Hw-044 Datasheet File

is a compact RS232 to TTL converter module commonly used to bridge communication between microcontrollers (like Arduino, ESP32, or Raspberry Pi) and legacy industrial or computer equipment using the RS232 standard. Arduino Forum

Common Aliases:

Keyestudio Touch Sensor, TTP223 Module, Capacitive Touch Switch. hw-044 datasheet

• Power with 5V for full 3.2W output.
• Connect BCLK, LRC, DIN to I²S-capable pins.
• Set GAIN floating initially.
• Ensure your microcontroller outputs standard I²S format (not left-justified or TDM).
• Use a 4Ω to 8Ω speaker — never connect SPK- to GND.

How it works (simplified):

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 is a compact RS232 to TTL converter module

Specifications

: Detailed technical specifications such as voltage ratings, current ratings, power consumption, operating temperature range, and physical dimensions. Power with 5V for full 3

// Center calibration (replace with your values) int centerX = 512; int centerY = 512;