Arduino Ultrasonic Module HC-SR04 Distance Sensor

Cheap Arduino Ultrasonic Module HC-SR04 Distance Sensor Discount Review Shop

Available at Amazon

Cheap "Arduino Ultrasonic Module HC-SR04 Distance Sensor" Discount Review Shop

"Arduino Ultrasonic Module HC-SR04 Distance Sensor" Feature

• 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, effectual angle: <15°?ranging distance : 2cm~500 cm?resolution : 0.3 cm

"Arduino Ultrasonic Module HC-SR04 Distance Sensor" Overview

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



?

Available at Amazon

Cheap "Arduino Ultrasonic Module HC-SR04 Distance Sensor" Discount Review Shop

"Arduino Ultrasonic Module HC-SR04 Distance Sensor" Related Products

• Arduino UNO board
• Box for Arduino
• BB830 Solderless Plug-in BreadBoard, 830 tie-points, 4 power rails, 6.5 x 2.2 x 0.3in (165 x 55 x 9mm)
• Arduino Ethernet Shield
• Elenco 365 Piece Resistor Kit