SainSmart Mega2560 R3:
*1.0 pinout: added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board. In future, shields will be compatible both with the board that use the AVR, which operate with 5V and with the Arduino Due that operate with 3.3V. The second one is a not connected pin, that is reserved for future purposes.
*Stronger RESET circuit.
*Atmega 16U2 replace the 8U2
The SainSmart Prototype Shield is a great kit to new users and geeks who have sparkling ideas. You can choose to do soldering in the soldering area. You can also make good use of the mini breadboard which can save your time of soldering. Try any circuit you want to the Arduino. You also can choose to use your own breadboard.
SainSmart 1602 LCD Keypad Shield:
*This is a 16x2 LCD Keypad module for Diecimila Duemilanove, UNO, MEGA1280, MEGA2560 board.
*Blue Backlight with white words, adjustable backlighting.
*4 Bit LCD Library
*100% brand new and high quality