Review: Waveshare Laser Receiver Module

Hi,, This is a review for a laser proximity sensor. It can be used for different applications like: smart robots. The sensor has a weakness it does not detect black objects since black objects does not reflect the laser (it absorbs most of the red laser). The sensor uses 3 wires 2 for powering it and one for the signal. It works easily with any micro-controller, arduino, other. It's working principal or logic is easy when the laser hits any object, the output pin turns high.



The sensor has 3 pins, one for positive, ground, and Output.



The sensor emits beautiful red laser



The laser is Class 2 laser product < 1mW and is considered eye safe.



The dot is bright and small.

Specification

Effective distance: 0.8m(typ), 1.5m(max)
Power: 2.5V ~ 5.0V
Dimension: 53.0mm * 18.0mm
Mounting holes size: 2.0mm

I saw a video where someone had one of these that would use the red laser to sense a balloon and then pop it with a 445nm. I think the robot in the video was made to only pop things that didnt reflect red as all the balloons were black. It would scan the area and stop when it hit a black spot. Neat idea. I wonder if this could be made to work with 520 since 1mw of 520 would be much brighter?

joeyss said:

I saw a video where someone had one of these that would use the red laser to sense a balloon and then pop it with a 445nm. I think the robot in the video was made to only pop things that didnt reflect red as all the balloons were black. It would scan the area and stop when it hit a black spot. Neat idea. I wonder if this could be made to work with 520 since 1mw of 520 would be much brighter?

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Yes, it has many applications. Probably a good idea in fact I' m planing to add a 405nm laser to detect black objects ; I'm not sure if purple laser will be completely absorbed by black objects or not; hopefully it will work but 520nm is probably the best solution but it is quite expensive at least now.

Black absorbs 405nm just fine. Here's YouTube video of one popping 100 black balloons in a row. The laser is probably 500mW+.


Alan

Pi R Squared said:

Black absorbs 405nm just fine. Here's YouTube video of one popping 100 black balloons in a row. The laser is probably 500mW+.

Alan

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I'm pretty sure that is a 445nm laser, even though he says it's bluray.