| Feature | Hw-133-v1.0 | FC-28 | YL-69 | HL-83 | | :--- | :--- | :--- | :--- | :--- | | Comparator | LM393 | LM393 | LM393 | None (only analog) | | Potentiometer | Yes | Yes | Yes | No | | Analog Output | Yes (AO) | Yes (AO) | Yes (AO) | Yes (AO) | | Digital Output | Yes (DO) | Yes (DO) | Yes (DO) | No | | Typical Price | $1.50 | $2.00 | $1.80 | $1.00 |
The Hw-133-v1.0 is functionally identical to the YL-69 and FC-28. The "v1.0" primarily indicates the PCB layout revision.
The HW-133-v1.0 is almost universally a Raindrops Detection Sensor Module. It is functionally identical to the more commonly known FC-37 or YL-83.
The "v1.0" simply indicates the PCB revision. If you have this board, you have a device designed to detect water, moisture, or rainfall.
/* Hw-133-v1.0 Rain Sensor Demo Reads digital (rain alert) and analog (water level) values. */const int DIGITAL_PIN = 2; // DO pin const int ANALOG_PIN = A0; // AO pin
void setup() Serial.begin(9600); pinMode(DIGITAL_PIN, INPUT); Serial.println("Hw-133-v1.0 Sensor Ready");
void loop() Status: ");
if (digitalValue == LOW) Serial.println("WATER DETECTED!"); // Add buzzer or relay code here else Serial.println("Dry");
delay(500);
These values are practical defaults used in application design; confirm against your unit’s silkscreen or vendor sheet where available.
The Hw-133-v1.0 typically separates into two boards: the sensing probe (exposed copper tracks) and the control board (LM393). The control board has a 4-pin male header. Hw-133-v1.0 Datasheet
Since HW-133 is a PCB design, not a chip, search for these terms instead:
The Hw-133-v1.0 is a versatile, affordable water detection module that outperforms many bare sensors because of its onboard comparator and adjustable sensitivity. While the "v1.0" silkscreen can be ambiguous (rain sensor or ultrasonic), this datasheet confirms that the rain sensor variant is by far the most common. By following the pinout, wiring diagrams, and Arduino code above, you can integrate the Hw-133-v1.0 into any moisture-sensing project within minutes.
Remember to address the corrosion issue with intermittent powering or regular cleaning. With proper handling, the Hw-133-v1.0 provides reliable service for leak detection, gardening automation, and industrial liquid monitoring.
Keywords incorporated: Hw-133-v1.0 Datasheet, Hw-133-v1.0 pinout, Hw-133-v1.0 specifications, Hw-133-v1.0 Arduino, Hw-133-v1.0 rain sensor, LM393 module.
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License: Free to distribute for educational purposes. Always verify with your actual hardware revision.
The HW-133-V1.0 is a compact 3A DC-DC buck converter module offering up to 92% efficiency and a low 0.8 mA quiescent current, making it ideal for space-constrained, battery-powered projects. Measuring only 17×11×3.8 mm, the module provides a cleaner, more efficient power output (≤45mVpp ripple) compared to traditional LM2596 regulators. For technical details, visit AliExpress Wiki.
The HW-133-V1.0 is a compact, high-frequency DC-DC Step-Down (Buck) Converter module based on the MP1584EN control chip. It is widely used in hobbyist electronics, drone technology, and DIY projects where space is limited but power efficiency is critical.
