Arduino Shield keyboards and displays

Information visualization for the user can be implemented in electronic devices in different ways. Among them the most popular are the displays 7-segment, LED, indicators and displays, LCD (LCD), which have the greatest possibilities of visualization of information using letters, numbers, punctuation marks, special characters and various graphic symbols. Thinking about the simplicity of the design of Your devices, we prepared a proposal of imposing Arduino Shield equipped with programmable LCD display and keypad buttons.


Voltage to
Voltage from
UC - Microkontroler
UC - Flash:
UC - Digital pins:
Voltage output from
Output voltage to
UC - freq:
UC - Core
UC - Ethernet:
UC - WiFi:
UC - Bluetooth
UC - I2C
UC - SPI interface
UC - CAN interface
UC - C/A
UC - A/C:
UC - analog in
UC - microSD

How to use a pad with an LCD display and keypad for Arduino?

In the basic version LCD display, built-in Arduino Shield consists of two lines of 16 characters. The maximum we can on this display to view information, consisting of 32 characters. Using the display easily thanks to the free library of Arduino “LiquidCrystal”. With just a dozen lines of code will allow You to create a menu processing machines (for example,) with the ability to navigate with the keyboard a two-button, also the set lining. Keyboard the keyboard communicates with the Arduino through a divider rezystorowy connected to one of the inputs of the Converter analog to digital. Each button of the keyboard is detected through the value of the voltage supplied to the analog input of the microcontroller.

What are the conditions of supply must be made for Arduino Shieldów display on Board?

Pad Arduino Shield with an LCD display and keypad, buttons and requires a supply voltage of 5 V, which will ensure that the screen backlight and contrast, thereby facilitating reading of the information. Because while you power the Arduino with a voltage supplied via the USB port, you may experience fluctuations that will occur przygasaniem symbols on the display or appearance barely visible rectangular fields on their website, is to use an external stabilized power supply CONSTANT current with a voltage of 7 V or 9 V, plug diameter 2.1 mm internal component It is compatible with the power connector on the Arduino Board.