DYP-A21AYYUW-V1.0 UART Auto Ultrasonic Obstacle Avoidance Sensor (Object Range 3 ~ 500cm)

The DYP-A21AYYUW-V1.0 sensor module operates from a wide 3.3V to 24V DC power supply. This flexibility allows it to be powered directly from 3.3V or 5V microcontroller boards like Arduino or Raspberry Pi, as well as from higher voltage industrial power rails up to 24V, simplifying system integration.

The sensor uses a UART (TTL-level) serial interface for communication. You can connect its TX and RX pins to a microcontroller's UART pins. All key parameters, including the baud rate (configurable), device address, measurement range, and detection angle (40°-65°), can be modified by sending specific command packets over this UART interface.

The sensor's accuracy is specified as 1cm + (S × 0.3%), where 'S' is the measured distance in centimeters. For example, at a 100cm target distance, the accuracy is ±(1cm + 0.3cm) = ±1.3cm. This formula indicates that the absolute error increases proportionally with distance, which is typical for ultrasonic time-of-flight measurement principles.

Yes, the module incorporates intelligent acoustic processing technology designed to identify and filter out same-frequency ultrasonic interference. This feature significantly reduces the probability of erroneous readings in environments where multiple ultrasonic sensors or other acoustic sources are operating, ensuring more stable and reliable data output.

The sensor features a dustproof and waterproof housing suitable for various environments. For optimal performance, ensure the detection surface is unobstructed and mounted securely. The wide 40° to 65° configurable beam angle allows you to tailor the detection field to your application, from a narrow, focused beam to a wider coverage area.