Just did a quick search on Freaduino. It appears that the form factor is the same as an Arduino Mega2560, so it should work with a standard RAMPs board.
Neither the 3.3V option or the 2A current should have any impact on the RAMPs board, they are more aimed at other uses for the board. For instance, adding 3.3V components or attempting to control servos / motors directly off of the Freaduino's power supply. The RAMPs board has its own powersupply for the stepper motors, hotend, and optional heat bed, plus it relies on traditional 5V logic.
The main difference you might encounter between using the more expensive Freaduino and a cloned Arduino is the overall quality of the board. Though I am not familiar with Freaduino and just use the cheap Arduino clone that came with my printer.
Neither the 3.3V option or the 2A current should have any impact on the RAMPs board, they are more aimed at other uses for the board. For instance, adding 3.3V components or attempting to control servos / motors directly off of the Freaduino's power supply. The RAMPs board has its own powersupply for the stepper motors, hotend, and optional heat bed, plus it relies on traditional 5V logic.
The main difference you might encounter between using the more expensive Freaduino and a cloned Arduino is the overall quality of the board. Though I am not familiar with Freaduino and just use the cheap Arduino clone that came with my printer.
