Searching "yl105 datasheet better" usually means you want a replacement. Let’s compare it to two superior sensors.
This sketch listens for incoming data and prints it to the Serial Monitor.
#include <SoftwareSerial.h>SoftwareSerial mySerial(2, 3); // RX, TX
void setup() // Initialize hardware serial for monitoring Serial.begin(9600);
// Initialize software serial for YL-105 mySerial.begin(9600);
Serial.println("Receiver Ready...");
void loop() // Check if data is available from the YL-105 if (mySerial.available()) // Read the byte and write it to the hardware serial monitor char c = mySerial.read(); Serial.print(c);
If you are building a wireless project, chances are you’ve come across the YL-105 module. It is a popular, low-cost wireless transceiver often found in Arduino starter kits and home automation projects.
However, if you’ve tried looking for a standard "YL-105 datasheet," you know the struggle: documentation is often sparse, written in broken English, or simply non-existent. Many users confuse it with similar modules like the HC-11 or HC-12.
This post serves as your definitive guide. We have consolidated the technical specifications, pinout diagrams, and code examples to help you get your YL-105 up and running in minutes.
If you are reading this blog, you might be experiencing "jitter." Here are the fixes:
1. The Voltage Drop: Long wires create resistance. If your control board is far from your MCU, the analog signal can degrade. The "Better Datasheet" fix? Place the Control Board near the sensor, and run long wires for power and digital signals, OR use a capacitor (100uF) across the VCC/GND rails near the sensor to smooth out the power supply.
2. The "Memory" Effect: Does your sensor say it's raining even after the sun comes out?
3. Corrosion: If your readings drift over weeks, look at the pad. Is it turning green or black? That is oxidation.
The datasheet says "non-condensing environment." But if condensation occurs, the sensor requires 2 hours of drying at 50°C. Better design: Mount the YL105 vertically, not horizontally, so water drips off the PCB.
