Arduino LCD KeyPad Shield (SKU: DFR0009) Datasheet

The write up explains the pinout and working details of the LCD module "Arduino LCD KeyPad Shield (SKU: DFR0009)" which is specifically manufactured for offering a quick plug-in compatibility for all Arduino based applications which may require displaying a particular parameter in digits, such as temperature, speed, time, weight etc.

Arduino LCD KeyPad Shield (SKU: DFR0009)

The LCD Keypad Shield is specifically created for working uniquely with Arduino boards, with a mission to allow a hassle-free and user-friendly interfacing operations for the users.

With this module users can now get well versed with the menu, and choose the variants as per their specific application conditions and desirability.

The Arduino LCD KeyPad Shield (SKU: DFR0009) module is designed with 1602 white digital characters, over a bright blue backlight Liquid crystal display panel.

It features a keypad with 5 keys, configured to deliver exclusive functions such as select, up, right, down, and left.

The module includes a digital IO (input/output) saving ability through a single analogue to digital converter or ADC channel.

The key pressing command is identified internally via a 5-stage potential divider network.

The explained Arduino LCD KeyPad Shield (SKU: DFR0009)  LCD module has become pretty popular due to its easy compatibility with Arduino boards.

The display is made up of 2 by 16 LCD slots, assisted with 6 push to ON switches. Pin#4,5,6,7,8,9 and 10 work together for interfacing with an Arduino board.

The analogue pin#0 is assigned to scan the push button commands.

The module features an attached contrast adjustment control, and a back light ON/OFF option button.

The system also offers an expandable analogue pinouts for an hassle-free analogue sensor readability and presentation.

More details are enclosed HERE

Image courtesy: https://www.dfrobot.com/wiki/index.php?title=File:DSC0410.jpg

The Main Features Included in a Arduino LCD KeyPad Shield (SKU: DFR0009) are:

• Operating Voltage: 5V
• 5 Push-to-ON buttons for toggling a custom menu panel for the intended selections.
• RST button offers resetting of the concerned arduino program
• Integrate a potentiometer for adjusting the back light
• Available I/O pins are expandable
• Analog Pinout expandable using standard DFRobot configuration for an enhanced sensor extension
• Ideally suited Dimension: 80 x 58 mm

Library Explanation

Function Explanation

LiquidCrystal(rs, enable, d4, d5, d6, d7)

Generates a variable alternative of Liquid Crystal. The display screen can be commanded by means of the 4 or 8 data lines. If the first, pin numbers for d0 to d3 may be eliminated and maintain the relevant lines unused.

The RW pinout may be recommended to be connected with the ground rather than connecting to a pin over the Arduino board; in such a case, you may want to eliminate it from this function's parameters.

You may consider the following example for the same:

LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

lcd.begin(cols, rows)

Triggers the interfacing of the LCD screen display, and assigns the
dimensions (width and height) to the display reading. begin() demands to be called prior to any different LCD library prompt, as an example:

lcd.begin(16, 2);

lcd.setCursor(col,row)

Fixes the location wherein the following inputs written to the LCD may become visible, for instance:

lcd.setCursor(0,0);

lcd.print(data)

Prints text for the LCD display, for example:

lcd.print("hello, world!");

lcd.write(data)

Writes a character for the LCD screen.

Example

The following example examines the LCD panel and the featured buttons. As soon as the user presses
the button over the shield，the screen instantly illuminates the relevant prompts.

Connection details: Simply Plug-in the LCD Keypad to the Arduino  board such as an UNO (or any similar controllers)