The HW-044 (often cross-referenced with the KY-032) is a popular infrared (IR) obstacle avoidance sensor module widely used in DIY robotics and automation. This compact module operates by emitting a beam of infrared light and measuring the reflection to detect nearby objects without physical contact. Core Specifications
Last updated: May 2026. Specifications are based on typical production units; always verify with your specific vendor for critical applications. hw-044 datasheet
Versatility: Works with almost any microcontroller regardless of whether it's 3.3V or 5V. The HW-044 (often cross-referenced with the KY-032 )
In the world of DIY electronics, we often need to talk to "old school" hardware—things like old GPS units, POS systems, or industrial PLCs. These devices usually communicate over Specifications are based on typical production units; always
The HW-044 module allows you to configure the amplifier gain and audio channel selection by connecting the GAIN and SD_MODE pins to either VIN, GND, or leaving them floating.