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How bad is this cheap laser power meter? (Patreon)

Published:
2022-01-30 18:48:00
Imported:
2026-06
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Content

Time to find out if the unbranded, cheap laser power meter is any good. At $79 including shipping, my expectations were set low. However, if it is better than not having a laser power meter at all, the price is attractive.

In the video, I compare it to the Sanwu Tracer 20W I have used for years and been pleased with. I also touch upon general use of a laser power meter. What happens if I touch the power head's heat sink? And since the cheap one comes with different screen colors: Does it matter which color the screen has?


Files

Previews only

How bad is this cheap laser power meter? | HWLPM Mini 10W vs. Sanwu Tracer 20W

Does a cheap laser power meter even work? Is it precise enough to be usable? In this video, I test the cheapest power meter I have found for sale and compare it to a much more expensive one. I will use lasers of different colors and optical power outputs. Will the cheap one give the same reading as the expensive one? Let's find out! I bought the laser power meters here (not sponsored or affiliated): https://www.laserpointerstore.com/products/pocket-laser-power-meter/ https://www.sanwulasers.com/product/20wlpm My Patreon-page: https://www.patreon.com/Brainiac75 Laser classes explained: https://youtu.be/dd6656CF1IY Human eyes sensitivity to colors, calculate laser lumens: https://youtu.be/lWQ66Z-HqcM Build a beam dump - easy to make: https://youtu.be/rRIlhskMYAM Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 8:37 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 Time code: 0:51 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 2:25 + 4:07 + 10:45 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 3:01 + 6:51 + 11:26 "Ossuary 6 - Air" by Kevin MacLeod (incompetech.com) ISRC: USUAN1500048 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 6:23 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #LaserPowerMeter #Brainiac75

Comments

Javanshir

Hey Brainiac, this might be an odd and random place to post this, but I just wanted to say I really love your videos and always have. They have such a calm and clean atmosphere... so informative and professionally-made but also perfectly casual! The fact you film these in your home and not a sterile laboratory fuels the notion you are a relatable enthusiast, and beyond! I'm not completely sure how to put it all in words but I hope that somewhat describes how I feel about your style, which I absolutely love. I'm always looking forward to a new video, no matter what it is about. Lasers, angry-stones, magnets—it's all so exciting, unique, and wrapped up in a completely, ah, human-scale? Again I'm not sure how to word this, but your videos are wonderfully comfortable. Thank you for making them!