KY-004 Button-module
KY-004 Button-module
Contents 1 Picture . 1 2 Technical data / Short description . . . . 1 3 Pinout . . . 2 4 Code example Arduino . . 2 5 Code example Raspberry Pi . . . . 3
Picture
Technical data / Short description
By pressing the button, the signal circuit is switched.
Export: 16. 06. 2017
Copyright by Joy-IT - Published under CC BY-NC-SA 3. 0
Page 22 of 214
KY-004 Button-module
Pinout
Code example Arduino
This example will light up a LED after the button is pressed. The module KY-011, KY-016 or KY-029 can be used as a LED.
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) ; // Initialization output pin pinMode (Sensor, INPUT) ; // Initialization sensor pin digitalWrite(Sensor, HIGH); // Activating internal pull-up resistor } void loop () { val = digitalRead (Sensor) ; // The current signal at the sensor will be read if (val == HIGH) // If a signal was detected, the LED will light up. {
digitalWrite (Led, LOW); } else {
digitalWrite (Led, HIGH); } }
Connections Arduino:
LED + LED Sensor Signal
= [Pin 13] = [Pin GND] = [Pin 10]
Export: 16. 06. 2017
Copyright by Joy-IT - Published under CC BY-NC-SA 3. 0
Page 23 of 214
KY-004 Button-module
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KY-004 PDF File
