Hw-133-v1.0 Datasheet ((better)) Official
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.
3A (Maximum), though 1.5V–2A is recommended for continuous use without extra cooling. Switching Frequency: Up to 1.5MHz (allows for a very small module size). Conversion Efficiency: Up to 96%. 🛠️ How to Use the HW-133-v1.0 Identify Pins: Locate the four solder pads: : Connect your power source here (e.g., a 12V battery). OUT+ / OUT- Hw-133-v1.0 Datasheet
ESP32 (Arduino Core)
- The ESP32 is 5V tolerant on some pins, but use 3.3V for VCC to match logic levels.
- The analog output (AO) works perfectly with
analogRead(pin)on any ADC1 pin (GPIO 32-39).
The "v1.0" simply indicates the PCB revision. If you have this board, you have a device designed to detect water, moisture, or rainfall. The HW-133-V1
: Before connecting any load, connect the input power to the terminals. Use a multimeter on the The ESP32 is 5V tolerant on some pins, but use 3
5. The Legacy Factor
Why is the HW-133-v1.0 datasheet still relevant in 2024? Because it represents the University Standard. Every robotics 101 class uses this driver. It is cheaper than lunch. The datasheet serves as a rite of passage—teaching students that "Logic Supply" and "Motor Supply" are two very different beasts.
What is the Hw-133-v1.0?
The Hw-133-v1.0 is most commonly identified as a Rain Water Level Detection Sensor Module. It is a low-cost, analog/digital output board used to detect the presence of water, rain, or the liquid level in a container. The "v1.0" indicates the first major revision of the hardware design.