New security light mods
Home Julian Rogers Home New security light final program

New security light, some extra features

The circuit below shows some extra features.

1) A potentiometer to adjust something - could be the maximum length of random variation or the length of “on time” at power-up.

2) A switch to bypass the the timer.

3) A function switch which could do something else like change to a different set of on/off times or with a light     sensor (instead of the potentiometer), change to a mode triggered by light level (as in my original design).

(Obviously, apart from the bypass switch, additional programming needed  to make these features work.)

Timer - another variation

Another variation on this theme is described on the next page