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How to construct a timing circuit for a LED lighting circuit.? Answered

I am new to electronics but a quick learner. I have a dark path that I want to illuminate for about 2 to 3 minutes using a commercial LED light. It is too far to run a 120V line, so I am hoping to use a 3 - Volt Lithium battery connected to a timer that will shut-off the light automatically. I cannot use a motion sensor as the path is lined with trees that would set it off during windy sessions.
I am hoping to be able to push a normally off button, have the LED bulb illuminate and, after I have walked past the darkened area (2 to 3 minutes) automatically turn off, I need two units, one at each end. Also, can I adapt the lighting system to solar power? I really don't want to replace batteries often.
Can anyone help me. I can solder, follow a diagram and instructions. I will enclose the unit and make it as maintenance free as possible. If my choice of battery power is wrong, please advise me on any improvements. If  there is a commercial timer available please let me where I can buy it incase it's too much for me to build.
Thank you.




8 years ago

This is similar to what i am trying to work out. I need to wire up a system that would power a strip of 12v leds in the rear section of our ute. possibly a momentary push button, and the leds would turn on for maybe 3 mins, then automatically turn back off again???

If something like this would work, can you possibly give me some advice??




9 years ago

i don't think 1 led w9ill s3uffice. you 9will need about 10 for each unit. a mono3stable 1 s3hot 555 timer w9ill w9ork ju3st fine here is3 a schmatic that i've made

s3orry you mus3t us3e 12v for better efficiency
vary vr1 to determine the on time
the on time varies3 between 243 s3econd3s and 12s3econds3


Answer 9 years ago

Thank you for your help. I appreciate your advice.