Ultrasonic Proximity Sensor Kit

Name: Ultrasonic Proximity Sensor Kit
Brand: The Science Hut
SKU: 1005006995616258-Default Title
Price: 26.95 USD
Availability:  InStock

$26.95

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Unleash the power of hands-on learning with the Ultrasonic Proximity Sensor Electronics Kit—an exciting, build-it-yourself electronics project that brings science, technology, engineering, and math (STEM) to life. Designed for curious minds of all ages from 12 and up, this engaging kit helps learners master soldering, circuits, and sensor technology while building a fully functional proximity alarm device.

Whether you're a student, hobbyist, or an adult rekindling your love for electronics, this project is as educational as it is entertaining. The kit includes everything needed to construct a real working device that measures distance using ultrasonic waves—just like a bat does! Once assembled, it emits a buzzer alert when objects enter a user-defined detection range.

🧠 Why Parents and Educators Love It:

Makes abstract STEM concepts concrete and easy to grasp.

Promotes focus, perseverance, and critical thinking.

Provides a quality bonding time activity for parents and kids.

Suitable for home learning, classrooms, science fairs, and maker events.

🎮 Why Learners Love It:

It’s fun to build and even more fun to play with!

Real-time LED display for distance readouts.

Customizable alert range—set your own detection zone.

Build confidence and pride through real results.

An amazing exhibit for your next Show-and-Tell class!

💡 Some Cool Use Suggestions:

DIY motion-triggered doorbell or intruder alert.

Clever garage parking assistant. Avoid those costly bumps!

Protect your snack stash from sneaky hands!

Use as a distancing alarm to keep people away from your desk or workspace.

Use it as a digital measuring tape.

Ready to make learning truly hands-on? Order the Ultrasonic Proximity Sensor Electronics Kit Now! Perfect for beginners and seasoned makers alike. Backed by The Science Hut’s expert support and clear, beginner-friendly instructions.

Soldering iron & wire required. Buy both as a bundle and get 10% off! Click HERE.

Ultimate Guide to Electronics

Video: how to get started with Electronics

Further product information

Your kit includes all the components needed to build and house your ultrasonic proximity sensor. Here’s a snapshot of what you’ll be working with:

Kit Contents:

Printed circuit board (1)
STC89C52RC MCU (1)
40-DIP IC socket (1)
Ultrasonic module HC-SR04 (1)
3-digit 7-segment digital display (1)
12 MHz crystal oscillator (1)
10 µF 25V electrolytic capacitor (1)
22 pF ceramic capacitor (2)
5 mm Red LED (1)
5V active buzzer (1)
4.7 kΩ metal film resistor (6)
1 kΩ metal film resistor (8)
S8550 transistor (4)
Self locking switch (1)
Tactile push-button switch (3)
DC Power socket (1)
3xAA battery box (1)
Acrylic case and fixtures (1 set)
USB to DC cable (1)

Power Options: Can be powered via 3 AA batteries (not included) or USB cable (included). Please use one power source at a time to avoid circuit damage.

Accuracy: approx. 3% (up to 4 meters). Accuracy reduces for distances greater than 4 meters.

Finished product dimensions (approx.):

Length: 95 mm (including sensor)
Width: 77 mm
Depth: 31 mm (including battery pack)

Note: Minor variations in color or style of components may occur but won’t affect functionality.

Age: 12+

Difficulty: Beginner to Intermediate

Time to assemble: 2-4 hours

Young children require adult supervision when soldering

Scientific principles illustrated

Learn Through Doing—Because That’s How Science Sticks

This kit is much more than just a fun project. It's a powerful gateway into the world of electronics and STEM. Here's what you’ll discover as you build and play:

🧪 Core STEM Concepts:

Learn how sound waves can be used to detect how far away an object is.

Understand how a microcontroller calculates and processes inputs to produce outputs.

Get hands-on with building real electronic circuits using resistors, capacitors, transistors, and more.

Explore how data is visualized using 7-segment LED displays.

Discover how efficient hardware design can run complex output systems from minimal input pins.

💪 Practical Skills Developed:

Fine-tuning your motor control and hand–eye coordination.

Learning how to read circuit diagrams and interpret PCB layouts.

Troubleshooting electronic faults—building problem-solving skills.

Learn about safety considerations when working with electronics and soldering best practices.

Whether you're preparing for a school science fair, adding to a home lab, or just having fun with friends or family, this ultrasonic sensor kit delivers a powerful and rewarding STEM experience.

Ships from: International Warehouse

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Great fun to build and play with

Great project for my nephew, it's his 3rd electronics kit from this store, I believe he's hooked :) he has it set up monitoring his computer so whenever anyone gets near it, the alarm sounds and he's up like a shot... he's found a few other uses for it too.

Hi Jennifer, thanks for taking the time to leave a review, we really appreciate it. Delighted to hear how your nephew is enjoying building electronics kits and that he's having fun with the devices when he's finished building them too. The instruction manual has some other suggestions for how he could use his sensor—more ideas to get the creative juices flowing :)

Neat kit

Assembled, everything works. Great fun to build.

Hi Jacinto, thank you for taking the time to review this product, we really appreciate it. Glad to hear that you successfully built the kit and that you had fun doing so :)

Easy to build with my grandson :)

Great! It is clear where to solder. My grandson fell asleep in an hour. I only helped with the body. It works and will even measure if there are no foreign objects in the zone.

Hi Magen, thank you for taking the time to review this kit, we really appreciate it. You're right, the kit will display the distance to the nearest object it can find, so even if there's no objects in your set zone, the unit will still display the distance to objects that are outside your set zone... this way, it can also be used as a digital ultrasonic 'measuring tape'.

Cool gadget

Fun to build and has useful applications

Hi Jason, thanks for taking the time to review your kit, we really appreciate it. We'd love to hear about the applications your using your sensor for? Feel free to share on our social media page (Facebook).

Need instructions for your electronics kit?

Ultrasonic Proximity Sensor Kit

Ultrasonic Proximity Sensor Kit

Soldering iron & wire required. Buy both as a bundle and get 10% off! Click HERE.