The LM393 does not have built-in hysteresis, but many YL-105 modules add a small positive feedback resistor. Check your board; if not present, you may experience output jitter near the threshold. The datasheet often omits this, so add hysteresis in software (debouncing) or external resistors if needed.
The AO pin is rarely used in simple digital applications. It provides a voltage between 0V and VCC proportional to the magnetic field strength, useful for linear position sensing or magnetic field strength measurement.
This is the most common configuration – active low. Check your specific module for an output LED indicator; when the LED lights up, the output is active (usually LOW).
| Feature | YL-105 (Superheterodyne) | XY-MK-5V (Superregenerative) | | :--- | :--- | :--- | | | Low | High | | Stability | High | Low (drifts with temp) | | Price | Slightly Higher | Very Low | | Range | Better | Average |
over time when exposed to moisture and electric current. To extend life, it is recommended to power the sensor only during readings rather than continuously. Applications Automated Irrigation:
Common Arduino 3.3V pins often lack the peak current capacity needed during radio transmission, leading to communication failures. The YL-105 provides much cleaner and more robust power.
The LM393 does not have built-in hysteresis, but many YL-105 modules add a small positive feedback resistor. Check your board; if not present, you may experience output jitter near the threshold. The datasheet often omits this, so add hysteresis in software (debouncing) or external resistors if needed.
The AO pin is rarely used in simple digital applications. It provides a voltage between 0V and VCC proportional to the magnetic field strength, useful for linear position sensing or magnetic field strength measurement.
This is the most common configuration – active low. Check your specific module for an output LED indicator; when the LED lights up, the output is active (usually LOW).
| Feature | YL-105 (Superheterodyne) | XY-MK-5V (Superregenerative) | | :--- | :--- | :--- | | | Low | High | | Stability | High | Low (drifts with temp) | | Price | Slightly Higher | Very Low | | Range | Better | Average |
over time when exposed to moisture and electric current. To extend life, it is recommended to power the sensor only during readings rather than continuously. Applications Automated Irrigation:
Common Arduino 3.3V pins often lack the peak current capacity needed during radio transmission, leading to communication failures. The YL-105 provides much cleaner and more robust power.