{"product_id":"ky-039-finger-heartbeat-heart-rate-detector-for-arduino","title":"KY-039 Finger Heartbeat Pulse Sensor Module for Arduino","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eMonitor your heart rate easily with the KY-039 Finger Heartbeat Sensor Module, designed for Arduino beginners and makers. This non-invasive heart rate detector measures pulse signals by using an infrared LED and phototransistor to sense blood flow changes through your fingertip. Simply connect it to your Arduino UNO board using jumper wires, and visualize real-time heartbeat data through the Serial Monitor or Serial Plotter in the Arduino IDE.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eNon-invasive pulse detection – no direct skin contact required.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eHighly sensitive sensor for accurate heartbeat measurement.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eAnalog signal output that can be read directly by Arduino.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eUses infrared LED and phototransistor for precise detection.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eSimple three-pin interface: VCC (3.3V–5V), GND, and Signal (A0).\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eCompact and easy to integrate into DIY health monitoring projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eConnection Guide:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eConnect\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eGND\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto Arduino\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eGND\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eConnect\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eVCC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto Arduino\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5V\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eConnect\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSignal (S)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto Arduino\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eA0\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003epin.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eHow It Works:\u003c\/strong\u003e\u003cbr\u003eWhen a finger is placed between the infrared LED and phototransistor, changes in blood flow during each heartbeat alter the intensity of transmitted light. The sensor converts this variation into an analog signal that represents your pulse waveform.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e1 x KY-039 Finger Heartbeat Sensor Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Sun Cheong Computer Company Limited","offers":[{"title":"Default Title","offer_id":44498512674967,"sku":"21PS001310","price":146.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0440\/4022\/4919\/files\/diy-heart-rate-sensor-module-hw487-pcb-side.jpg?v=1763011310","url":"https:\/\/scccltd.com\/en-tw\/products\/ky-039-finger-heartbeat-heart-rate-detector-for-arduino","provider":"Sun Cheong Computer Company Limited","version":"1.0","type":"link"}