SainSmart HC-SR04 Ranging Detector Mod Distance Sensor (Blue)
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- Item Weight
- 0.8 ounces
- Item model number
- HC - SR04
- Other display features
- Wireless
- Color
- Blue
Key features
- Using IO trigger for at least 10us high level signal
- The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back
- IF the signal back, through high level ,time of high output IO duration is the time from sending ultrasonic to returning. Test distance = (high level time velocity of sound (340M/S) /2
- Power supply :5V DC, quiescent current : <2mA,effectualangle: <15 ranging distance : 2cm~400 cm resolution : 0.3 cm
Specifications
| Product Dimensions | 1.3 x 0.4 x 0.05 inches |
|---|---|
| Item Weight | 0.8 ounces |
| Item model number | HC - SR04 |
| Other display features | Wireless |
| Color | Blue |
| Manufacturer | SainStore Inc. |
| ASIN | B004U8TOE6 |
About this product
SainSmart 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 : Distance = ((Duration of high level)*(Sonic : 340m/s))/2
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