5 DB LED gombkészlet Arduino UNO MEGA2560 Pro mini nanohoz, Raspberry Pi Teensy ARM AVR PIC fejlesztői kártyához
5PCS LED Button kit for Arduino UNO MEGA2560 Pro mini nano due Raspberry Pi Teensy ARM AVR PIC Development Board
 
 
Packing list(Does not include Arduiuo UNO):
 
5 PCS  4 button Key Board;
 
5 PCS 6 bit RED LED Board; 
 
Description:
 
Can be inserted directly into Arduiuo uno mega2560 DUE,Ideal for linking up to your UNO Mini Nano Mega2560 etc,or others MCU ( AVR STM32 ARM7 ARM9 ARM10 ARM11 PIC AT89C51 C51 STC MSP430 ALTERA XILINX FPGA CPLD PLD etc.) 
 
key board:  
 
1 4-button Common Cathode key module .
 
2 " GND K1 K2 K3 K4" 4 PIN OUT  2.54mm
 
3 Power Supply Voltage:1.2V-48V
 
4 Size: 12.7MM x 33MM.
 
led board:
   
1 6 bit Red Common Cathode LEDS.
 
2 7 PIN OUT  2.54mm
 
3 1K ohm Limiting resistor 
 
4 Power Supply Voltage: 3.3-12V; 
   
5 Size: 17.78MM x 11.43MM.
 

Circuit schematics : 
 
Arduiuo uno/mega2560 Code
 
//******************************************************//
 /*
Arduiuo_4key_6led
 
This example code is in the public domain.
*/
 
// Define key pin
int K1 = 13;
int K2 = 12;
int K3 = 11;
int K4 = 10;
// Define led pin
int GND = 6;
int D1 = 5;
int D2 = 4;
int D3 = 3;
int D4 = 2;
int D5 = 1;
int D6 = 0;
 
// variables will change:
int buttonState = 0; // variable for reading the pushbutton status
 
 
// the setup routine runs once when you press reset:
void setup() {
// initialize the keys pin as an input.
 
pinMode(K1, INPUT);
pinMode(K2, INPUT);
pinMode(K3, INPUT);
pinMode(K4, INPUT);
 
// initialize the leds pin as an output.
pinMode(GND, OUTPUT);
pinMode(D1, OUTPUT);
pinMode(D2, OUTPUT);
pinMode(D3, OUTPUT);
pinMode(D4, OUTPUT);
pinMode(D5, OUTPUT);
pinMode(D6, OUTPUT);
 
//Activate key pin internal pull-up resistors
digitalWrite(K1, HIGH);
digitalWrite(K2, HIGH);
digitalWrite(K3, HIGH);
digitalWrite(K4, HIGH);
 
 
//as LED GND
digitalWrite(GND, LOW);
}
 
// the loop routine runs over and over again forever:
void loop() {
 
 
buttonState = digitalRead(K1);
digitalWrite(D1, buttonState); //
 
buttonState = digitalRead(K2);
digitalWrite(D2, buttonState); //
 
buttonState = digitalRead(K3);
digitalWrite(D3, buttonState); //
 
buttonState = digitalRead(K4);
digitalWrite(D4, buttonState); //
 
 
digitalWrite(D5, HIGH); // turn the LED on (HIGH is the voltage level)
digitalWrite(D6, HIGH); // turn the LED on (HIGH is the voltage level)
 
 
}
 
    
 //******************************************************//
 
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