John, that's what I have been doing which is why I have soooooo many.
And Adriatic, those are good suggestions, but these LEDs are very big. They are replacements for car lamps and the ones I bought have 2 bottom terminals (probably for turn signals or brake lights).
And one more for Stan. My across the track IR detector works fine. I remember you explaining to me the use of an electrolytic cap in the trigger circuit. I bought 10 100uf/50v cap's some time ago, but I don't know which lead goes to +. One lead is longer than the other and the short lead has a gray stripe with a little black rectangle in the stripe. Also, if I want to increase capacitance, can I do that by putting them in parallel or series, and can I reduce capacitance by the reverse?
