SENSOR HC-SR04 ULTRASONIC DISTANCE MODULE
R40.00
14 in stock
Description
Gemini said
The HC-SR04 Ultrasonic Distance Module is essentially the “eyes” of a robot, acting much like a bat’s sonar. It uses sound waves to detect how far away an object is with remarkable accuracy for its low cost.
Product Description
The module consists of two silver cylinders: one is a transmitter (which sends out an ultrasonic high-frequency sound) and the other is a receiver (which listens for the echo). By measuring the time between sending the signal and receiving the bounce-back, the sensor calculates the distance to the target.
It is the most popular distance-sensing choice for hobbyist electronics because it is easy to program and works reliably in both light and dark environments, as it relies on sound rather than light.
Key Features
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Non-Contact Measurement: Detects objects from a distance without physical contact.
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High Precision: Offers stable readings with an accuracy of up to 3mm under ideal conditions.
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Small Footprint: Compact design makes it easy to mount on robot chassis or small project enclosures.
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Simple 4-Pin Interface: Requires only Power (VCC), Ground (GND), a Trigger pin to start the pulse, and an Echo pin to receive the result.
Common Applications
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Obstacle Avoidance Robots: The “brain” of the robot uses this to decide when to turn to avoid hitting a wall.
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Liquid Level Sensing: Mounted at the top of a water tank to measure how full it is without touching the liquid.
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Digital Tape Measure: Create a handheld device that displays the distance to a wall on an LCD screen.
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Parking Sensors: DIY versions of the sensors found in modern car bumpers to alert you as you get close to an object.
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Intrusion Alarms: Detecting when someone passes through a doorway or enters a specific range.
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