### DESCRIPTION

The board have direcit connection to 1602&5110 LCD + NRF24L01 + UART 2106 + bluetooth HC-05 or hc-06.

There are 4 free buttons on the board. The buttons can be jumpered to PC0-PC3 or by wire connected to any other pins. There is also a additional mode when pressing any button causes an additional interrupt int0. (diodes are used)

Int0 and Int1 have. There are separate buttons for interrupts.

Two build-in led can be jumpered to PC4-PC5 or by wire connected to any other pins.

8 pins for i2c. Built-in pull-up resistors can be jumpered.

Have 7805 (d-pack) for 5V and 1117-3.3 for 3.3V. Voltage selected by jumper. (you can plug the power directly into the connector)

Transistors PC817 + 2xBC807 (any other. can be jumpered).

Components on photo

Arduino codes:

1602:

#include <LiquidCrystal.h>

const int rs = 3, en = 4, d4 = 5, d5 = 6, d6 = 7, d7 = 8;

LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

5110:

#include <LCD5110_Basic.h>

LCD5110 myGLCD(9,8,7,5,6);

buttons+leds:

const int button0 = 14;

const int button1 = 15;

const int button2 = 16;

const int button3 = 17;

const int ledPin = 18; 

const int ledPin1 = 19;