Essential replacement part for The Arbot Arduino-Based Robot
Description:
Get object/distance detection in your project using the low-cost HC-SR04 Ultrasonic Distance Module from Elegoo. Using the same principle as bats (Echo location), this module uses Trigger and Echo pin to send a signal and listen for it to be 'bounced back'. With a few lines of code you'll be detecting objects for your project. This module is the perfect option for detecting objects between 2cm-500cm in front of your project.
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Range - This module can detect objects between 2cm and 500cm in front of itself with an angle of 15 degrees either side.
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Accuracy - The readings of the module can be broken down into 0.3cm increments, which is plenty for most robotics projects
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Mounting - Used by many makers, in many projects, the 4 holes on the circuit board make for easy mounting into your project
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Software - As a favorite distance sensor, there are plenty of libraries and examples available to use with Arduino, Micro:bit, Raspberry Pi and other maker platforms.
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Distance calculation - Once it's wired up, you'll use the formula: distance = (traveltime/2) x speed of sound for a measurement in centimeters
How to use this Ultrasonic Distance Sensor
As this module is a 5V sensor, you can use it with almost any of the popular maker platforms (Arduino, micro:bit, etc). You'll simply need to wire the device up to your board and configure the trigger and echo pins as Output/Input pins respectively. Once you've got it configured correctly, use your code to take the Input reading from the Echo pin and plug it into the distance formula: distance = (traveltime/2) x speed of sound to get a distance reading.
It's really that easy. There's even a library for Arduino, NewPing, that makes the process even easier for you. We've written a pretty comprehensive guide on how you can use this module in your projects. It's guaranteed to get you up to speed as fast as possible.
Core Electronics guide on using Ultrasonic Distance Modules with Arduino
Core Electronics guide on Sensors and how to use them
Technical Specifications
- Power Supply :+5V DC
- Quiescent Current : <2mA
- Working Current: 15mA
- Effectual Angle: <15°
- Ranging Distance : 2cm – 400 cm/1″ – 13ft
- Resolution : 0.3 cm
- Measuring Angle: 30 degree
- Trigger Input Pulse width: 10uS
- Dimension: 45mm x 20mm x 15mm
Technical Datasheet for the HC-SR04 Ultrasonice Distance Sensor
