![]() ![]() We are not going to learn about Ultrasonic sensors and accelerometers. Today, I’ll discuss the basic Introduction to HC-SR04 Ultrasonic Sensor.It is an ultrasonic sensor, also known as an ultrasonic transducer that is based on a transmitter and receiver and mainly used to determine the distance from the target object. The accessor functions will then output the range in either microseconds, inches, or cm. Controls resources for FIRST FRC robotics teams. ![]() Last year our seasoned programmer could not figure out how to use it and wound up giving up. Ping () //Sends an ultrasonic pulse for the ping object to read //Create an accessor function double getDistance () I am trying to find information about utilizing the HC-SR04 ultrasonic distance sensor in a FIRST Robotics FRC situation with the RoboRIO. Include the Ping Library #include "Ping_ros.h" /** * Constructor * Ping's ros threads (publishers and services) will run asynchronously in the background */ ros :: NodeHandle nh //internal reference to the ROS node that the program will use to interact with the ROS system VMXPi vmx ( true, ( uint8_t ) 50 ) //realtime bool and the update rate to use for the VMXPi AHRS/IMU interface, default is 50hz within a valid range of 4-200Hz PingROS ping ( & nh, & vmx, 8, 9 ) ping. Calibrating and Using the navX-sensor IMU Photoelectric Sensor Shaft Encoder Sensor Yaw Rate Gyro Sensor 3-Axis Accelerometer Sensor Ultrasonic Detector Sensor Gear Tooth Sensor Misc Pneumatic.Configuring and Testing the SR Pro Camera. ![]()
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