4 generations of my arduino based night/movement light.
Over the last few years I have been developing a Movement activated lighting board. I liked the idea of lighting that turned on and off by itself when you needed it.
I made a LOT of prototypes over the years. I originally had a centralised system, with wires from the movement sensors and wires from the LED’s going back and forth to a box, that had a day/night sensor and did all the code deciding when to turn the lights on and off. It had some advantages, such as a centralized power supply, and the option to control the lights from one place and maybe have one sensor trigger multiple lights.
However, there were a LOT of wires going back and forth, which as most householders would know, NOT EASY.
So i made a more localised solution, localised power, and localised light sensing.
Seems to work just as well.
I have thought about using some sort of linking RF radio to report the light status. And maybe trigger nearby lights, but hey they can trigger themselves if they need to , so really not worth it.
There is also a photo at the bottom of the improvement in leds over the last few years also..
Four in a row.
The original solution, in a case with relays a UNO and a power supply, lots of screw terminals.
The first version, got my spacings wrong, and left lots of space on the board, and very few features.
There weren’t too many LED’s available back in the day that were powerful, so I had to make arrays, then the chip types ie LUXEON etc came out, now we are spoiled for choice and there are many super bright and powerful leds available.
First few versions of the board, didn’t really do much extra stuff. Always programmable via arduino so always did the job, but it was the first PCB i had ever given a go. I have talked before about making PCB’s, not so hard anymore, and really only about $20 for 10 of em.
The latest version is working well for me, small and capable. A 9v dc plugpack and away it goes. I can adjust when it comes on, how long it comes on for and how bright it is. Works for me.