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Push Button Switch Module KY-004

Push Button Switch Module KY-004

The KY-004 Push Button Switch Module is a compact and reliable electronic component designed to easily integrate push button input into your microcontroller projects. It features a tactile micro switch that activates when pressed, offering a simple method to detect user interaction. With a built-in pull-up resistor, it connects directly to any microcontroller input pin, eliminating the need for external components.

Compatible with all major microcontroller platforms, this module is a versatile solution for various applications such as user interfaces, input detection, or control systems. It's ideal for beginners and professionals alike due to its plug-and-play design and straightforward setup.

Package Includes

  • 1 x KY-004 Push Button Switch Module

Push Button Module
6.30 AED 6.30 AED (Tax included)

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Terms and Conditions
30-day money-back guarantee
Shipping: 2-3 Business Days

 

Specifications

  • Material: FR4
  • Operating Voltage: 5V DC
  • Type: Push Button Key Switch
  • Max Operating Force: 180 / 230 ±20gf
  • Durability: 100,000 cycles
  • Dimensions: 25 x 16 x 10mm
  • Weight: 1.5g

Pin Connections

KY-004 Push Button Module

Pin Description Connection
- Ground Connect to Ground
+5V Positive Power Connect to 5V
S Digital Signal Connect to Digital Input on MCU

Applications

  • User Interfaces: As part of control panels to trigger commands or actions.
  • Sensor Inputs: Detecting physical input from users.
  • Alarm Systems: Acts as an emergency stop or panic button.
  • Robotics: Used for manual control or input in robotic systems.
  • Home Automation: Trigger actions like lighting or door control.

 

Sample Project

Circuit Connections

  • LED + → Pin 13
  • LED - → GND
  • Sensor Signal → Pin 10
  • Sensor +V → 5V
  • Sensor - → GND

KY-004 Circuit Example

Library

No external library is required to use this module.

Example Code

int Led = 13;     // Declaration of the LED output pin
int Sensor = 10;  // Declaration of the sensor input pin
int val;          // Temporary variable

void setup() {
  pinMode(Led, OUTPUT);       // Initialize LED pin
  pinMode(Sensor, INPUT);     // Initialize button pin
  digitalWrite(Sensor, HIGH); // Enable internal pull-up resistor
}

void loop() {
  val = digitalRead(Sensor);  // Read button state
  if (val == HIGH) {
    digitalWrite(Led, LOW);   // LED off if button not pressed
  } else {
    digitalWrite(Led, HIGH);  // LED on if button is pressed
  }
}

Reference