Hw-044 Datasheet !new! Jun 2026
The module typically features a 4-pin header for the TTL/Microcontroller side:
The HW-044 module typically features 5 pins on one side (for the encoder signals and power) and 2 pins on the other side (for the push-button function).
| Parameter | Value | | :--- | :--- | | | HW-044 | | Primary IC | MAX3232 | | Operating Voltage | 3.3V - 5V DC (Compatible with 3.3V and 5V logic systems) | | Operating Current | ~6 mA (Very low power consumption) | | Main Function | Bi-directional RS232 ⇔ TTL signal level conversion | | Interface | RS232 side: DB9 female connector or terminal block TTL side: 4-pin header (VCC, GND, TXD, RXD) | | Dimensions (Approx.) | ~33mm x 32mm x 16mm (varies slightly by manufacturer) | | Baud Rate | Up to 250 kbps (depending on the MAX3232 chip) | hw-044 datasheet
, which uses voltage levels (±12V) that would instantly fry a modern 3.3V or 5V microcontroller. diyables.io That’s where the HW-044 module Key Specifications Based on the
For reliable data transfer, ensure that all grounds (microcontroller, module, and external device) are connected to a common point. The module typically features a 4-pin header for
TTL конвертер переходник, плата Max3232, модуль HW-044
Features a very low supply current, typically around 300 μA , making it efficient for battery-powered projects. Community forums like the Arduino Forum are also
The HW-044's performance is defined by its onboard MAX3232 chip , which is an upgraded version of the classic MAX232 that supports lower voltage ranges.
When searching for additional information online, using specific queries like or "RS232 TTL converter module" will yield more precise technical details. Community forums like the Arduino Forum are also excellent resources for project-specific questions and troubleshooting advice.
The HW-044 uses standard H-Bridge logic. Pulse Width Modulation (PWM) can be applied to the high pin to control rotation speed. Motor State LOW Coast / Stop HIGH LOW LOW HIGH HIGH HIGH Interfacing HW-044 with Arduino