HC-SR04 Ultrasonic distance range finder
Working Voltage: 5V (DC)
Static current: Less than 2mA.
Output signal: High @ 5V, low @ 0V.
Sensor max angle: 15 degrees.
Detection distance: 2cm – 450cm.
High precision: ~0.3cm
Size: 44 * 20 * 15mm
How to use:
1. Trigger (trig) with a pulse of at least 10uS high (5v)
2. Module does it’s thing! (8 sets of range measurement)
3. If echo pin goes high (5V) time the width of this pulse.
4. Distance = Time (in uS) / 58 cm = Time / 148 inches.