Cheap LED, Batteries and magnets
The problem right now is that 200-300 throwies with cheap LEDs would cost more then $100 if I get the parts at our local electronic store (and that without magnets).
"besthongkong" has 1000 LEDs for $10+$10S/H (=2 cents each) but does anyone know another cheap source with a larger variety and colors of low cost LEDs, maybee even low current ones? Maybee even in Europe?
Second thing: Batteries. Lithium cells are rather pricey at that quantity, and cheap button cells seem to do the job.
I had a couple of 1,6v LEDs on two button cells with diods I had lying arround (voltage drop). It was not very bright but they still glowed a week later.
I had a cheap 12 pack assorted buttoncell blister, and I found
But they seem to have even worse quality ;-) Idd probably have to use three or more and still throw some out.
I remember an experiment using wire and coins, lemon juice or vinigar, which made a LED glow dimly. Any Idea how long before this DIY-Batery runs out?
Third thing: Magnets!
DX has 20 for less then $2. but I guess at that weight I could just magnatize some scrap metal and cut it into pieces.
Thats about a third of the costs even with all the shipping :-)
Anyone here that knows any other good site for LEDs, magnets and such that ship to europe?