HC-SR04 Ultrasonic Distance Sensor – 3mm to 2000mm

Your speedy robotics project needs fun sensors and tiny components to help it zoom around your living room and watch out for walls! Ultrasonic sensors are one method that allows electronics to find exact distances and measurements between various objects. Just like bats or dolphins, the sensor module sends out a sound wave which bounces on nearby objects and returns. The distance is calculated in milliseconds for your microcontroller to action appropriate commands, such as stop. There are many ultrasonic sensors to choose from according to your project’s needs and this HC-SR04 Ultrasonic Distance Sensor offers a long detection range.

This HC-SR04 Ultrasonic Distance Sensor gives Makers a fun proximity sensor to experiment with, that detects objects up to 2m. When compared to infra-red sensor modules, these ultrasonic distance sensors enjoy the benefit of remaining unaffected by direct sunlight, making them an ideal choice for indoor and outdoor applications. The HC-SR04 Ultrasonic Distance Sensor can detect almost any type of obstruction from a minimum of 3mm regardless of texture. Transparent glass, shiny surfaces, or even liquids have no differing effects on the ultrasonic sound waves that the sensor relies upon for its calculations.

Compatible with many Arduino and Raspberry Pi microprocessors, the HC-SR04 Ultrasonic Distance Sensor is a fun accessory for projects that need accurate object sensing. You could create your own efficient sensor to track the water levels in your JoJo tank, turn on the lights with movement, or give your mobile robotics friend eyes as keen as a bat’s.

Typical Applications for HC-SR04 Ultrasonic Distance Sensor:

With so many cool and exciting features for Makers like us to truly sink our teeth into, the HC-SR04 Ultrasonic Sensor is a really fun little tool to experiment with in both small-scale as well as large-scale Electronics projects. Using 8 cycle bursts of 40KHz ultrasound, the HC-SR04 Ultrasonic Sensor offers 2mm accuracy and a detection distance of up to 2m, which makes this unit great for professional use and fun hobbyist projects.

As such, some of the fun useful applications that you could use this Range Sensor Module for include:

• Creating your own range-finder for DIY work at home, measuring precise distances between walls, corners and other important landmarks as you plan out your next big project.
• Equipping your little robot buddy with a brand-new set of eyes, connected to your trusty Arduino microprocessor.
• Building a clever automatic sorting machine with Raspberry Pi that identifies the sizes of objects and sorts them according to their width and height.

The projects mentioned above are certainly cool ideas, but we can’t wait to see the innovations Makers can create with an Ultrasonic Sensor like this. So, if this sounds like a cool challenge for you, then get yourself one of these awesome sensors and start experimenting.