This is the best robot control shield for Arduino. It can be used for Arduino NANO and MICRO. You can use all features of your Arduino board, it does not make any restrictions, in contrast, the KAI board has extra features for demands of your projects. There are 11 digital-analog pins, 1 Bluetooth pin, 3 buttons, 7 segment led display, 2 channel full-bridge motor driver(4A per channel) and 1A 5v voltage regulator on the KAI board. It successfully passed all the tests. (short circuit, high amperage, reverse voltage, durability). We have prepared KAI.h for KAI board. Using KAI card is very easy with KAI.h library.