I am using Arduino Duemilanove to communicate with a WiFi Module.
The WiFi Module has a 3.3V TTL interface with RX and TX pins. I am trying to feed the imcoming data (seen on the serial TX pin of the WiFi Module) into the serial RX of my Arduino. My Arduino does not seem to acquire any incoming data. My concern is that Arduino needs to have 5V levels fed onto its RX pin. Should Arduino be able to understand 3.3V levels or do I need to convert the level to something higher?
Thanks for assistance.