Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital Switching (High/Low) |
| Sensor Type | Slot-Type Optocoupler |
| Slot Width | 5mm |
| Response Time | < 10 microseconds |
| LED Indicator | Yes (Power and Signal) |
| Mounting Hole Diameter | 3mm |
| PCB Dimensions | 32mm x 14mm |
| Interface Pins | VCC, GND, OUT |
| Application | Motor Speed Testing, RPM Counting, Object Detection |
Anonymous
Mar 26, 2026
Rating: 4/5
Great for learning embedded systems
Bought this for a university project on motor control. It helped me understand interrupts and pulse counting easily. The documentation could be slightly better, but there are plenty of online tutorials.
Anonymous
Mar 16, 2026
Rating: 5/5
Robust build quality
Feels sturdy and well-soldered. I've been running it continuously for a week on a test bench without any dropouts or false triggers. Definitely buying more for my next batch of robots.
Anonymous
Mar 11, 2026
Rating: 5/5
Excellent precision
I tested this against a commercial tachometer and the readings were within 1% accuracy. The slot width is perfect for standard interrupter wheels. Fast shipping too.
Anonymous
Mar 09, 2026
Rating: 5/5
Perfect for Arduino motor projects
This module worked flawlessly with my Arduino Uno. The signal is clean and the response time is fast enough for accurate RPM counting on small DC motors. Highly recommended for hobbyists.
Anonymous
Mar 03, 2026
Rating: 5/5
Reliable and easy to use
Plug and play simplicity. The LED indicators make debugging very easy; you can instantly see if the beam is broken. Used it to build a tachometer for my 3D printer fan upgrade.
Anonymous
Mar 02, 2026
Rating: 4/5
Good value, needs stable mounting
The sensor itself is very sensitive and accurate. I deducted one star because the mounting holes are a bit tight, so you need to be careful not to crack the PCB when screwing it down. Otherwise, great product.
Q: What is the maximum speed (RPM) this sensor can accurately measure?
A: Given the response time of less than 10 microseconds, this sensor can theoretically handle hundreds of thousands of pulses per second. For most hobby motors up to 20,000 RPM with a standard interrupter wheel, it will be perfectly accurate.
Q: Is the output signal pull-up or pull-down?
A: The module typically outputs a LOW signal when the slot is blocked and HIGH when clear (or vice versa depending on specific logic design), but it includes an onboard comparator for a clean digital TTL signal suitable for microcontrollers.
Q: Can I use this outdoors?
A: While the component works well, the open-slot design means strong direct sunlight might interfere with the infrared beam. We recommend shielding the sensor from direct ambient light if used outdoors.
Q: Can this module work directly with a Raspberry Pi GPIO?
A: Yes, it works with Raspberry Pi. Since the module operates at 3.3V-5V, you can connect VCC to the 3.3V or 5V pin and the OUT pin directly to a GPIO pin configured as an input.
Q: Does the package include an interrupter wheel?
A: No, this package includes only the sensor module. You will need to provide your own interrupter wheel or a slotted disk to attach to your motor shaft.
