i'm a geocacher and i have an idea for a nifty night cache but i'll need a ton of help implementing it. what i'd like to do is send people to specific coordinates in the woods at night and have them shine thier (tv dvd cd vcr etc) ir remote control into a tree where i have an ir reciever that will respond to any button they push by turning on a laser pointer that i have aimed at the cache a hundred or so yards away. Ideally the laser would stay on for three to five minutes to give the cacher time to get to the cache but not so long as to drain batteries or damage the laser. i would need some kinda solar cell to charge up the batteries during the day and maybe a Cds so the receiver and laser will only draw after dark. any help or links would be GREATLY appreciated. gotta have the neatest cache in the area ya know. i'm pretty ham fisted, and not the greatest solderer so any help, no matter how simplistic would be great.
TIA doug