The HC-SR04 Ultrasonic Distance Measurement Control Module automates the use of the HC-SR04 Ultrasonic Range Finder and other ultrasonic modules and provides a direct readout of the distance as well as the measurement in centimeters over a serial port.

Features:

• Plug-in port for HC-SR04 Ultrasonic Range Finder module
• Also compatible with other ultrasonic modules as noted below.
• Built-in microcontroller automates distance measurement
• Built-in 3-digit display shows distance in centimeters
• 5V operation
• This small module includes a built-in microcontroller and 3-digit LED display. Just plug the HC-SR04 Ultrasonic module into the female header and apply 5V and ground. The module will now display the distance in centimeters. The HC-SR04 is good for about 2 to 400cm detection distance which is about 1″ to 13 feet and the display updates the distance every second.
• The module also sends the distance data out a serial pin in the format of ‘D:XXX‘ where XXX is the distance in centimeters. The data is sent every second at a baud rate of 9600 and this pin can be monitored by a serial port on an MCU if desired as shown in our example below.
• The module has several uses. One is simply to easily test HC-SR04 Ultrasonic modules without having to wire them up to an MCU. Another is to provide a display of the distance data such as when using the HC-SR04 on a robotic vehicle and you want an easy way to monitor the distance that the HC-SR04 thinks it is seeing.