- 5V Supply
- Trigger Pulse Input
- Echo Pulse Output
- 0V Ground
- If you are sourcing a ultrasonic ranging module , the HC-SR04 is good choose . Its stable performance and high ranging accuracy make it a popular module in electronic market .
- Power supply :5V DC
- Quiescent current : <2mA
- Effectual angle: <15°
- Ranging distance : 2cm – 500 cm
- Resolution : 0.3 cm
- There are 4 pins out of the module : VCC , Trig, Echo, GND . So it's a very easy interface for controller to use it ranging. The all process is : pull the Trig pin to high level for more than 10us impulse , the module start ranging ; finish ranging , If you find an object in front , Echo pin will be high level , and based on the different distance,it will take the different duration of high level. So we can calculated the distance easily :
Shenzhen Harztec Technology Co., 309, 3F, Block B, Ganfeng Technology Building 1, No.993 Jiaxian Road, Xiangjiaotang Community, Bantian Street,, 518129 Shenzhen, China, [email protected], https://harztec.com