Hw-044 Datasheet [portable] Review
The S2 and S3 pins dictate which internal channel or photodiode array is currently active and routing data to the OUT pin. Red filter / Channel 1 active S2 = L, S3 = H: Blue filter / Channel 2 active S2 = H, S3 = L: Clear (no filter) / Channel 3 active S2 = H, S3 = H: Green filter / Channel 4 active Application and Wiring Diagrams Connecting HW-044 to an Arduino Uno
The HW-044 is a compact, highly efficient dual motor driver module widely used in robotics and automation projects. It allows low-voltage microcontrollers to control the speed and direction of two independent DC motors or one bipolar stepper motor. Technical Specifications
The HW-044 module typically has four pin headers on one side for TTL connection and a DB9 female connector on the other. TTL Side (Header Pins) 3.3V - 5.5V Power Supply. GND: Ground. TXD: TTL Transmission Pin (Connect to Microcontroller RX). RXD: TTL Receiving Pin (Connect to Microcontroller TX). RS232 Side (DB9 Female)
After uploading this sketch to your Arduino:
The standard DB9 female socket handles the high-voltage lines running to the target hardware or a computer's native COM port. While a standard DB9 pin layout features 9 pins, the HW-044 primarily handles the data pipeline: hw-044 datasheet
The HW-044 module is built around the (or similar dual H-bridge) driver IC. It offers an ultra-compact alternative to the bulkier L298N module. Specification Driver Chip MX1508 Dual H-Bridge Logic Operating Voltage Motor Supply Voltage (VCC) Continuous Current Per Channel Peak Current (Peak Pulse) Low Standby Current Less than 0.1uA Thermal Protection Built-in thermal shutdown circuit Pinout Configuration
Each channel consists of:
Ensure the baud rate matches the device on both sides.
. Using 5V on a 3.3V-only pin can damage your microcontroller. Cross the TX/RX Pins : Remember that TX (Transmit) on the module goes to RX (Receive) The S2 and S3 pins dictate which internal
mm) makes it easy to integrate into DIY projects or equipment upgrades.
: Measuring roughly 31mm x 32mm, it fits easily into project enclosures for industrial equipment upgrades or radio modifications. Common Use Cases
The is a highly popular, dual-channel RS232 to TTL serial port converter board engineered around the Texas Instruments MAX3232 transceiver IC . This compact breakout board bridges the massive electrical gap between legacy industrial computer serial ports (
There is no official single datasheet from one manufacturer, because HW-044 is a generic module name. However, the underlying circuit is well-documented using BSS138 level shifter schematics (e.g., from SparkFun or Adafruit’s 8-channel BSS138 breakout). TXD: TTL Transmission Pin (Connect to Microcontroller RX)
Before we conclude, it's crucial to address the "HW-044" ambiguity again. While this document focuses on the RS232-TTL converter, it's vital to be aware that the same "HW-044" label may appear on other products.
Ideal for connecting modern microcontrollers to older industrial equipment, digital multimeters , or PLC units that still use RS232. Compact Design: Small footprint (approx.
As you've discovered, finding a single, unified hw-044 datasheet is impossible. Your path to technical documentation depends entirely on which module you have.
