I bought a WRL-13678 wifi module, but when I connect it to a 3.3V power source, the blue LED flashes once, then nothing happens.
I tried powering it from a 3.3V breadboard power supply (connected to a 9V DC adapter). The same happens if I connect it to my Arduino 3.3V rail.
I checked the Arduino serial monitor and nothing is coming over the wire.
Is the module DOA, did I fry it somehow, or am I doing something else wrong?