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Description
- 1x Dagu Ultrasonic HC-SR04 Distance Measurement Sensor Module
- 43 x 25 mm
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Parameters
- Working voltage: 3.3 V ~ 5 V
- Minimum measurement distance: 2 cm
- Maximum measurement distance: 350 cm
- Type: Echo (input digital signal), trig (output digital signal)
- Interface mode: Ph2.0-4p
- Module weight: 86 g
- Pin definition:
- Echo: receive input
- Trig: transmit output
- -: GND
- +: VCC
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Working principle
- Input a high level of more than 10us to trig pin to trigger module ranging
- When the ranging is finished, the echo pin will output a high-level
- The level width is the sum of the ultrasonic round-trip time