Canada
Asked
Resolved Resolved by DJ Sures!

Distance Detection For NMS

I am slowly getting all the quirks with the T265 worked out by docking etc. We really need some distance sensing as well so we can get better detail of our surroundings. @DJ are there any plans in adding a distance sensor like a D435 (or D435i since we already have an IMU in the T265).

Just trying to work out what I should purchase in anticipation of some future depth sensing capabilities.


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PRO
Portugal
#25  

You asked us about what lidar we would like to see supported. Is there a winner? Lol

PRO
Canada
#26  

Quote:

You asked us about what lidar we would like to see supported.
My preference would be all of them.

#27  

DJ said:  

Quote:

What about the lidar? LOL your question is lacking context haha
My post in this thread from several days ago, responding to your question from last week.....

Quote:

@DJ said Quote: So far the best bet is to agree on a lidar that you would all like to see supported.

Did you look at the two I posted from Robotshop? (there is actually a 3rd slightly more expensive but more self contained one now, but it is the same SDK as one of the others YDLidar ----$159 instead of sub $100). I would say if you look at the SDK's of both and one would be easier to write the skill for than the other, we would all be happy to settle for it (the next least expensive is over $300. I don't think many of us are interested in that much for a single sensor). It seems that YDLidar is the more active vendor with several devices in multiple price ranges, and I believe they may all use the same SDK, so if it is useable, that might be the best option.

Here are the links again:

https://www.robotshop.com/en/rplidar-a1m8-360-degree-laser-scanner-development-kit.html https://www.robotshop.com/en/ydlidar-x4-360-laser-scanner.html and the new one: https://www.robotshop.com/en/ydlidar-g2-360-laser-scanner.html

Alan

There were several posts following this with opinions.

#28  

I would still be interested in the Lidar capability also. Steve S

#29  

Quote:

I would still be interested in the Lidar capability also.
Personally, I am fine with either solution as long as I can make the robot navigate with object avoidance reliably at a reasonable cost. Room mapping would be a nice bonus, but not critical at this stage.

Alan

#30  

I totally agree with you Alan, sounds like we have the same goals for our robotics. Steve S

PRO
USA
#31  

Lidars: Neato XV-11 (source ebay) I have one requires: A) an extra micro-controller e.g. Teensy and h-bridge OR  B) surreal controller I have both options A,B.  I use with ROS and it's a cheap alternative.

Hitachi Lidar (Robotis) I have one and it works well in ROS and with DJ plugin. I got one for $135 from Robotis, unfortunatelly the price is UP and there are other cheap options.

I played with a few lidars and if you are a lab rat or doing serious robotics SICK and Hoyoko lidars are the top choice, the cheaper lidar is: https://www.robotshop.com/en/hokuyo-urg-04lx-ug01-scanning-laser-rangefinder.html ($1000)

So for 10% or 20% of the price (100-200) don't expect the same results, so in that interval we have a lot of options and clones, so far I don't feel motivated to invest in other options because XV-11 and the Hitachi Lidar works.

I know where $100-$200 Lidar limitations are so maybe later down the road I will try to save money to get a Hoyoko or SICK lidar that works outside but I have other priorities:).

Returning to the amateurs reality...

I found this one: https://www.ebay.com/itm/360-degree-LiDAR-sensor-ranging-distance-scanning-module-ROS/313448191749

Is the Hitachi Lidar that is available in the ebay and aliexpress ($38-$50) I'll order one to test.

#32   — Edited

@ptp I tried last month to buy the Hitachi Lidar, and every vendor on eBay turned out to be the same Chinese vendor and was actually out of stock.  Also out of stock from Robotis.  Your eBay link above shows that the vendor is in NY.  I will give it a try since we already have a working skill, but I really think we need a plugin for one that is more commonly available.

Oh......   this is not the same one from Robotis is it....  Oh well, ordered, so we'll see if it is compatible.

Alan