The HW-044 is an excellent module for prototyping non-contact switches, moisture-proof interfaces, or battery-powered projects (thanks to its nanoamp sleep current). Just remember:
Datasheet TL;DR: The TTP223 is a brilliant, low-power capacitive sensor. The HW-044 is a well-executed breakout board that gives you access to 90% of the IC's features for less than $2.
Have you used the HW-044 for a weird project? Post your build in the comments below!
This analysis is based on the TTP223 datasheet (v1.3) and HW-044 board revision 2.0.
The HW-044 is a widely used, low-cost RS232 to TTL converter module built around the MAX3232 IC, which operates between 3.0V and 5.5V, making it compatible with 3.3V and 5V systems. As a generic module, its technical specifications generally align with the Texas Instruments MAX3232 datasheet, which supports data rates up to 250 kbit/s and includes ESD protection on the RS232 side.
The HW-044 is a serial port converter module designed to bridge the gap between RS232 signals and TTL (Transistor-Transistor Logic) levels. It is built around the MAX3232 integrated circuit, which allows standard COM port signals (typically ±12Vplus or minus 12 cap V
) to communicate with low-voltage microcontrollers like Arduino, ESP32, or STM32 (which operate at 3.3V3.3 cap V Technical Specifications
Based on the MAX3232 IC used in this module, the following electrical and environmental ratings apply: Operating Voltage: 3.0V3.0 cap V 5.5V5.5 cap V Maximum Data Rate: Typically Interface (Input): Standard DB9 Female RS232 connector. Interface (Output): 4-pin TTL header (VCC, GND, TX, RX). Operating Temperature: -40∘Cnegative 40 raised to the composed with power cap C +85∘Cpositive 85 raised to the composed with power cap C
Indicator: Often includes a Power LED (D1), though behavior may vary by manufacturer. Pinout Configuration
The TTL side of the HW-044 module features four primary pins for connecting to a microcontroller: VCC: Power supply input ( 3.3V3.3 cap V GND: Common ground. hw-044 datasheet
RX (Receive): Connects to the TX pin of your microcontroller.
TX (Transmit): Connects to the RX pin of your microcontroller. Key Features and Use Cases
Bi-directional Conversion: Converts high-voltage RS232 levels to logic levels and vice versa.
Wide Compatibility: Supports nearly all operating systems (Windows, Linux, MacOS) when used with a PC's hardware COM port or a USB-to-Serial adapter.
Legacy Integration: Ideal for connecting modern microcontrollers to older industrial equipment, digital multimeters, or PLC units that still use RS232. Compact Design: Small footprint (approx.
mm) makes it easy to integrate into DIY projects or equipment upgrades.
The HW-044 datasheet refers to a specific document that provides detailed information about the hardware specifications, characteristics, and possibly the usage guidelines of a component or module named HW-044. Without a direct reference to what the HW-044 specifically is (such as a part number from a manufacturer), it's challenging to provide a precise essay. However, I can give a general overview of what a datasheet like this might contain and its importance.
Datasheets are crucial documents for engineers, designers, and anyone working with electronic components or modules. They serve as a primary source of information for understanding the capabilities, limitations, and operational parameters of a device. For something like the HW-044, which could be anything from a simple electronic component to a complex module, the datasheet would be indispensable.
| Pin Name | Function | |----------|--------------------------------------------| | VCC | 5V power supply input. | | GND | Ground. | | DIN | Serial Data Input (MOSI from master). | | CS | Chip Select / LOAD (latches data into registers). | | CLK | Serial Clock (up to 10 MHz typical). | The HW-044 is an excellent module for prototyping
Note: Some variants label CS as LOAD or CS.
Advantages:
Limitations:
While a minor detail, the physical footprint matters for enclosure design. The HW-044 PCB typically measures:
The joystick cap itself is removable and compatible with standard PS2-style thumbstick caps (diameter ~12 mm).
The HW-044 is a workhorse component in the maker and prototyping world. While you may never find a single, bound PDF titled "hw-044 datasheet" from a major semiconductor brand, the information exists across component-level documentation and community testing. This guide has consolidated all essential data: electrical specs, pinout, wiring diagrams, code examples, mechanical dimensions, and application advice.
Whether you are controlling a robot, designing a custom gamepad, or building an interactive art installation, the HW-044 delivers reliable, low-cost, dual-axis analog control. Bookmark this page as your reference datasheet, and always remember to calibrate your readings in software for the best results.
For further reading, explore the datasheets of the ADC inside your microcontroller (e.g., ATmega328P for Arduino Uno) to understand how sampling rate and reference voltage affect joystick precision.
Keywords: hw-044 datasheet, HW-044 pinout, HW-044 joystick module, analog joystick Arduino, dual-axis joystick, KY-023 vs HW-044, PS2 joystick module. Datasheet TL;DR: The TTP223 is a brilliant, low-power
Last updated: May 2026. Specifications are based on typical production units; always verify with your specific vendor for critical applications.
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"
TTL конвертер переходник, плата Max3232, модуль HW-044
is a compact RS232 to TTL converter module primarily used to bridge communication between standard computer serial ports and microcontrollers like Arduino, STM32, or ESP32. It is based on the
transceiver IC, which allows it to handle bidirectional data conversion while supporting a wide range of logic levels. Key Specifications
MAX3232 (a modern, lower-voltage alternative to the classic MAX232). Operating Voltage: Supports both 3.3V and 5V systems (range of 3.0V to 5.5V). Baud Rate: Theoretically supports up to 230,400 bps
, though typically used at 115,200 bps or lower for stability. Interfaces: RS232 Side: DB9 Female Connector 4-pin header (VCC, GND, TXD, RXD). Operating Temperature: -40°C to +85°C. Pinout Configuration
The module typically features a 4-pin header for the TTL/Microcontroller side:
Here is a standard wiring diagram and code example to get your HW-044 running with an Arduino Uno.