I have just bought this bluetooth module from seeed studios
But I am not very confortable with the arduino serial connection pins and would like to hear some advice from you guys before frying my new toy ;D
I am a bit confused specifically with the Arduino RX/TX pins:
1 - can I connect stuff like this module directly into pins 0 and 1 or do I need to make some kind of adapter? resistors perhaps?
2 - since it will share the comm pins used by the onboard FTDI USB chip, will I be able to use the USB port while the module is connected or perhaps some kind of interference will happen? do I need to somehow electrically disable any of them to use the other? do I need to remove the module in order to be able to use the USB connection?
3 - as the module is powered by 3.3v (which is easy to get from the arduino board) will it be a problem from RX/TX pins point of view? can arduino's or FTDI's 5V levels harm the 3.3V module?
Thanks (a lot) in advance, :) Kind regards, Mauricio