Below is a detailed technical summary based on its hardware specifications. ⚙️ Core Specifications
The module's performance is defined by its integrated Monolithic Power Systems (MPS) MP1584EN controller. Input Voltage: 4.5V4.5 cap V to 28V28 cap V DC. Output Voltage: 0.8V0.8 cap V to 20V20 cap V DC (Adjustable via onboard potentiometer). Maximum Output Current: (Peak), (Recommended for continuous use without external cooling). Switching Frequency: Up to 1.5MHz1.5 cap M cap H z (Typical 1.0MHz1.0 cap M cap H z ), allowing for very small external components. Efficiency: Up to (Varies based on voltage differential). Output Ripple: Typically less than 30mV30 m cap V . Operating Temperature: -45∘Cnegative 45 raised to the composed with power cap C to +85∘Cpositive 85 raised to the composed with power cap C . 🛠️ Hardware Design & Pinout
The HW-133-V1.0 uses a minimal-component layout to achieve its small footprint ( ). Description IN+ Positive supply voltage ( 4.5V4.5 cap V – 28V28 cap V ) IN- Ground / Negative supply OUT+ Regulated positive voltage output OUT- Ground / Negative output (Common with IN-)
Adjustment Potentiometer: A multi-turn trimmer is usually present to fine-tune the output voltage. Turn counter-clockwise to decrease voltage and clockwise to increase it. | Feature | Hw-133-v1
Form Factor: Often referred to as "Mini-360" or "Mini MP1584" due to its extremely small size and 360-degree component density. 💡 Key Features & Protections
Ultra-Small Size: Frequently used in flight controllers and RC models where every gram matters.
Low Quiescent Current: Efficient performance even during idle states. Integrated Protection:
Thermal Shutdown: Automatically turns off if the chip exceeds safe temperatures.
Over-Current Protection (OCP): Limits output current to prevent chip damage.
Under-Voltage Lockout (UVLO): Prevents the module from operating if input power is too low. ⚠️ Usage Best Practices
Voltage Differential: For stable regulation, ensure the input voltage is at least 1.5V1.5 cap V higher than the desired output. Heat Dissipation: If drawing more than
continuously, it is recommended to add a small heatsink or ensure active airflow.
No Reverse Polarity Protection: The module does not have a diode on the input. Reversing the positive and negative input leads will likely destroy the module.
Initial Tuning: Always measure the output with a multimeter before connecting sensitive electronics (like an Arduino or ESP32) to ensure the voltage isn't set too high from the factory.
The HW-133-v1.0 (often labeled as an XM1584 or MP1584EN module) is an ultra-compact DC-DC buck converter designed for high-efficiency voltage regulation in space-constrained projects like drone builds, portable medical devices, and embedded systems. Key Technical Specifications Keywords incorporated : Hw-133-v1.0 Datasheet
Based on various datasheet summaries, the module typically operates within these parameters:
Input Voltage Range: 4.5V to 28V (some variants specify 4.75V to 23V).
Output Voltage: Adjustable from 0.8V to 20V via an onboard potentiometer.
Maximum Output Current: 3A (rated), though continuous loads above 1.5A–2A may require additional cooling.
Switching Frequency: High-frequency operation, typically 1.0MHz to 1.5MHz, allowing for very small external components. Efficiency: Up to 96% peak efficiency.
Dimensions: Roughly 22mm x 17mm x 4mm, making it significantly smaller than standard LM2596 modules. Performance Review Pros:
Compact Form Factor: Its tiny footprint (often 17x11mm depending on the specific V1.0 variant) makes it a "go-to" for hobbyists who find standard LM2596 boards too bulky.
High Efficiency: Compared to traditional linear regulators (like the 7805), this module wastes very little energy as heat, which is critical for battery-operated devices.
Low Idle Power: It features a very low quiescent current (around 0.8mA), making it ideal for long-term battery monitoring.
Stable Output: Operates at a frequency (typically >340kHz) that avoids audible noise and maintains low output ripple (≤45mVpp). Cons:
Thermal Limits: While rated for 3A, users report significant heat generation at high current levels. For a long lifespan, it is best used under 1.5A unless a heatsink is added.
Potentiometer Sensitivity: The onboard miniature potentiometer can be sensitive, requiring fine adjustments to dial in precise voltages like 3.3V or 5V.
Input/Output Differential: As a step-down (buck) converter, the input voltage must always be higher than the target output voltage (e.g., a 12V input is recommended for a stable 5V output). Summary Table: HW-133-v1.0 vs. LM2596