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Touch Sensor Module KY-036

Touch Sensor Module KY-036

The KY-036 Metal Touch Sensor Module is a touch-sensitive electronic component that detects physical contact with a metal surface. It consists of a touch detection circuit, a transistor with an open base, and an operational amplifier (OpAmp) to amplify the signal generated by the touch. When a metal surface is touched, it completes the transistor's circuit, activating the OpAmp and triggering the module's output.

This module features an onboard LED that lights up when a touch is detected, providing visual feedback. It operates at 3.3V to 5.5V and can be easily interfaced with microcontrollers such as Arduino through its VCC, GND, and OUT pins. It's suitable for a variety of interactive, security, and automation applications.

Package Includes

  • 1 x KY-036 Metal Touch Sensor Module

7.35 AED 7.35 AED (Tax included)

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Features

  • Touch-sensitive input
  • Built-in transistor and OpAmp circuitry
  • Adjustable sensitivity
  • Supports analog and digital output
  • Onboard status LEDs

Specifications

  • Model: KY-036
  • Power Supply: 3.3V to 5.5V
  • Sensitivity: Adjustable
  • Output Type: Analog and Digital
  • Dimensions: 34mm x 16mm (L x W)

Pin Connections

Pin Description
Digital Out Goes HIGH when the base of the transistor is touched
Analog Out Analog output based on touch intensity
LED1 Indicates power to the sensor
LED2 Indicates touch detection

Applications

  • Touch-sensitive switch: Use the module to toggle lights or devices on/off with a simple touch.
  • Proximity sensor: Detect the presence of metal objects nearby.
  • Interactive projects: Implement touch-based controls in DIY instruments or games.
  • Security systems: Detect tampering or unauthorized touch (e.g., door handles, safes).
  • Industrial automation: Create touch-sensitive input panels for machines or control systems.

Sample Project

Circuit

To interface the KY-036 with an Arduino:

  • VCC: Connect to Arduino 5V
  • GND: Connect to Arduino GND
  • Digital OUT: Connect to Arduino Digital Pin 8

Also connect an LED to Arduino Pin 13. If using a standard 2.5V LED, include a 330Ω resistor to prevent damage.

KY-036 Circuit Diagram

Library

No external library required.

Sample Code


int led = 13;
int val;
int sensorpin = 9;

void setup() {
  pinMode(led, OUTPUT);
  pinMode(sensorpin, INPUT);
}

void loop() {
  val = digitalRead(sensorpin);
  if (val == HIGH) {
    digitalWrite(led, HIGH);
  } else {
    digitalWrite(led, LOW);
  }
}

 

References