{"id":368,"date":"2025-11-20T19:52:03","date_gmt":"2025-11-20T19:52:03","guid":{"rendered":"https:\/\/hamtechtechnologies.com\/index.php\/product\/rotary-encoder\/"},"modified":"2025-11-28T03:49:23","modified_gmt":"2025-11-28T03:49:23","slug":"rotary-encoder","status":"publish","type":"product","link":"https:\/\/hamtechtechnologies.com\/index.php\/product\/rotary-encoder\/","title":{"rendered":"Rotary Encoder"},"content":{"rendered":"

The KY-040 Rotary Encoder<\/strong> 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.<\/p>\n

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.<\/p>\n

Widely used in embedded systems, user-interface panels, 3D printers, audio equipment, and robotics.<\/p>\n

\n

Key Features<\/strong><\/h3>\n
    \n
  • \n

    360\u00b0 continuous rotation<\/p>\n<\/li>\n

  • \n

    Built-in push-button switch<\/p>\n<\/li>\n

  • \n

    Provides direction and step count<\/p>\n<\/li>\n

  • \n

    Stable mechanical detents<\/p>\n<\/li>\n

  • \n

    Ideal for menu navigation and parameter adjustments<\/p>\n<\/li>\n

  • \n

    Easy interface with Arduino, ESP32, ESP8266, Raspberry Pi<\/p>\n<\/li>\n<\/ul>\n

    \n

    Specifications<\/strong><\/h3>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n
    Feature<\/th>\nDetails<\/th>\n<\/tr>\n<\/thead>\n
    Encoder Type<\/td>\nIncremental mechanical<\/td>\n<\/tr>\n
    Operating Voltage<\/td>\n5V<\/td>\n<\/tr>\n
    Signals<\/td>\nA (CLK), B (DT), Switch (SW), VCC, GND<\/td>\n<\/tr>\n
    Steps per Rotation<\/td>\nTypically 20 steps<\/td>\n<\/tr>\n
    Push Button<\/td>\nIntegrated, momentary<\/td>\n<\/tr>\n
    Shaft Type<\/td>\nKnurled metal shaft<\/td>\n<\/tr>\n
    Mounting<\/td>\nPCB mount module (KY-040)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Applications<\/strong><\/h3>\n
      \n
    • \n

      Menu navigation on LCDs\/TFT displays<\/p>\n<\/li>\n

    • \n

      Motor speed control<\/p>\n<\/li>\n

    • \n

      Volume control<\/p>\n<\/li>\n

    • \n

      3D printer control knobs<\/p>\n<\/li>\n

    • \n

      DIY audio equipment<\/p>\n<\/li>\n

    • \n

      Control panels and dashboards<\/p>\n<\/li>\n

    • \n

      User input for embedded devices<\/p>\n<\/li>\n<\/ul>\n

      \n

      Compatible Boards \/ Systems<\/strong><\/h3>\n
        \n
      • \n

        Arduino Uno \/ Nano \/ Mega<\/p>\n<\/li>\n

      • \n

        ESP32 \/ ESP8266<\/p>\n<\/li>\n

      • \n

        Raspberry Pi<\/p>\n<\/li>\n

      • \n

        STM32, MicroPython boards<\/p>\n<\/li>\n

      • \n

        Any microcontroller with digital interrupts<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

        A mechanical rotary encoder<\/strong> that detects rotation direction and step count, ideal for menu navigation, motor control, and user interfaces on Arduino and ESP32 projects.<\/p>\n","protected":false},"featured_media":461,"comment_status":"open","ping_status":"closed","template":"","meta":{"postBodyCss":"","postBodyMargin":[],"postBodyPadding":[],"postBodyBackground":{"backgroundType":"classic","gradient":""}},"product_brand":[],"product_cat":[353,363,356],"product_tag":[319,318],"class_list":{"0":"post-368","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-accessories","7":"product_cat-electronics","8":"product_cat-electronics-components","9":"product_tag-encoder","10":"product_tag-rotary","12":"first","13":"instock","14":"taxable","15":"shipping-taxable","16":"purchasable","17":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product\/368","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/comments?post=368"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/media\/461"}],"wp:attachment":[{"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/media?parent=368"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=368"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=368"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}