Teachers:
I need to use the laser pen and photoelectric receiving sensor, different positions in the room is decorated multiple photoelectric receiving sensor, laser pen light conduction photoelectric receiving sensor, the sensor trigger follow-up action,
Now I was using a red light and natural light photosensitive diode laser pointer to do experiments, found the photodiode easily affected by the natural light or lamplight, and misoperation, photosensitive diode is needed in the shading, can work normally, but does not rule out after shading, will encounter extreme misoperation, and shading is very troublesome, covering more than the no action, less misoperation,

Is there anyone special convenient process simple laser pen + pay pig combination recommend, or other alternatives?

Note 1. The laser pointer to use visible light
Note 2. The receiving sensor was less than 5 mm in diameter (the equivalent of 5 mm diameter of the infrared diode)

Be very grateful!