Highlights
- Compatible with Arduino, NodeMCU
- Adopt IO trigger through supplying at least 10us sequence of high level signal
- The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal
- If there is signals returning, through outputting high level and the time of high level continuing is the time of that from the ultrasonic transmitting to receiving
- This is ultrasonic sensor distance measuring module which a non-contact distance measurement module. It has high measurement accuracy and its blind area is close (up to 2cm)
Specification
| General | |
|---|---|
| Type | Ultrasonic Sensor |
| Model | HC-SR04 |
| Quantity | 1 Piece |
| Arduino Library | HCSR04Ultrasonic |
| Power Supply | Working voltage: 3-5.5VDC Static current: less than 2 mA IO logic voltage: 3.3V / 5V |
| Measurement | Induction angle: not more than 15 degrees Detection range: 2-400 cm Accuracy: 3mm |
| Compatible | Arduino,NodeMCU |
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