Rotary Encoder EC11 Module, 5V, Push Button, Bidirectional Counting, with Knob Cap, for Arduino

Incremental rotary encoder with 5 V supply and 20 pulses per revolution. This encoder detects rotation direction and generates clean digital pulse signals for precise angular position and motion control. Key benefits: - Reliable position feedback for motion control and user interfaces, because the encoder outputs clean, square pulses suitable for direct counting by digital electronics. - Bidirectional counting with push-button reset, so the count can run forward and backward and be reset to zero when the encoder button is pressed. - Stable signal quality under interference, because the reader uses a differential detection method that compares two phase-shifted signals to reduce noise. Main features and specifications: - Supply voltage: 5 V DC. - Output resolution: 20 pulses per revolution. - Direction detection: Counts both clockwise and counterclockwise rotations. - Reset function: Mechanical push button on the encoder resets the count to the initial state (counts from zero). - Signal output: Differential two-channel signals with 180 degree phase shift to enable reliable direction sensing and noise rejection. - Signal conditioning: Photoelectric sensing with photodetector and signal amplification to convert low-level optical signals into stable square pulses. How it works (concise): - The encoder is an incremental rotary sensor that converts angular displacement into a sequence of digital pulses. - A patterned disc with alternating light and dark windows is scanned by an infrared light source and a photodetector array. - The photodetector output is processed by signal conditioning circuitry to amplify and shape the waveform, producing clean square pulses. - Two outputs are produced with a 180 degree phase shift so a controller can determine rotation direction and improve immunity to interference. Compatibility and performance: - Designed for direct interface with microcontrollers, counters, and motor control electronics that accept 5 V logic pulses. - Suitable for systems that require a modest pulse count per revolution for position or speed measurement. - Provides repeatable pulse timing and reliable phase relationships for direction detection. Typical applications: - Industrial controls and CNCs for shaft position monitoring and incremental positioning tasks. - Robotics and automation for joint or wheel rotation sensing and closed loop feedback. - Control panels and user interfaces as a rotary input with push-button reset for menu navigation and parameter adjustment. What makes this encoder stand out: - Simple, standard 5 V interface and a discrete push-button reset make it easy to integrate and operate. - Differential, phase-shifted outputs improve noise immunity and ensure reliable direction detection. - Photoelectric scanning and signal conditioning deliver stable, jitter-free square pulses for accurate counting. This encoder provides dependable incremental position signals, bidirectional counting, and a resettable zero point for a wide range of control and sensing applications.