168,960

• amarant

  yesterday at 11:41 PM

  Clearly 10,813,440. Gotta factor the words!

Can lidar be purchased for hobbyist use yet?

• generuso

  today at 12:43 AM

  Sure. Line scan indoor units are extremely affordable, and some cost less that $20, sold as spare parts for robot vacuum cleaners. Outdoor units (with higher ambient light tolerance and longer range) are an order of magnitude more expensive, but also available.

  Here is some detailed information about low cost units: https://github.com/kaiaai/awesome-2d-lidars/blob/main/README...

• frozeus

  yesterday at 10:36 PM

  Depends on your budget and the resolution you need.

  E.g Livox mid 360 https://store.dji.com/en/product/livox-mid-360

• ceejayoz

  yesterday at 10:34 PM

  https://www.adafruit.com/product/4010

• froglets

  yesterday at 11:32 PM

  I haven’t done it myself but I’ve heard of people harvesting LiDAR units from their old/broken robot vacuums.

• ImPostingOnHN

  yesterday at 10:49 PM

  Check out PiLIDAR for one of many options:

  https://github.com/PiLiDAR/PiLiDAR

BTW with self-driving cars, what happens when there are hundreds of Lidar signals at one intersection?

There's no way a sensor can tell if a signal was from its own origin?

Guessing any signal should be treated as untrusted until verified somehow

but I suspect coders won't be doing that unless it's easy

• r2_pilot

  yesterday at 10:53 PM

  Typically you use a pulse train and filter your train from the noise

• jowday

  today at 1:00 AM

  Worked adjacent to the AV space 5~ years ago. This wasn’t my area but I remember learning that this was a robustly solved problem long ago.

• Rarebox

  yesterday at 10:51 PM

  If one lidar hits another, it will result in at most one bad reading (perhaps a bad column?). This can likely be filtered, or a bad scan (360deg) can be altogether rejected and the data predicted using models based on past sensor readings.

• MengerSponge

  yesterday at 10:52 PM

  I guess phase and timing sensitivity help a lot, because it's unlikely that another emitter will perfectly match your emission/detection duty cycle. It's also hard to get hundreds of cars at one intersection, because cars are very big.

  The key terms in your literature/patent search should probably be "Crosstalk" and "multi-LIDaR".