DFRobotArduino Shields User Manual

Arduino Shields Manual
2010
- 8 -
Arduino LCD&KeyPad Shield
(SKU: DFR0009)
Introduction
The LCD Keypad shield is developed for Arduino compatible boards, to provide a user-friendly
interface that allows users to go through the menu, make selections etc. It consists of a 1602 white
character blue backlight LCD. The keypad consists of 5 keys — select, up, right, down and left. To
save the digital IO pins, the keypad interface uses only one ADC channel. The key value is read
through a 5 stage voltage divider.
Diagram
Figure 3 LCD&Keypad Shield Diagram