DFR0382

LED Keypad Shield V1.0 SKU:DFR0382 Introduction The LED Keypad Shield is an Arduino expansion shield with a 4 digit 8 segment digital tube display (common cathode). It has 5 buttons that can be used as menu select buttons or control buttons. It uses I2C to drive the digital tube for an easy user experience. Specification      Arduino compatible Working voltage: 5V 4 digit 8 segment common cathode digital tube (0.56 inch) 5 input buttons (Driving pin: A0) Size: 53 * 54mm/2.05 * 2.12inches Pin Definition PIN Name Analog Pin 0 SCL(A5) SDA(A4) RST Description Button (select, top, right, bottom, left) I2C clock line I2C data line Reset Tutorial Requirements      Hardware DFRduino UNO x1 LED Keypad Shield x1 Software Arduino IDE V1.6.5 Click to Download Arduino IDE from Arduino® Connection Diagram This module's pin alignments allow it to stack directly on top of an Arduino UNO or similar microcontroller Sample Code Please install the following libraries for this code to function. LedKeypad Arduino library About Library installation. #include char brightness =0; char buf[5]="2456"; void setup() { ledkeypad.begin(); /*Enable*/ ledkeypad.setBrightness(0);/*Sets the brightness level*/ ledkeypad.display(2015);/*Display data*/ delay(5000); ledkeypad.display(buf);/*Display character for testing*/ for(int i=0;i '9') buf[0] = '0'; ledkeypad.display(0,buf[0]); break; case KEY_LEFT: buf[1]++; if(buf[1] > '9') buf[1] = '0'; ledkeypad.display(1,buf[1]); break; case KEY_UP: buf[2]++; if(buf[2] > '9') buf[2] = '0'; ledkeypad.display(2,buf[2]); break; case KEY_RIGHT: buf[3]++; if(buf[3] > '9') buf[3] = '0'; ledkeypad.display(3,buf[3]); break; case KEY_SELECT: brightness++; if(brightness > 7) brightness = 0; ledkeypad.setBrightness(brightness); break; default: break; } } Result The sample code is a simple clock for the module. Using the input buttons the time can be adjusted. Key functions are as follows: buttonfunction down The first digital tube +1 left The sencond digital tube +1 up The third digital tube +1 right The fourth digital tube +1 select adjusting brightness                                                    https://www.dfrobot.com/wiki/index.php/LED_Keypad_Shield_V1.0_SKU:DFR0382 8‐23‐18