O cenário
Designing an Arduino-based system that measures vehicle speed on highways using two ultrasonic sensors spaced a known distance apart.
O que há neste desenho
Entenda as decisões por trás dele.
01
Use two HC-SR04 ultrasonic sensors to capture entry/exit timestamps
02
Power the Arduino and sensors from a regulated 5V rail with decoupling capacitor
03
Connect sensor trigger and echo lines to spare GPIO pins (D4-D7)
When building a speed detection prototype or educational demonstration of time-of-flight speed measurement.