SKU: SENS-3325
📋 GST Invoice Available

HC-020K Double Speed Measuring Sensor Module w/ 20-Line Encoder Disc

₹114.00 (Inclusive of all taxes)
Out of Stock

The HC-020K is an optical encoder sensor module providing dual-channel TTL output for precise speed, position, and direction measurement of rotating shafts. It operates at 5V DC and is compatible with Arduino, Raspberry Pi, ESP32, and other microcontrollers for robotics and motor control applications.

Features

  • Optical infrared photoelectric encoder with 20-line disc for 0.01mm resolution.
  • Dual-channel (A & B) TTL output enables quadrature encoding for direction detection.
  • High-speed measurement capability up to 100kHz frequency for stable performance.
  • Compact module design with 4.5-5.5V DC operating voltage and low power consumption.
  • Includes 24mm encoder disc and Jumper wires for immediate integration.

Out of stock

Description

The HC-020K Double Speed Measuring Sensor Module utilizes an infrared LED and phototransistor pair to detect interruptions in light caused by a rotating slotted encoder disc. This optical principle generates clean, digital TTL pulses corresponding to shaft movement, enabling precise calculation of rotational speed and position.

Its dual-channel quadrature output (Channels A and B) provides a phase-shifted signal pair, allowing embedded systems and PLCs to determine both the magnitude and direction of rotation. The module’s 100kHz maximum measurement frequency ensures reliable data capture even in high-speed motor control, CNC spindle feedback, and conveyor belt monitoring scenarios.

Key Features

  • Infrared photoelectric sensing for non-contact, wear-free operation.
  • Quadrature-encoded dual TTL outputs for bidirectional rotation detection.
  • High-resolution 20-line encoder disc enables precise positional feedback.
  • Optimized for 5V logic systems with straightforward three-wire interface (VCC, GND, A/B outputs).
  • Compact and durable PCB construction suitable for integration into tight spaces.
  • Low forward current requirement for the IR LED enhances energy efficiency.

Applications

  • Precision motor speed and position feedback in robotics and CNC systems.
  • Conveyor belt speed monitoring and synchronization in industrial automation.
  • Directional control and odometry in mobile robot platforms and drones.
  • Educational projects for demonstrating rotary encoding and closed-loop control principles.
  • Spindle RPM measurement and tachometer applications in machinery.

Technical Specifications

Product TypeOptical Speed Measuring Sensor Module
Sensor TypeInfrared Photoelectric Encoder
Operating Voltage4.5V–5.5V DC
Forward Voltage (IR LED)1.6V
Output SignalDual Channel A & B TTL Level
Encoder Resolution20 Lines
Measurement Resolution0.01mm
Maximum Measurement Frequency100kHz
Encoder Disc Size24mm OD, 4mm ID

Frequently Asked Questions

What is the operating voltage range for the HC-020K sensor module?

The HC-020K module requires a DC supply voltage between 4.5V and 5.5V. It is designed for standard 5V logic systems commonly used with Arduino, Raspberry Pi, ESP32, and other microcontrollers. Ensure your power source is stable within this range for reliable TTL output signal generation.

How do the dual-channel A and B outputs work for direction detection?

The module provides two TTL output channels, A and B, which are phase-shifted (quadrature encoded). By monitoring the sequence of pulses (which channel leads the other), your microcontroller can determine the direction of rotation. This standard quadrature method allows for precise bidirectional speed and position tracking.

What is the maximum rotational speed this sensor can measure?

With a maximum measurement frequency of 100kHz and a 20-line encoder disc, the sensor can accurately track high rotational speeds. The exact maximum RPM depends on your counting method, but the 100kHz limit ensures stable performance for most high-speed motor and industrial automation applications.

Is the included encoder disc compatible with different shaft sizes?

The included encoder disc has a 4mm inner diameter (ID). For shafts of different diameters, you may need an adapter or a custom disc. The 24mm outer diameter (OD) and 20-line pattern are fixed, but the mounting hub can be modified or replaced to fit your specific shaft requirements.

Package Includes

  • 1 x HC-020K Double Speed Measuring Sensor Module
  • 1 x 20-Line Encoder Disc (24mm OD, 4mm ID)
  • 3 x Pin Jumper Wires

Additional Information

Weight 0.007 kg
Dimensions 7 × 5 × 2 cm