Yl105 Datasheet Better Info

// 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

The most common mistake beginners make is assuming the datasheet’s logic table is absolute. Most YL-105 datasheets state: "IN = High → Relay OFF; IN = Low → Relay ON." This implies active-low operation. However, the better interpretation involves understanding the onboard NPN transistor (often a S8050) driving the relay coil.

Serial.print("Moisture: "); Serial.print(moisturePercent); Serial.println("%"); yl105 datasheet better

With normal use, 4× AA alkaline batteries in the main unit last approximately 3 months. The remote controls use 3× AG13 batteries each.

| YL-105 Pin | Arduino Uno Pin | | :--- | :--- | | VCC | 5V | | GND | GND | | TX | Digital Pin 2 (SoftwareSerial RX) | | RX | Digital Pin 3 (SoftwareSerial TX) | // Better YL-105 Reader – Compensates for missing

by resolving the notorious power instability and voltage mismatch issues common to 5V microcontrollers like the Arduino Uno . Building wireless networks with the popular 2.4GHz nRF24L01+ transceiver module

A sensor network uses several Arduino Nano nodes, each with a soil moisture sensor and a YL‑105 + nRF24L01+PA+LNA radio. The nodes transmit moisture data to a central master station. With the YL‑105 providing a stable 3.3 V supply to the radio, a single‑hop range of several hundred metres can be achieved. Serial

Arduino and NRF24L01 : 6 Steps (with Pictures) - Instructables

Searching "yl105 datasheet better" usually means you want a replacement. Let’s compare it to two superior sensors.