แบบฝึกหัดที่ 6




#include "LedControl.h"
#include "Keypad.h"
char keys[4][4]={
  {'7','8','9','A'},
  {'4','5','6','B'},
  {'1','2','3','C'},
  {'E','0','F','D'}};
byte rowPins[] = {7,6,5,4};
byte colPins[] = {3,2,1,0};
Keypad keypad = Keypad(makeKeymap(keys),rowPins,colPins,4,4);
LedControl lc=LedControl(8,10,9,1);
// Pin 8->DIN, 10->CLK, 9->CS(LOAD), 1 = No.of devices
void setup()
{
  lc.shutdown(0,false);
  lc.setIntensity(0,5);
  lc.clearDisplay(0);   
}
void loop()
{
  char key = keypad.getKey();
  if (key != NO_KEY)
  {
    lc.setChar(0,0,key,false);
  }
}



ความคิดเห็น

แสดงความคิดเห็น

โพสต์ยอดนิยมจากบล็อกนี้

7 Segment Display Interfacing with PIC Microcontroller

รูปภาพ
7 Segment Display Interfacing with PIC Microcontroller EMBEDDED 12 7 Segment Display Interfacing with PIC Microcontroller This is our 8th tutorial of  Learning PIC microcontrollers using MPLAB and XC8 . We have come up all the way from  installing MPLABX  to using a LCD with PIC MCU. If you are new here, then look at previous tutorials where you can  learn timers ,  blinking LED ,  interfacing LCD  etc.. You can find all our  PIC Tutorials here . In our last tutorial we saw how we can generate  Custom characters with our 16*2 LCD display , now let us equip our self with another type of display module called the  7-segment display and interface it with PIC Microcontroller . Although  16x2 LCD  is much more comfortable than 7-segment display but there are few scenarios where a 7-segment display would come in handier than a LCD display. LCD suffers from the drawback of having low character size and will ...
อ่านเพิ่มเติม

arduino Project (อ้างอิง : https://www.prometec.net/control-acceso-clave/)

รูปภาพ
CONTROL DE ACCESO CON CLAVE ALFANUMERICA Conmutadores de corriente alterna a 220V. Presentar un interruptor inalámbrico de 4 vías. Ver un caso práctico, de cómo conmutar varios dispositivos de 220V. MATERIAL REQUERIDO.    Arduino UNO o equivalente . Teclado matricial 4×4 Un display  LCD, de 16×2  o  LCD 20×4 , I2C. Resistencias  de: 1 x 100 Ohm, 1/4W  para el buzzer 2 x 330 Ohm, 1/4W para los LEDs Un  LED rojo y otro Verde . Una  Protoboard  . Algunos cables de protoboard, preferiblemente  Dupont macho/hembra . Fuente de alimentación externa 5V  Buzzer pasivo SIMULANDO UN ACCESO CON CLAVE AUN LOCAL No es raro que de una forma u otra acabemos encontrandonos con la necesidad de montar un sistema de control que nos permita activar algo, una cerradura por ejemplo, mediante un codigo numerico tecleado en un keypad a modo de clave de control de acceso. Y como estoy seguro...
อ่านเพิ่มเติม

Digital Thermometer using LM35 and PIC Microcontroller

รูปภาพ
Digital Thermometer using LM35 and PIC Microcontroller EMBEDDED By Pankaj Khatri   May 14, 2018 4 Digital Thermometer using LM35 and PIC microcontroller In this tutorial, we are making a  Digital Thermometer using PIC microcontroller and LM35 Temperature Sensor . In this project, we will sense the temperature using LM35 and display it on  16x2 LCD . LM35 Temperature Sensor is accurate and cheaper and doesn’t require any external calibration. The output voltage is proportional to Celsius temperature scale and changes by 10mV per °C. Material Required PicKit 3 LM35 Temperature Sensor 16*2 LCD PIC16F877A IC 40 - Pin IC holder Perf board 20 MHz Crystal OSC Female and Male Bergstick pins 33pf Capacitor - 2Nos, 100uf and 10uf cap. 680 ohm, 220 ohm, 10K and 560ohm Resistor Potentiometer 10k LED of any color 1 Soldering kit IC 7805 12V Adapter Connecting wires Breadboard LM35 Temperature Sensor: LM35 temperature sensor ...
อ่านเพิ่มเติม