SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-28T04:03:30-06:00SparkFun ElectronicsCustomer #41918 on Adventures in Science: LIDARCustomer #41918urn:uuid:83ad35f9-4dd1-de06-3393-1f7c7c5213d72017-07-22T01:34:36-06:00<p>Thank you for nice video! Some time ago I have used this Garmin lidar with my advanced rotary stages to scan a room. Got 4.7M point cloud: <a href="http://kurokesu.com/main/2017/05/08/3d-scanning-like-a-pro" rel="nofollow">http://kurokesu.com/main/2017/05/08/3d-scanning-like-a-pro</a></p>
MikeGrusin on Adventures in Science: LIDARMikeGrusinurn:uuid:841caf4b-34db-d540-1f4d-ec33664d552f2017-07-18T17:08:39-06:00<p>We had the same thoughts last year, and actually made a <a href="https://www.youtube.com/watch?v=M6Pjlm4vcIM" rel="nofollow">video</a> where we tested various sensors on the haybales. They worked surprisingly well. The LIDAR Lite wasn't one of them as it was out of production at the time. As we get closer to AVC we'll give it a shot, but if you do your own testing please let us know what you find.</p>
NorseEngineer on Adventures in Science: LIDARNorseEngineerurn:uuid:8c8612be-ae2b-7d0b-33cf-b421687ca75a2017-07-17T17:21:09-06:00<p>I came here to ask the exact same question. I'd love to see the results of pointing two of these LIDAR modules directly at one another and trying to measure the distance.<p>Seeing as I don't have $300+ to spend to do this test, maybe SparkFun could do a quick one. =)</p></p>
JerryH on Adventures in Science: LIDARJerryHurn:uuid:a17f7d3c-8cb6-9c1a-2b88-e0fd682a243c2017-07-17T12:41:31-06:00<p>Good job Shawn.<p>I've got a few LIDAR lite units and I intend to use them for the AVC. Have you actually tried these with hay bales? I'm concerned about the consistency of the return signal and the range for reliable return.</p><p>I intend to do some experiments soon--just wondering what your data looks like.</p><p>Or has anyone else tested these with hay or straw bales?</p></p>
Shawn Hymel on Adventures in Science: LIDARShawn Hymelurn:uuid:8562682c-1c73-eb53-f780-49c8a4a5245c2017-07-17T10:32:56-06:00<p>I originally had it scanning in both directions, but there was about a 10 degree offset, and I was too lazy to write the code to make sure the measurements lined up (not for a video demo, anyway).<p>Not sure why the Sweep can't get the right corner, but I know that my laptop was blocking view to the left corner :)</p></p>
Sembazuru on Adventures in Science: LIDARSembazuruurn:uuid:4610e651-907f-2643-5067-ae9ec9cbd4502017-07-17T10:27:20-06:00<p>On your servo sweep unit, why not have it scan in both sweep directions? That should double the "frame rate" for most of the sweep.<p>Also on the Scanse Sweep, it's interesting to note that the corners of the room don't show up as well. Is this because the angle of incidence of the sensor is to acute allowing the wall to scatter most of the IR beam in directions that aren't right back to the receiver?</p><p>A commercial application of something very similar to the Scanse Sweep is in the Neato Robotics robotic vacuum cleaners. In fact, before the Scanse Sweep, the cheapest way to get a hold of a 360° scanning LIDAR was to buy one of those robots and then tear it down for the LIDAR. (The wheel motors and drop sensors could be considered bonus "free" parts with the $500-$600 LIDAR when buying the lowest end robotic vacuum cleaner...)</p></p>