Rotary – Hamtech Electronics Technologies https://hamtechtechnologies.com Fri, 28 Nov 2025 03:49:23 +0000 en-US hourly 1 https://wordpress.org/?v=7.0.2 https://hamtechtechnologies.com/wp-content/uploads/2025/11/h-100x100.webp Rotary – Hamtech Electronics Technologies https://hamtechtechnologies.com 32 32 Rotary Encoder https://hamtechtechnologies.com/product/rotary-encoder/ https://hamtechtechnologies.com/product/rotary-encoder/#respond Thu, 20 Nov 2025 19:52:03 +0000 https://hamtechtechnologies.com/index.php/product/rotary-encoder/ rotary encoder that detects rotation direction and step count, ideal for menu navigation, motor control, and user interfaces on Arduino and ESP32 projects.]]> The KY-040 Rotary Encoder is a digital knob used to detect rotational movement and direction. Unlike potentiometers, rotary encoders can rotate endlessly, making them perfect for adjusting parameters, navigating menus, or controlling motor speeds without limits.

It provides two out-of-phase signals (A and B), enabling microcontrollers to detect rotation direction and count steps accurately. A push-button is built into the knob, offering an additional input for selecting items or toggling functions.

Widely used in embedded systems, user-interface panels, 3D printers, audio equipment, and robotics.

Key Features

  • 360° continuous rotation

  • Built-in push-button switch

  • Provides direction and step count

  • Stable mechanical detents

  • Ideal for menu navigation and parameter adjustments

  • Easy interface with Arduino, ESP32, ESP8266, Raspberry Pi

Specifications

Feature Details
Encoder Type Incremental mechanical
Operating Voltage 5V
Signals A (CLK), B (DT), Switch (SW), VCC, GND
Steps per Rotation Typically 20 steps
Push Button Integrated, momentary
Shaft Type Knurled metal shaft
Mounting PCB mount module (KY-040)

Applications

  • Menu navigation on LCDs/TFT displays

  • Motor speed control

  • Volume control

  • 3D printer control knobs

  • DIY audio equipment

  • Control panels and dashboards

  • User input for embedded devices

Compatible Boards / Systems

  • Arduino Uno / Nano / Mega

  • ESP32 / ESP8266

  • Raspberry Pi

  • STM32, MicroPython boards

  • Any microcontroller with digital interrupts

]]> https://hamtechtechnologies.com/product/rotary-encoder/feed/ 0