LCD Keypad shield

The LCD keypad shield for Arduino, DFRobot v. 1.1 http://www.dfrobot.com/wiki/index.php?title=Arduino_LCD_KeyPad_Shield_(SKU:_DFR0009) Thanks to Matt Ewing for designing (and letting me use) the tactile switch in the assembly. See his assembly here: http://grabcad.com/library/tactile-switch-short-1 There is no proper datasheet for the shield, so all measurements are made by me. No guaranties for the accuracy, but it should be fairly precise. (the lcd is designed from datasheet measurements and can be downloaded separately here: http://grabcad.com/library/16x2-character-lcd-display-1).