Hw-044 Datasheet !!hot!! May 2026

HW-044

The is a compact RS232 to TTL converter module built around the MAX3232 integrated circuit. It is primarily used to bridge the communication gap between industrial RS232 COM ports and microcontroller-based systems like Arduino or ESP32. Key Hardware Features

Legacy Hardware Interaction

: Connecting modern microcontrollers to older industrial equipment, CNC machines, or PLC systems. hw-044 datasheet

What is the HW-044?

Example host initialization (pseudocode)

Channel Mode (via SD_MODE)

Protection:

ESD protection up to ±15 kV for the RS-232 bus terminal. Pin Configuration & Layout HW-044 The is a compact RS232 to TTL

3. Connecting to Raspberry Pi (No Built-in ADC)