bryan1
Well-Known Member
Hiya Guy's,
Well I finally got some time to tinker with my electronics( da missus ain't home) and I got my 3 watt led setup as a night light for when I walk back to the house. This led is shining a path around 30 metres which is great but ideally I want to set up a 5 minute time delay so it switch's off automatically. My first thought was using a 555 but with that type of delay I'd need a bigger cap than is recommended. I did see a few years ago a work around for longer time delays but after searching I keep coming up with blanks. I could use a pic but thats overkill so does anyone have any reference to using long delays with the 555?
Cheers Bryan
Well I finally got some time to tinker with my electronics( da missus ain't home) and I got my 3 watt led setup as a night light for when I walk back to the house. This led is shining a path around 30 metres which is great but ideally I want to set up a 5 minute time delay so it switch's off automatically. My first thought was using a 555 but with that type of delay I'd need a bigger cap than is recommended. I did see a few years ago a work around for longer time delays but after searching I keep coming up with blanks. I could use a pic but thats overkill so does anyone have any reference to using long delays with the 555?
Cheers Bryan