Introduction: Infrared Matrix Password Input System With Arduino

By ICStation.com
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ICStation team introduce you the Infrared Matrix Password Input System based on ICStation Compatible Board Arduino. It works under the DC 5v power supply, and uses the 4 *4 Matrix Keyboard or the infrared remote control to input the password, and uses the LCD1602 to display the characters which the correct password and wrong password corresponding. This system is very easy to made with low cost and has strong security. What’s more, it can be used in the special situations which normal humans should not close to, such the High radiation zone, the High infection area and so on.

Functions:
1) Uses the 4 *4 Matrix Keyboard to input the password and uses the LCD1602 to display the result. When the password is right, the LCD1602 will display “Success!”. When the password is wrong, the LCD1602 will display “welcome”.

2)Uses the infrared remote control to input the password and used the LCD1602 to display the result. When the password is correct, the LCD1602 will display “Success!”. When the password is wrong, the LCD1602 will display “welcome”.

Code for reference:

http://www.icstation.com/newsletter/eMarketing/Infrared_Possword Code.zip

Step 1: Component List:

1.1×ICStation ATMEGA2560 Mega2560 R3 Board Compatible Arduino

2.1×Bread board

3.1×10K RM103 Blue White Resistance Adjustable Resistor

4.1×1602A HD44780 Character LCD Display Module LCM Blue Backlight

5.1×4 *4 Matrix Keyboard

6.1× Infrared Remote Control Module

7.15× Jumpers

8.15×Dupont Line

9.1×5v Power Supply

Step 2: Schematic Diagram

Step 3: Connect the 5v Power Supply and the GND of the ICStation Mega2560 to the Bread Board.

The red line is for the power supply, the black is for the GND.

Step 4: Divide These 16 Pins

Step 5: Soldering the Pins to the LCD1602

Step 6: Connect the LCD1602 to the Bread Board.

Step 7: Connect the Anode and Cathode of the LCD1602 to the Common Anode and Cathode

Step 8: Place the Adjustable Resistor

Pin 1-anode, Pin3-cathode, pin2-pin3(LCD1602)

Step 9: Connect the Pin5 of the LCD1602 to the GND

Step 10: Connect the 1602LCD to the ICStation Mega2560.


The Pin4(1602LCD)-The Pin12(ICStation Mega2560)

The Pin6(1602LCD)-The Pin11(ICStation Mega2560)

The Pin14(LCD1602)-The Pin5(ICStation Mega2560)

The Pon13(LCD1602)-The Pin4(ICStation Mega2560)

The Pon12(LCD1602)-The Pin3(ICStation Mega2560)
The Pon11(LCD1602)-The Pin2(ICStation Mega2560)

Step 11: Connect the 4 *4 Matrix Keyboard to the ICStation Mega2560

Step 12: Connect the Infrared Remote Control Module to the Pin7of the ICStation Mega2560, the GND and the Anode

Step 13: Video to Show Effect