Ultrasonic sensor HC-SR04 uses sonar wave to determine distance. this sensor provides distance sensing without direct contact. HC-SR04 ultrasonic sensor able to read distance from minimum 2CM to maximum 400 CM. Sun light and other sensor can not affected this sensor.
Features
| Spec |
Value |
| Power Supply |
5V DC |
| Current |
15 mA |
| Effective Angle |
15° |
| Distance sensing |
2 CM - 400 CM |
| Angle sensing |
30° |
There are 4 pin on HC-SR04. they are :
| Pin Name |
- |
| VCC |
Power Source 5V |
| Trig |
Sonar Trigger |
| Echo |
Sonar Receiver |
| GND |
Ground |
HC-SR04 calculates distance must receive power DC 5V within 10 μS(microseconds). This will triggered Trig pin to send 8 sonar wave within 30 KHz and waiting for wave reflection. wave reflection then received by Echo pin. interval time between wave reflection used to calculates distance.
Features
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