const float wetWater = 820.0; // Calibrate in saturated soil float readings[10]; int index = 0; float total = 0;
float moisturePercent = map(correctedRaw, dryAir, wetWater, 0, 100); moisturePercent = constrain(moisturePercent, 0, 100); void setup() Serial
Meta Description: Struggling with vague Chinese datasheets? We analyze the YL-105’s missing specs, compare it to superior alternatives, and provide a definitive guide to getting accurate readings. Introduction: The "YL-105 Datasheet" Problem If you have searched for the term "yl105 datasheet better" , you have likely hit a wall. The typical YL-105 datasheet found online is a single page of broken English, missing critical dynamic parameters, temperature drift graphs, or noise characteristics. For a soil moisture sensor module, this lack of data transforms a simple analog read into a nightmare of inconsistent readings.
After scouring GitHub, Hackaday, and Chinese forums, the answer is no . There is no official v2.0 datasheet. The YL-105 is a victim of its own success — so cheap that manufacturers don't bother with documentation. The typical YL-105 datasheet found online is a
However, . By following the calibration, hardware mods, and code above, you have essentially created a custom technical reference that outperforms any factory document.