Someone built ultrasonic scanning on a tiny microcontroller and it’s seriously impressiveUsing Arduino, an ultrasonic sensor + a servo motor turns into a mini radar system: → scans surroundings in a sweep→ detects objects in real time→ measures distance with sound waves→ builds a simple spatial mapAs the sensor rotates, it continuously emits ultrasonic pulsesWhen those waves hit an object, they bounce back and the time delay is used to calculate distanceThat data is then plotted into a live rada