Retired University Astrophysics Professor: These truly wonderfully and very inspiring videos should be a complete 101 College Course! Wonderfully done, and truly the most inspiring teaching aid I've ever seen! Kudos, and please continue building your library for all the world to learn from!

great video, 10/10 for engagement factor.

Love the bloopers at the end ...

thank you for great quality content!

Awesome informative channel

Nice video, very useful and funny.

Excellent!

Thank you Sparkfun

Good rule of thumb for Americans (and others blessed by the customary/Imperial system): The speed of light is about 1 foot / nanosecond. The propagation speed of electromotive force (that's voltage to you, bub) in copper varies depending on various factors, but inside a processor it's about 1/3 the speed of light and in very good cables it's about 9/10 the speed of light. Using those figures (and propagation delay numbers from datasheets), you can probably ballpark the time it takes between activating a signal to turn on a laser and getting a return back from your sensor. If you code the part where you turn on the laser and look for the return in assembly and count clock cycles, you can likely DIY your own crude LIDAR. Do a bit of calibration and you're set. Hey, found a new project to try. I've got some old CDROMs around here somewhere...

HI thanks for the video. Is there any demo or instructions about how to set it up (connections, software, etc) like what's shown in 4:24 of the video?

Would computer vision be a replacement for sweeping lidar or used in conjunction?

This video is underrated

Nice video ! Where did you get your metalic part for prototype ?!

Photodiodes are also great for van Eck phreaking. I wonder if I can put that Scanse Sweep on my drone, combine the LIDAR data with GPS coords, and plot all the data to make a 3D point cloud of a large area?

Thank you very much for this awesome video Shawn. I'm wondering if it would be possible to scan a dog and see only the body without the fur. Might you know if the LiDAR can penetrate fur or hair or clothing? Thank you very much!

The light travels from laser to detector, what component can be used as detector? I guess it is not simple phototransistor, it is something similar to camera? Can I buy it somewhere i make my own LIDAR module?

great video I have a question. What happens when thousands of vehicles are on the road using different versions of lidar? won't those pulses of light interfere with each other's receivers? thanks

Hello, i'm thinking if i could by one of these in the future, but i'm curious how well it work outside in a sunny day? I mean, LIDAR would be not faced directly to the sun, but would be looking around to detect obstacles.

What's that software that plots the points to get the map, I mean the map of your room that's created

I'm having some troubles when trying to use a v3HP at an update rate of 1 Khz. Any helpful insight to share about that???

This channel is much underrated!

love it

Could they be used to see inside someone’s home?

can anyone kindly tell me where can I get those really nice metal brackets with a lot of holes? any links? thanks! :DDDDDDD

OMG what a conclusion: "'I wish you luck in your world domination plans!" lol!!

I should have been impressed by LIDAR accuracy but instead my brain latched onto more proof that we landed on the moon lol

how does a lidar measure 20ns? what kind of computer does that??

Can Lidar penetrate underground?

2:36 I'm almost sure the average distance is twice this one, great vid though.

I am willing to make it with the IR sensor module

why not spin a mirror instead you would be able to spin it faster obviously. sampleing rate is still a thing but this is awsome tbvh maybe i get into robotics?

Cool, now only if I had $150 to spend on a single component.

They bounced lasers off the moon before the reflector BS.

Calc wrong: 3 x10(8) x 2 x 10(-9) / 2 = 0.3m

Lmfao ya good on world domination plan 😂

Finger quotes? Triggered!

Thks, now I don't need a spinning LIDAR

i swear i read "shawn hymen"

Light speed is slower in air

Perhaps the two most critical things, you failed to mention. First, laser beams bounce back in the direction they came from, not as if they hit a mirror. And second, single photons can be split up to 100 to 1 right now and still be effective. This makes for what is almost an unlimited potential in which a "driverless car" is the poster child. Also, "xyz" point clouds can be generated with simple photogrammetry which has overshadowed Lidar in some cases because it is so much cheaper. Try watching other people's videos.