_top_ - Hw-044 Datasheet

HW-044

The is a compact MAX3232 RS232 to TTL level converter module commonly used in DIY electronics to bridge communication between standard computer serial ports and microcontrollers like Arduino or ESP8266. Key Technical Specifications

• Cause: Lack of decoupling capacitor on VCC.
• Fix: Add a 100nF ceramic capacitor between VCC and GND close to the module.
• Software fix: Implement a moving average filter or median filter on the ADC readings.

HW-044

The is a compact, 8-channel, bidirectional logic level shifter module. It is designed to safely interface devices operating at different logic voltage levels—most commonly between 5V (e.g., Arduino Uno, classic 5V sensors) and 3.3V (e.g., ESP8266, ESP32, Raspberry Pi, many modern sensors/modules). hw-044 datasheet

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. HW-044 The is a compact MAX3232 RS232 to