HC-SR04 Ultrasonic Sensor Distance Measuring Module: Difference between revisions
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[http://www.dealextreme.com/p/133696 HC-SR04 Ultrasonic Sensor Distance Measuring Module] |
[http://www.dealextreme.com/p/133696 HC-SR04 Ultrasonic Sensor Distance Measuring Module] |
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- Model: HC-SR04 |
- Model: HC-SR04 |
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- Color: Blue + Silver |
- Color: Blue + Silver |
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- The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal |
- The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal |
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- 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 |
- 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 |
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Revision as of 14:38, 9 August 2012
HC-SR04 Ultrasonic Sensor Distance Measuring Module
- Model: HC-SR04 - Color: Blue + Silver - Working voltage : 5V(DC) - Static current: Less than 2mA. - Output signal: Electric frequency signal, high level 5V, low level 0V. - Sensor angle: Not more than 15 degrees. - Detection distance: 2cm~450cm. - High precision: Up to 3mm - Mode of connection: VCC / trig(T) / echo(R) / GND - Module Working Principle: - 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