HC-SR04 Ultrasonic Sensor is a device that can measure the distance to an object by using sound waves. It measures distance by sending out a sound wave at a specific frequency and listening for that sound wave to bounce back. By recording the elapsed time between the sound wave being generated and the sound wave bouncing back, it is possible to calculate the distance between the sonar sensor and the object.
Ultrasonic Sensor HC-SR04 is great for all kind of projects that need distance measurements, avoiding obstacles as examples.HC-SR04 provides 2cm-400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules include ultrasonic transmitters, receiver and control circuit.
For Arduino Project with Ultrasonic Sensor
HC-SR04 consists of ultrasonic transmitter, receiver, and control circuit. Connection mode: VCC, trig (control), echo (receiving end), GND ground wire.
Ultrasonic Sensor Module Working Principle
Pull the Trig pin to high level for more than 10us impulse, the module start ranging. The module automatically sends eight 40KHz square wave to detect whether a signal is returned. Finished 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. The distance = ((Duration of high level)*(Sonic :340m/s))/2. Distance L = 1/2 × T × C
1. Use voltage: DC 5V 2. Quiescent current: less than 2mA 3. Level output: high 5V low 0V 4. Induction angle: no more than 15 degrees(<15°) 5. Detection range: 0.78~196 in/ (2cm~500cm) 6. High accuracy: up to 0.12 in/(0.3 cm) 7. Trigger Input Pulse width: 10uS 8. Dimensions: 1.3 x 0.4 x 0.1 inch/3.03 x 1 x 0.25 cm (L*W*H)
BeFuns Intelligence (Shen Zhen) Ltd.
1、We have a strong R&D team, including hardware engineers, software engineers, algorithm engineers, 3D structure engineers.
2、We have several fully automatic production lines, production equipment including high-speed placement machine, reflow machine, wave soldering machine, 3D scanner, visual inspection machine, laser marking machine.
3、We can support product customization, quick response and fast delivery.
Why Choose Us
Q1: Are you manufacturer ? A1: Yes, we are manufacturer.
Q2: Do you accept OEM design? A2: Yes,we do.We can design according to your requirement, MOQ usually >1000.
Q3: How long is your delivery time?
A3: Normally 3-6 working days after payment; Special requirement orders, delivery time is negotiable.
Q4: How can we get samples from you ?
A4: Samples are available. Normally we take 2 days to arrange samples. If we have no business record with you before, we need to charge boot samples cost and post courier freight.
Q5: Do you accept pay 30% in advance?
A5: Yes,we do.We can start to prepare your goods when receive 30% payment, and send them after get the rest 70% payment.
Q6: What payment terms you accept?
A6: We accept Paypal, T/T, Alibaba Trade Assuarce, Western Union, Wechat, Alipay, in Cash (RMB or USD)..