UHT Ultra-High Temperature Sterilizer, Room-Temperature Set Yogurt Production Line, Yogurt Processing Equipment, Stirred Yogurt System
$80,640.00
Professional Sketch Blending Kit for Art Students: Gray Tone Pencils, Sponges, Stumps, and Erasers
$4.17
Custom Solid Wood Signboard with Engraved Lettering, Advertising Carved Plaque for Homestays, Tea Rooms, Studios, Wooden Entrance Hanging Sign
$16.90
MOKO Stainless Steel Expandable Dish Drainer - Multi-Function Kitchen Sink Rack for Bowl and Plate Storage
$28.00
WoSporT Factory Direct WST Safety Case 32cm (12.6 inch) - Dustproof, Waterproof, and Impact-Resistant Tool Box
$95.00
South Korea DIO Dental Implant / Implant + Abutment + Crown
$1,580.00
40cm Extended Drill Attachment with Scouring Pad Head for Polishing, Rust Removal, and Marble Countertop Cleaning
$60.00
Authentic Ou Style Tian Kaishu Thousand Character Classic Calligraphy Card for Adult Practice, High-Definition Coated Paper
$55.10
Zer0g Ultra-Light 14g Backpack Waterproof Liner - Polycro Odor-Barrier Pack Liner for Hiking and Trekking
$21.20
Touchmark Liquid Acrylic Markers with Soft Tips, Specialized for Elementary School Art, Ideal Birthday Gift for Children
$18.90
Paper Blending Stump for Sketching - Professional Art Tool with Blade for Highlights, Pastels, and Oil Pastels
$3.74
Wen Zhengming Small Regular Script Love Lotus Essay Brush Tracing Practice Copybook Calligraphy Paper Copying Custom Wholesale for Beginners
$8.80
Heavy-duty Industrial Scouring Pad Roll with Aluminum Oxide for Stainless Steel Polishing and Rust Removal
$57.52
1.06m Leather Slitting Machine – Wide-Range Strip Cutter for Leather, Luggage, and Rubber Materials
$16,250.00
Ceramic Double-Boiler Steaming Bowl with Lid – Ideal for Eggs, Bird's Nest, Custard, and Soup for Home or Commercial Use
$21.11
![[Ya Que You Sheng] DT900 PRO X Calibration File V2 Version EQ Equalization](https://www.gosteppe.com/cache/small/product/269040/legacy-main-a3c0c55ffaafe89c05afced1.webp)
[Ya Que You Sheng] DT900 PRO X Calibration File V2 Version EQ Equalization
$15.00
Ceramic Rabbit Egg Holder, Creative Irregular Egg Stand, Home Breakfast Small Dish, Craft Gift Ornament
$44.78
Hot-Selling Wire Money Tree Bonsai Base – Ceramic Pot for Wealth Attraction Incense
$37.00
Maike Outdoor Sports Waterproof Backpack Wet-Dry Separation Ski Bag Fishing Creek Fins Multi-Function Gear Storage
$152.00
Viral NFC Chip Stickers for Music Wall - Adhesive Read/Write Tags for Song Scanning, Cards, and Photo Frames
$2.38
Rechargeable Generation 2 Personal Air Purifier - Safe Portable Electric Fan for Travel Commuting and Flights
$181.00
Integrated Sink Splash Guard with Silicone Drain Mat - Auto-Draining Countertop Organizer
$23.30
Ultra-Light Aluminum Camping Light Pole – Foldable Mini Lamp Stand for Outdoor Picnics and Tabletop Use
$8.33
bimoz Under-Desk Cable Organizer No-Drill Shelf for Home Office Socket Strip Router Wire Data Cable Fixer Minimalist Wire Winder Dual-Side Mount Ventilated Design
$40.80
Extended Deep-Cut External Thread Tool Holder with Relief Groove for Swiss-Type Lathe HKFF42R6001
$15.50
Meiao Dental Imported Dental Implant Package, Swiss ITI Straumann Implant Abutment, False Teeth, Filling, and Planting
$14,188.00
Assorted Colors Kids' Painting Crayons - Washable Oil Pastels in 12, 18, 24, or 36 Colors for Graffiti and Coloring
$2.47
Fruit and Vegetable Slicer - Stainless Steel Commercial Electric Multi-Function Shredder for Radish, Potato, Cucumber, Pepper, Automatic
$2,880.00
CAAS-Developed Granular Insecticide and Fungicide for Vegetable Gardens – Soil Pest Control and Fertilizer for Enhanced Vegetable Growth and Yield
$13.50
Marie's C6823 Sketch Blending Stumps (3-Pack), Professional Charcoal and Pastel Smudging Tools for Art Students and Beginners, Hard/Small/Highlight Set on Newsprint
$7.48
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
