Quick Overview
One of the basic interfacing requirements for the hobbyists or electronics enthusiasts is I/P (keypad) and O/P (LCD display) for proyotype applications. This shield uses minimum number I/O’s that is 2 bits(D0 and D1) for LCD data . 5 input key switches (Navigation keys), when it's activated serial data will be sent to pin D0 by internal 2 line LCD controller. Each key has been pulled up to a different voltage level, so a different voltage will be generated every time a user selects a key. This voltage could be read by the analog pin of internal 2 line LCD controller on the board. Hence saves the no of I/O pins. The backlight of the LCD could be controlled by setting PWM (Pin D10) by adding a few lines of code.
Features
- 16X2 Blue color back light LCD.
- LCD and Navigational keys can be interfaced by just 2 lines(D0 and D1 ).
- Optional PWM based Back light control.
- Stackable on UNO shield.
For More Sample Codes & Tutorial CLICK HERE
