Hi. I have a project that will be using multiple Arduinos, each communicating via I2C. One of the Arduinos must interface to a Honeywell altimeter, passing the information to all the other Arduinos on the network (one displaying information to the pilot, one outputting the information to an archival device, etc.). A serious problem has arisen in that Honeywell has changed the interface to the altimeter from IEEE-485 to IEEE-1394 (FireWire). Whereas there are an abundance of 485 shields available, I have been unable to find any possible way to interface an Arduino to a FireWire device. Given the current maturity of the design (using an I2C network, displaying information on multiple 7 segment LED displays, multiple thumbwheel switches, etc.) I am committed to using a network of Arduinos for the project. Does anyone know of a way to interface an Arduino directly to FireWire other than using something like a Mac Mini as a middleman between the Arduino and the Honeywell altimeter? I should add that the data throughput rate from the altimeter is very low...nothing remotely close to the video rates FireWire is generally used to handle.