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HC-SR04 Ultrasonic Distance Measuring + Display Module for Arduino
About Ultrasonic Range Sensor module: - This performance of the ultrasonic sensor distance measuring module is stable£¬ measure the distance accurately. The module is with High precision£¬ blind spots (3cm) super close. This module provides a full set of ranging process. - Model: HC-SR04; - Operating voltage: 5V DC; - Static current: Less than 2mA; - IO logic voltage: 5V; - Sensor angle: Not more than 15 degrees; - Detection distance: 2cm~450cm; - High precision: Up to 3mm; - Mode of connection: VCC / trig(T) / echo(R) / GND; - Adopt IO trigger through supplying at least 10us sequence of high level signal; - The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal; - If there is signals returning£¬ through outputting high level and the time of high level continuing is the time of that from the ultrasonic transmitting to receiving. About 4-Digit Display module: - The module is based on a decimal point display module£¬ it displays four digital tube (0.56 inches)£¬ only two signal lines can make MCU control four Digit 8-segment LED. Can be used to display decimal£¬ letters and so on; - Can display the measuring distance by the ultrasonic range module; - 8 class adjustable brightness; - Operating voltage: 3.3~5.25V; - IO logic voltage: 3.3V or 5V.