Hi all, I'm a graphic designer by trade, and I am currently producing some perspex 'display boards' for a client. I thought it could be an eye-catching feature to have the company's logo on one of the boards, illuminate when someone walks past. The LEDs would be situated behind the perspex panel, with the logo in a translucent enough material to allow light to shine through from behind. A motion sensor would need to detect motion, fade the lights up, keep them on for a short while, then fade them down. Ideally, there would also be a switch to turn the lights on, off & allow motion detection. It will need to be battery operated, therefore I'm unsure whether they'd last very long before having to replace them. As you can probably tell, I have no experience in electronics/circuits, but I do have a friend who has studied it who is willing to assemble it all. Basically, my question is, does anybody know the best way to develop such a system? I have about a week & approximately £100/$200 to give anyone who's able to provide expertise to develop it all. Kind regards, Dan (northwest UK).