See the link at https://www.niteguard.com/
I would like to build several of these for my own use. I have a lot of property to cover and can't afford to pay the price for individual units. I am assuming I could build them cheaper and tailor them to my own preferences. I have built a little Radio Shack kit that works but it is simply battery operated and I have to change the batteries. Would like some that I can put in place and forget about.
So, basically I am looking for a circuit that will flash up to 4 bright LEDs (instead of 4 units pointing each direction at a central location, I would build 1 unit with 4 LEDs - 1 pointing each direction).
Flash rate on these units is approx once per second. I have seen flashing LEDs that flash once per second (approx) and would like to use them since I suspect this would reduce the component requirements (and therefore cost) since I guess there would be no need for a circuit to create the timing pulses. I would also be able to simply use standard LEDs if I didn't want them to flash (see next paragraph).
For another (but related) purpose I would like the same thing but with the addition of it detecting motion and turning on LEDs when motion is sensed. I have seen the motion detector modules that are available via eBay (for one source) and believe they could be added into the circuit without too much additional work.
Need to use a solar cell to charge nicad batteries (I have lots of AA & AAA) and I would like the option of it working in daylight OR dark. A switch, or simply a jumper at assembly time, would determine that function.
It seems to me that a single circuit could be designed that would cover these purposes with the ability to add in the motion detector -- or not -- at assembly time.
I have an electronics background -- but that was a LONG time ago and I am not only rusty with the principals but components are much different (no LEDs, few ICs, mostly solid state and vacuum tubes!!) than when I was learning/working (in the Navy) so any and all help would be most appreciated.
Thanks,
Mike
I would like to build several of these for my own use. I have a lot of property to cover and can't afford to pay the price for individual units. I am assuming I could build them cheaper and tailor them to my own preferences. I have built a little Radio Shack kit that works but it is simply battery operated and I have to change the batteries. Would like some that I can put in place and forget about.
So, basically I am looking for a circuit that will flash up to 4 bright LEDs (instead of 4 units pointing each direction at a central location, I would build 1 unit with 4 LEDs - 1 pointing each direction).
Flash rate on these units is approx once per second. I have seen flashing LEDs that flash once per second (approx) and would like to use them since I suspect this would reduce the component requirements (and therefore cost) since I guess there would be no need for a circuit to create the timing pulses. I would also be able to simply use standard LEDs if I didn't want them to flash (see next paragraph).
For another (but related) purpose I would like the same thing but with the addition of it detecting motion and turning on LEDs when motion is sensed. I have seen the motion detector modules that are available via eBay (for one source) and believe they could be added into the circuit without too much additional work.
Need to use a solar cell to charge nicad batteries (I have lots of AA & AAA) and I would like the option of it working in daylight OR dark. A switch, or simply a jumper at assembly time, would determine that function.
It seems to me that a single circuit could be designed that would cover these purposes with the ability to add in the motion detector -- or not -- at assembly time.
I have an electronics background -- but that was a LONG time ago and I am not only rusty with the principals but components are much different (no LEDs, few ICs, mostly solid state and vacuum tubes!!) than when I was learning/working (in the Navy) so any and all help would be most appreciated.
Thanks,
Mike