senzor ultrasonic ultrasunete distanta HC-SR04 arduino avr pic stm arm
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Produs:Nou, Fără garanție
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Numar articol:179928894
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Disponibilitate:Indisponibil
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Preț:17,00 Lei
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Anuntul a expirat la:06.03.2022, 08:15
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Specificatii
Ultrasonic ranging module HC - SR04 provides 2cm - 400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules includes ultrasonic transmitters, receiver and control circuit. The basic principle of work: 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 Wire connecting direct as following: 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 . Compared to the Shap IR ranging module , HC-SR04 is more inexpensive than it . But it has the same ranging accuracy and longer ranging distance. Specifications: 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 : Distance = ((Duration of high level)*(Sonic :340m/s))/2
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