Smart Speed Detecting Sensor for Arduino Base at CSR BC04

৳ 150.00

  • Bases at CSR BC04 Bluetooth technology.
  • With build-in 2.4GHz PCB antenna
  • It’s at the Bluetooth class 2 power level.
  • Range test: 10 meters
  • Operating voltage: 3.3V to 6V DC
  • The operating currently in pairing is in the range of 30~40mA.


The Speed Measuring Sensor Groove Coupler Module is a device used to measure the rotational speed of a shaft or axle. It is typically used in combination with an Arduino microcontroller to provide an accurate measurement of speed. The module consists of a sensor, typically a photo-interrupter or a Hall Effect sensor, that is mounted in a coupler, which fits over the shaft or axle to be measured. As the shaft rotates, the sensor detects changes in the light or magnetic field and generates a signal that can be used to calculate the speed of the shaft. This information can then be used in a variety of applications, such as motor control, robotics, or data logging. The Groove Coupler Module is an easy-to-use and affordable solution for measuring rotational speed, making it a popular choice for hobbyists and educational projects.

Product Images are shown for illustrative purposes only and may differ from the actual product.


  • Using imported groove optical coupling sensor, width 5mm.
  • It has the output state light, if the output is high level, the lights are off. if the output is low level, it is on.
  • If it is covered, it will output a high level; otherwise, it output a low level.
  • Good signal and waveform, with a strong driving ability for more than 15mA.
  • Equipped with a fixed bolt hole, easy installation.
  • Use the LM393 wide voltage comparer.
  • The DO output interface can be directly connected to a micro-controller IO port if there is a block detection sensor, such as the speed of the motor encoder can detect.
  • DO modules can be connected to the relay, limit switch, and other functions, it can also with the active buzzer module, compose an alarm.


  • Motor control: Can be used to monitor and control the speed of motors in applications such as robots, automation systems, or hobby projects.
  • Data logging: Can be used to measure and record rotational speed data for analysis and monitoring.
  • Robotics: Can be used to measure and control the speed of robotic actuators and to provide feedback for closed-loop control.
  • Machine control: Can be used in industrial applications to measure and monitor the speed of machinery for process control and maintenance purposes.
  • Education: Can be used in educational projects to demonstrate the principles of rotational speed measurement and control.


Wiring Specification :

  • VCC: The positive 3.3-5 v power supply.
  • GND: Connect power negatively.
  • DO TTL switch signal output.
  • AO: This is an analog output.


General Specification

  • Operating Voltage (VDC) 3.3 ~ 5
  • Length (mm) 32
  • Width (mm) 14
  • Height (mm) 13
  • Weight (gm) 2
  • Shipment Weight 0.005 kg
  • Shipment Dimensions 5 × 4 × 3 cm



  • Power supply voltage: Ensure that the module is powered within the specified voltage range to avoid damage.
  • Shaft size: Ensure that the module is used with a shaft of the correct size to ensure proper coupling and accurate measurement.
  • Interference: Be aware of other devices that may cause electromagnetic interference and avoid operating the module in close proximity to such devices.
  • Installation: Ensure that the module is properly installed and tightened to prevent slippage or damage to the sensor or shaft.
  • Environmental conditions: Ensure that the module is used within its specified operating temperature range and protected from moisture or other environmental conditions that may cause damage or affect performance.


Package Includes:

  • 1 x Smart Speed Detecting Sensor for Arduino




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