You have seen in the movie that some security system uses laser as the trigger/sensor. You actually can built a simple version of that by using the cheapest material you can get in the market.
Apparatus or material you need
1. Light sensitive light/chime/music box
2. Laser pointer
3. Mirrors
First thing that you need to so is to install the light sensitive light or some call it "cat eyes". Then to protect it from the high intensity laser you can paste a thin film on the sensor. The more opaque the film the brighter place it can be installed to. But not too opaque because it will not function well. Set the light sensitive light/etc to switch on when the laser is pointed at the sensor and off then the laser is not pointed at it.
Secondly is to install the laser pointer. Anywhere you install you need to direct the ray of the laser to the sensor or the light sensitive light/etc. Then you are done.
Try to block the ray of the laser. If the light sensitive light/etc turns on, that means it works. If it is not, it is because the film you use to cover the sensor is too thin which cause daylight to light it.
You must be wondering what is the mirror for. It is for you to reflect the light as desired to form a web of laser ray. You need to ensure that the reflected laser light/ray ends at the sensor.
Apparatus or material you need
1. Light sensitive light/chime/music box
2. Laser pointer
3. Mirrors
First thing that you need to so is to install the light sensitive light or some call it "cat eyes". Then to protect it from the high intensity laser you can paste a thin film on the sensor. The more opaque the film the brighter place it can be installed to. But not too opaque because it will not function well. Set the light sensitive light/etc to switch on when the laser is pointed at the sensor and off then the laser is not pointed at it.
Secondly is to install the laser pointer. Anywhere you install you need to direct the ray of the laser to the sensor or the light sensitive light/etc. Then you are done.
Try to block the ray of the laser. If the light sensitive light/etc turns on, that means it works. If it is not, it is because the film you use to cover the sensor is too thin which cause daylight to light it.
You must be wondering what is the mirror for. It is for you to reflect the light as desired to form a web of laser ray. You need to ensure that the reflected laser light/ray ends at the sensor.
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