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Hi and thanks. Actually it is a choice between one or the other. The blue one is the "easy way" with the red one you have to soldering some wires. At the moment with the available mods, you can mount an Arduino Uno, 2009 or mini or a raspberry pi zero or zero w.For the IR project you can use both but
If you use the red motor driver, you have to use the 3A mod, otherwise there is no place for the driver or you can mount the red driver on a breadboard shield and use a 9V battery