Hi all. 1st post here. I have just a little knowledge of basic electronic theory and wanted to get some help designing something quite simple.
Basically a good way to detect if someone passed a motion detector, preferably, or broke a laser at the entrance of my room at least once.
After at least one of these events it would just illuminate an LED until I turned it off.
Most of the time people have used a laser on youtube (and a buzzer instead of light), but as you can image, not having to setup a laser would be a lot better.
It's for a dark indoor environment.
Can anybody help my with a circuit for this? Thanks
Basically a good way to detect if someone passed a motion detector, preferably, or broke a laser at the entrance of my room at least once.
After at least one of these events it would just illuminate an LED until I turned it off.
Most of the time people have used a laser on youtube (and a buzzer instead of light), but as you can image, not having to setup a laser would be a lot better.
It's for a dark indoor environment.
Can anybody help my with a circuit for this? Thanks