Introduction - If you have any usage issues, please Google them yourself
Ultrasound-to-air radar: Use SRF05 ultrasonic range detector and 2 free steering gear, the plane can be scanned on the open area, there are objects entering the scan to keep track of. The disappearance of disappearance of objects, the regional expansion of the final scan. Effective distance of 2cm-60cm. Development Environment: arduino