The shield provides a simple solution for a universal I/O (input/output) for the Arduino boards, including the Uno, Leonardo, and Mega2560. It features many useful subsections, including 7-segment displays, pushbuttons, LEDs, and more.

Specifications:

• Four LEDs
• Three pushbuttons
• A reset button
• A piezo-buzzer
• An LED display module (four-digit, seven-segment)
• Two serial LED display driver ICs(74HC595)
• A multi-turn trimpot (10K)
• A port for DS18B20 temperature sensor
• A port for TSOP1838 infrared receiver module
• A APC220 wireless module interface (serial/UART interface)

Cautionary Advice

It seemed that most multifunction shields don’t have pins of the seven-segment LED display module trimmed sufficiently. They will likely come into contact with the top of Arduino’s USB connector. A piece of tape over the LED display pins is necessary to clear that issue.