Hmm, I don't think there is such a thing as the "worst" question!
To answer you question, the first version of the eyeR interceptor was basically to intercept/control the fusion brain outputs while the PC/fusionbrain was off.
for example, say one of you FB outputs was connected to a relay and suddenly your PC shutsdown or wont boot up! How can you control this relay with the FB not working? (since it requires the PC to be on for it to function) If you connect one of the eyeR inputs/outputs in series with this connection, you will be able to take control of this relay again with the use of an IR remote or any RS232 interface, since the eyeR does not need a constant PC connection in order to function.
This system can come in very handy for a complete HVAC system which needs to be controlled when the PC fails (say to demist the windows).
Though, initially the first version (FB piggy-back) was specifically designed for HVAC systems, the next model has a host of new features/capabilities such as more dedicated PWM and servo outputs, intercept only mode, direct 2-15v inputs (no need for bias resistors) and a drive-wire bus system which allows countless add-ons to be added.
What are these add-ons?
Well, I don't want to reveal all of them just yet but the one i'm working on now is the RF Transmitter which allows you to have wireless control of mains and 12v devices directly through the FB/eyeR. Just imagine a RF universal remote!
