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
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
| 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
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
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
| 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
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