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LCD1602 Keypad Shield – 16x2 LCD Display Module with Button Interface

K-TECHNICS
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KSh600.00

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The LCD1602 Keypad Shield is an all-in-one user interface expansion board designed primarily for Arduino Uno, Mega, and compatible microcontrollers. It integrates a 16x2 character LCD screen with a 5-button navigation keypad and a reset button. This configuration allows you to quickly build standalone projects with menus, real-time data readouts, and configuration dashboards without dealing with a mess of jumper wires. 
Hardware Overview
  • 16x2 Character Display: Built around the standard ⁠HD44780 controller. It displays 2 lines of 16 characters each. It usually features a bright blue backlight with crisp white text. 
  • Contrast Potentiometer: A small trimpot (usually located in the upper-left corner) used to adjust the screen contrast so the text is cleanly visible. 
  • 5-Button Voltage Divider: To save valuable I/O pins, the Select, Left, Up, Down, and Right buttons are wired into a multi-stage resistor voltage divider. This allows the microcontroller to read all 5 navigation keys using just a single analog pin by measuring different voltage levels. 
  • Reset Button: A dedicated button wired directly to the Arduino's RST pin to safely restart your sketch.

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