Hw-044 Datasheet Jun 2026

The HW-044 module is used primarily for these purposes:

On most HW-044 boards, these pins are labeled directly on the PCB silk screen. If not, identify GND and VCC first (often the two outer pins or the pair closest to the board edge).

This article serves as the definitive technical resource for the HW-044. We will cover every detail found in a formal datasheet: electrical characteristics, mechanical dimensions, pin configuration, internal schematic, interfacing methods (analog and digital), example code, and troubleshooting tips. By the end, you will have all the information needed to integrate this versatile component into your next project.

The HW-044 is a crucial tool for troubleshooting and interfacing, specifically in: hw-044 datasheet

+-----------------------------------+ | | (TX) [o]| [ TXD ] +----------+ | ########### (RX) [o]| [ RXD ] | MAX3232 | | # DB9 # (VCC)[o]| [ VCC ] +----------+ | # Female # (GND)[o]| [ GND ] | # Port # | | ########### +-----------------------------------+ 1. TTL Microcontroller Side (4-Pin Header)

Inside the IC, the conversion is handled by dual state-inverters. Legacy RS232 protocols use negative logic logic gates: a logic "1" (Mark) sits between -3V and -15V, while a logic "0" (Space) sits between +3V and +15V. The MAX3232's onboard charge pump steps up standard 3.3V/5V inputs to the appropriate higher positive and negative voltage rails needed for standard RS232 validation, converting standard logic Highs and Lows automatically without distorting baud rates. How to Connect the HW-044 to an Arduino Uno

The HW-044 is available on all major electronics platforms. Search for "HW-044 MAX98357 I2S amplifier module". The HW-044 module is used primarily for these

The HW-044 is a compact RS232 to TTL converter module featuring the MAX3232 chip, allowing 3.0V to 5.5V operation for interfacing microcontrollers like Arduino with RS232 devices. It provides a female DB9 connector for serial data and a 4-pin header for VCC, GND, TX, and RX signals. For more details, visit freedelivery.com.ua Магазин "Бесплатная доставка"

Connecting microcontrollers to older GPS modules, PLC systems, or radio equipment.

Connect on the HW-044 to Digital Pin 3 (Configured as TX via SoftwareSerial). We will cover every detail found in a

: Upload the following sketch to your Arduino. This code initializes the hardware serial port at 9600 baud. It will read any data sent from your PC (via the RS232 cable) and immediately send it back (echo it).

void setup() // Initialize the hardware serial port for debugging (connected to your PC via USB) Serial.begin(9600);