A
Anonymous
Apr 08, 2026
Rating: 5/5
Fast delivery
Module arrived well packaged and works immediately out of the box. Recommended.
Description
Speed Sensor Module Counter Module 22 Years Focused on Components
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Digital Switching Output |
| Slot Width | 3mm |
| Operating Current | 15mA (Typical) |
| Output Signal | TTL Level |
| PCB Dimensions | 32mm x 14mm |
| Mounting Hole Diameter | 3mm |
| Operating Temperature | -25°C to +70°C |
| Interface Type | 3-Pin Header (VCC, GND, OUT) |
| Package Weight | 5g |
5 reviews
A
Anonymous
Mar 08, 2026
Rating: 4/5
Good value
Works well but instructions could be clearer. Had to look up a diagram online.
A
Anonymous
Feb 21, 2026
Rating: 5/5
Perfect for RPM measurement
Used this with an Arduino Uno to measure motor speed. Very stable readings and easy to wire up.
A
Anonymous
Feb 18, 2026
Rating: 3/5
Slot is narrow
Had to print a custom disk to fit the 3mm slot properly. Otherwise functions as expected.
A
Anonymous
Jan 19, 2026
Rating: 5/5
Accurate counting
Tested up to 5000 RPM without missing pulses. Great for robotics projects.
5 FAQ
Q: What is the response time?
A: The typical response time is suitable for most motor testing applications up to several kHz.
Q: Can I use this for water flow?
A: Only if paired with a mechanical flow meter that converts flow to rotation. The sensor itself is optical.
Q: Is a pull-up resistor needed?
A: It depends on your microcontroller. Most Arduino boards have internal pull-ups you can enable.
Q: What is the max frequency?
A: Approximately 10kHz, but this varies based on the object passing through the slot.
Q: Does this work with 3.3V logic?
A: Yes, this module supports operating voltages between 3.3V and 5V DC.
![[Corrosion-Resistant] DFRobot Capacitive Soil Moisture Sensor Module Dry/Wet Detection](https://www.gosteppe.com/cache/medium/product/3259/legacy-main-2f0d3454b36b32391d263648.webp)
![[Folded Booklet] Liu Chunlin: Palace Examination Essay Final Zhuangyuan Small Regular Script Calligraphy Copybook Original Size Long Scroll](https://www.gosteppe.com/cache/small/product/269742/legacy-main-81360b2f385dab43c5030767.webp)
