{"product_id":"ky-036-metal-touch-sensor-module-digital-output-5v-arduino-compatible","title":"KY-036 Metal Touch Sensor Module – Digital Output, 5V, Arduino Compatible","description":"\u003ch1\u003eKY-036 Metal Touch Sensor Module – Digital Output Touch Switch with Adjustable Sensitivity\u003c\/h1\u003e\n\n\u003cp\u003eThe KY-036 metal touch sensor module provides a clean digital output when the onboard metal pad is touched. It operates from 3.3V to 5V, and an LM393 comparator ensures stable signal transition with no bouncing. Use it as a robust replacement for mechanical buttons in microcontroller projects. The onboard potentiometer allows sensitivity adjustment, and the red LED indicates touch detection instantly.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V–5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eDigital (high when touched, normally low)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard potentiometer (clockwise for higher sensitivity)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Method\u003c\/td\u003e\n\u003ctd\u003eTouch via metal pad, works through up to 3 mm non-conductive layer\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eIndicator\u003c\/td\u003e\n\u003ctd\u003eRed LED lights on touch\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e36 mm × 15 mm × 10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMounting Hole\u003c\/td\u003e\n\u003ctd\u003e3 mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e＜5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-push-button-led-toggle\"\u003eTouch-activated LED lamp – replace a push button with a sleek touch interface hidden behind a panel.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-capacitive-touch-piano\"\u003eArduino piano with touch keys – use several modules as capacitive keys for a custom musical instrument.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eSecret touch latch for cabinets – mount the sensor behind wood or acrylic for a invisible switch.\u003c\/li\u003e\n  \u003cli\u003eKnock or touch-pattern detector – measure touch duration and count pulses to trigger locked actions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eWorks with any 3.3V or 5V microcontroller, including Arduino Uno, Nano, Mega, ESP8266, ESP32, and Raspberry Pi Pico. The digital output can directly interface with a GPIO pin, or drive a small relay module via a transistor. No special libraries are required; just read the pin state.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to a 5V supply, GND to ground, and DO to a digital input pin. The potentiometer sets the touch threshold – turn clockwise to raise sensitivity, testing until the LED reliably lights with a light touch. The output is normally low; it goes high on touch. For long wires, add a 10kΩ pull-down resistor on DO to prevent floating states in noisy environments.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, the KY-036 works directly with Arduino Uno. Connect VCC to 5V, GND to GND, and DO to any digital pin; read the pin state in your code using digitalRead().\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it detect touch through a thin layer of plastic or wood?\u003c\/summary\u003e\u003cp\u003eThe module can detect touch through non-metallic materials up to 3 mm thick, such as acrylic, glass, or wood veneer, as long as the metal pad is not obstructed by a conductive layer.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I adjust the sensitivity?\u003c\/summary\u003e\u003cp\u003eRotate the blue potentiometer clockwise to increase sensitivity until the LED lights up when lightly touched; rotate counterclockwise if false triggers occur in electrically noisy environments.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445020811629,"sku":"CDN-0734","price":40.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_32631138-8af1-419b-af66-2a9c86614156.jpg?v=1781512863","url":"https:\/\/compoden.com\/products\/ky-036-metal-touch-sensor-module-digital-output-5v-arduino-compatible","provider":"Compoden","version":"1.0","type":"link"}