KY-036 Metal Touch Sensor Documentation

Operating Voltage

3.3V to 5V DC

Operating Current

20mA

Digital Output

Active Low (0V = Touch Detected, 3.3V = No Touch)

Touch Pin

Can be connected to any conductive metal surface

Sensitivity Adjustment

Onboard potentiometer

Response Time

10ms

Operating Temperature

-20C to 70C

Storage Temperature

-40C to 80C

Dimensions

21mm x 15mm x 6mm

Applications

The KY-036 Metal Touch Sensor is suitable for a wide range of IoT applications, including

Smart Home Automation

Robotics and Mechatronics

Wearable Devices

Industrial Automation

Security Systems

Interactive Art Installations

Conclusion

The KY-036 Metal Touch Sensor is a reliable and versatile component that enables the creation of innovative touch-based interfaces for various IoT applications. Its compact design, low power consumption, and adjustable sensitivity make it an attractive choice for developers and hobbyists alike.

Pin Configuration

KY-036 Metal Touch Sensor Documentation
Pinout Explanation:
The KY-036 Metal Touch Sensor module has 3 pins, which are explained below:
Pin 1: VCC (Power Supply)
Function: Power supply pin for the sensor module
Description: Connect this pin to a positive voltage source (typically 3.3V or 5V) to power the sensor module.
Notes: Make sure to provide a stable voltage supply to ensure proper operation of the sensor.
Pin 2: GND (Ground)
Function: Ground pin for the sensor module
Description: Connect this pin to the ground of the circuit or the negative terminal of the power source.
Notes: A good ground connection is essential for the proper operation of the sensor.
Pin 3: OUT (Output)
Function: Digital output pin of the sensor module
Description: This pin provides a digital output signal (HIGH or LOW) indicating whether the sensor has detected a touch or not.
Notes:
+ When the sensor detects a touch, the output pin goes LOW (0V).
+ When the sensor does not detect a touch, the output pin goes HIGH (VCC level).
+ The output pin can be connected to a microcontroller or other digital circuitry to read the touch detection state.
Connection Structure:
To connect the KY-036 Metal Touch Sensor module to a microcontroller or other circuitry, follow this structure:
VCC pin: Connect to a positive voltage source (e.g., 3.3V or 5V) through a breadboard or PCB.
GND pin: Connect to the ground of the circuit or the negative terminal of the power source through a breadboard or PCB.
OUT pin: Connect to a digital input pin of a microcontroller or other digital circuitry to read the touch detection state.
Example Connection Diagram:
Here's an example connection diagram for connecting the KY-036 Metal Touch Sensor module to an Arduino Uno microcontroller:
VCC pin: Connect to Arduino Uno's 5V pin.
GND pin: Connect to Arduino Uno's GND pin.
OUT pin: Connect to Arduino Uno's digital pin 2 (or any other available digital input pin).
Notes:
Make sure to use a suitable resistor or voltage regulator to step down the voltage to the required level (3.3V or 5V) if your power source is higher.
Use a breadboard or PCB to connect the sensor module to your circuit to prevent damage and ensure reliable connections.
Refer to the datasheet and technical documentation of your microcontroller or other circuitry for specific connection guidelines and pin assignments.

Code Examples

KY-036 Metal Touch Sensor Documentation

Overview

The KY-036 Metal Touch Sensor is a capacitive touch sensor module that detects changes in capacitance when a metal object approaches the sensor. It provides a digital output signal when a touch is detected, making it easy to integrate into various IoT projects.

Technical Specifications

Operating Voltage: 2.5V to 5.5V
 Operating Current: 1mA to 5mA
 Sensitivity: Adjustable
 Output Signal: Digital (TTL compatible)
 Response Time: 10ms to 100ms (adjustable)

Pinout

VCC: Power supply (2.5V to 5.5V)
 GND: Ground
 OUT: Digital output signal

Code Examples

### Example 1: Basic Touch Detection using Arduino

In this example, we will use the KY-036 Metal Touch Sensor to detect touches and turn on an LED when a metal object is detected.

```arduino
const int touchPin = 2;  // Connect OUT pin of KY-036 to digital pin 2
const int ledPin = 13;  // Connect LED to digital pin 13

void setup() {
  pinMode(touchPin, INPUT);
  pinMode(ledPin, OUTPUT);
}

void loop() {
  int touchState = digitalRead(touchPin);
  if (touchState == HIGH) {
    digitalWrite(ledPin, HIGH);
  } else {
    digitalWrite(ledPin, LOW);
  }
  delay(50);
}
```

### Example 2: Touch-Sensitive Button using Raspberry Pi (Python)

In this example, we will use the KY-036 Metal Touch Sensor to create a touch-sensitive button that prints a message when touched.

```python
import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)
touch_pin = 17  # Connect OUT pin of KY-036 to GPIO 17
GPIO.setup(touch_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)

while True:
    if GPIO.input(touch_pin) == 0:
        print("Touch detected!")
        time.sleep(0.5)
```

Note: In both examples, ensure that the KY-036 Metal Touch Sensor is properly connected to the microcontroller or single-board computer, and adjust the sensitivity of the sensor according to your specific requirements.

### Additional Resources

Datasheet: [KY-036 Metal Touch Sensor Datasheet](https://example.com/ky-036-datasheet.pdf)
 Tutorial: [KY-036 Metal Touch Sensor Tutorial](https://example.com/ky-036-tutorial)