HC-SR04 Ultrasonic Proximity Sensor R2
$1.40
- Description
- Additional information
- Reviews (14)
- Enquiry2
Description
Reliable, high performance, high accuracy, blind area within 2cm
Specification:
- Voltage：DC 3.3 – 5V (R2 version now is 3.3V-5V compatible)
- Current：less 2mA
- Sensing angle：Less than 15 degree
- Sensing distance：
- 2cm-450cm for 5V
- 2cm-400cm for 3.3V
- Accuracy：about 0.3cm
- PCB Dimension：4.5*2.0CM
- Connection: VCC, trig(Control), echo(Receive), Out, GND
Working principle：
- Send high TTL signal at trigger IO.
- Module automatically send 8*40khz squre wave in order to detect if there are any signal return.
- when signal return, use each(receive) IO pin output high TTL, the output TTL time length is the time from sending till return.
- try to use this fomula: distance = (high TTL time* velocity of sound)/2
- velocity of sound = 340m/s
Buck order price 17% discount for 50pcs, auto update price in cart.
Documentation: See more at this wiki page.
Additional information
| Weight | 0.008 kg |
|---|
Harry –
Good, stable and accurate ultrasonic sensor. Needed it for switching on/off a project if someone was in a range of 0 to 30 centimetres. Works like a charm. And like all the stuff you can find here, the price is unbeatable.
Sachin (verified owner) –
Nice product! These sensors are capable of measuring up to a range of 4 mts or more. Good quality product at affordable price.
koursaros (verified owner) –
Nice sensor
good price
snapper101 –
This is a very good sensor that is good for starting robotics people allowing them to develop robots that can sense its surroundings.
schnetzi (verified owner) –
Very good price, good quality and works very well 🙂
dancewicz.grzegorz (verified owner) –
Really good one, I used it to support my wife with car park in our garage – blinks the Red/Yellow/Green LED depending on distance to the wall left. Of course great price!
snapper101 –
This is a very good sensor that can be used for a lot of robotics purposes. Its sensing distance is not that far, but good for smaller robotics projects, google for the biped robot “BOB” the biped. It’s a very simple robot that can be built with the micro servos available here and also this sensor.
yfands (verified owner) –
Well Build and cheap, if you’re using an Arduino, try this library
http://forum.arduino.cc/index.php?topic=106043.0
I was able to measure within 2 – 273 centimeters.
cromdeveloper (verified owner) –
Good, stable and accurate ultrasonic sensor
jpoilux (verified owner) –
Works like a charm.
Very good product!
alexbunodiere (verified owner) –
Great product,very easy to use
Christoph (verified owner) –
The classic HC-SR04. Robust, reliable and accurate. I use one to measure the water level in my cistern.
geraldhasmail (verified owner) –
Excellent! Very easy to set up with Arduino, great for measuring the height of fluid in a tank if you don’t want to get a sensor wet.
adrien.sortais28 –
Must have in any project !