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Your cart is empty.Product Description
Feature :
- HC-SR04 Ultrasonic Sensor
- Power Supply :5V DC
- Quiescent Current : <2mA
- Effectual Angle: <15°
- Ranging Distance : 2cm - 500 cm
- Resolution : 0.3 cm
- Output Signal: Electric frequency signal, high level 5V, low level 0V
- Mode of Connection: VCC/ trig(T)/ Echo(R)/ GND (VCC supply 5V, and GND is ground wire. TRIG is trigger control signal input, ECHO is echo signal output.)
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
Product Package:
5 X HC-SR04 Ultrasonic Sensors
3 X HC-SR04 Mounting Bracket
10 X Female-Male Jumper Wires
10 X Female-Female Jumper Wires
Ashley G.
2025-08-07 16:27:19
I have a project I want to use some of these for but before that I wanted to make sure I knew how to use it. Pretty easy to setup and it works. I am planning on adding a temperature and humidity sensor and add some logic for it to calculate the appropriate speed of sound from those readings just to add a little extra accuracy but it was reasonably accurate just using rough numbers. I don't know if I will use them all but it's nice to have them.
Bruce Jackson
2025-07-11 14:34:01
Never thought I'd use the plastic mounting pieces but they are a must have since I mount these on my power wheelchair to tell me how close I am to something as I'm backing up. I also didn't think I'd use the cables since I already had some; but the length of these is perfect for my need. Great product.
Lei Wang
2025-07-07 14:58:22
Use it with arduino uno board. It worked well
Scott Duckworth
2025-05-01 12:52:39
I used this to make a litter box monitor to track my cat's potty patterns. It works perfectly to detects objects entering the litter box, as long as it's not a fluffy cat.This works as advertised, but works best on hard surfaces. It only works on 5V - I tried 3.3V but it doesn't work. Heads up that the echo signal is also 5V, so you may need a voltage divider or level shifter for many microcontrollers.
James B.
2025-04-30 17:17:29
My offspring needed this for a school project and it works perfectly. I don’t know what it does but he says it was perfect.
TVH
2025-04-21 13:50:12
I think my headline says it all. I would have preferred if they had a data-sheet or instructions. But they do work
Rebecca
2025-02-05 09:39:11
These sensors function well for the application I needed and the kit supplies nearly everything I needed to implement the devices.
Paul
2024-11-19 16:30:23
These things do what they say the do. The included mounts and wires are a nice touch.
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