Hw-044 Datasheet ((link)) Site

When searching the web for "hw-044 datasheet PDF," you will often find user-compiled documents on GitHub, Arduino forums, or component marketplace listings (e.g., LCSC, AliExpress). Always cross-reference electrical limits with the component datasheets.

| Parameter | Condition | Min | Typ | Max | Unit | |-----------|-----------|-----|-----|-----|------| | VIN (unregulated) | Using onboard regulator | 4.5 | 5-9 | 12 | V | | VIN (regulator bypass – not recommended) | – | 3.0 | 3.3 | 3.6 | V | | 3.3V Output Current | Natural cooling | 0 | 400 | 800 | mA | | Logic Frequency | Without pull-up resistors | – | – | 100 | kHz | | Logic Frequency | With 10kΩ pull-ups | – | – | 400 | kHz |

: Features 4-pin TTL header (TXD, RXD, GND, VCC) and a female DB9 connector for RS232. Dimensions : Approximately 33mm x 32mm x 16mm. Pin Configuration & Connection hw-044 datasheet

Connect TXD (Module) to RXD (Arduino Pin 0) and RXD (Module) to TXD (Arduino Pin 1).

If you are not receiving data, try swapping the TXD and RXD connections on the TTL side. 3. How to Use the HW-044 Module with Arduino When searching the web for "hw-044 datasheet PDF,"

Full-Duplex (simultaneous send and receive) Dimensions: Approximately (1.26" x 1.1") 2. HW-044 Pinout and Wiring

The most critical section of the HW-044 datasheet for the builder is the pinout. Unlike many sensors that require 4 pins (VCC, GND, and data), the HW-044 typically uses a . Dimensions : Approximately 33mm x 32mm x 16mm

This section is a classic bidirectional level converter circuit using four MOSFETs (often BSS138) and four pull-up resistors.