Very cool. Could I use a few fixed targets and mount the rangefinder on a robot to position it to within a few mm at any coordinate within a 100 meter radius?
I'm afriad these don't have nearly a 100 meter range. Getting past 12 meters even is going tocost BIG money. If it's an outdoors area, I suggest checking out GPS with RTK correction.
You video about neato xv11 lidar is very helpfull to me, I am planning to build a ros smart robot car with neato lidar . but I don't know how to power the lidar , I tried many conventional battery, however , it doesn't work. the lidar's motor can spin, but there is no data received. Do you know what kind of power bank can be used for neato xv11 lidar. thanks
I can't speak for a specific power bank - you really want something adjustable as the lidar won't transmit any data if it's going too slow, but too many volts results in corrupted data. If you're not getting any data, Check on the following common reasons: 1. Turret going too slow. If you are using fixed batteries to power the motor, you likely have 3 volts (often too low), 4.5 volts (too high), or 5v (too high). 2. tx and rx wires are reversed - try switching them. 3. You don't have permission for the USB port - watch the video starting at time 14:00. 4. I'd say check the polarity or power to the turret motor - off the top of my head I can't recall what this does...perhaps the unit won't transmit if spinning the wrong direction. 5. I won't say it's common but I have gotten one of these that simply stopped working. Good luck and please share pictures of your robot build along the way! (Facebook.com/practicalrobotics is the best place for now). FYI Practical Robotics in C++ is now available from Amazon and many book seller sites - I hope you find it helpful on your journey! U.S. Amazon link: amzn.to/2NVBp21
I measured RPMs with a tachometer, then mapped roughly how many volts = how many RPM. The RPMs are also available to read from the data packet (see 9:58)
Got kinda excited when I saw this in my search, but unfortunately I must have either a "smarter" or "newer" Neato LIDAR, because my interface is not NEARLY so simple... It's got some major circuitboard on the bottom of the unit, that seems to be receiving the data optically (?) from the spinner... The board itself has a marked "motor" connector (8 pins), a 2 pin "R-Limit", a 5 pin "R-Wheel", a 2 pin wire going to the center of the spinner as well as the red/black wire going to the spinner motor. I guess figuring this one out ain't gonna be easy... 🤖
Oh, interesting. They do use an optical link for data from the turret and a wireless power transfer like a cell-phone charger. Some older (I presume they were the older version) used a 4-wire slip ring that tended to be the fail-point. But even those older ones and the one I demo'd with have the same connector. It makes sense that new generations of Botvac consolidate the boards to save on costs...it's just a bummer. Would you be willing to send the best pictures you can get of the board (front and back if possible, but whatever you're comfortable with is fine) as well as the exact model of neato you have to my facebook messenger at facebook.com/practicalrobotics? I'll see what info I can dig up.
@@PracticalRobotics Did you get any pictures, and figure out the wiring? I have one as well, but the wires are just alternating between yellow and green.
what does the strength value represent? is it like confidence or error?
I was looking for this. Thank You!
Glad I could help!
I have your new book on order! Can't wait to get it!
Thank you! I hope you enjoy the learning experience - please send pics of your robot projects along the way!
This was exactly I was looking for, thank you very much!
Very cool. Could I use a few fixed targets and mount the rangefinder on a robot to position it to within a few mm at any coordinate within a 100 meter radius?
I'm afriad these don't have nearly a 100 meter range. Getting past 12 meters even is going tocost BIG money. If it's an outdoors area, I suggest checking out GPS with RTK correction.
Thanks for the video, Cool! 😃👍
You video about neato xv11 lidar is very helpfull to me, I am planning to build a ros smart robot car with neato lidar . but I don't know how to power the lidar , I tried many conventional battery, however , it doesn't work. the lidar's motor can spin, but there is no data received. Do you know what kind of power bank can be used for neato xv11 lidar. thanks
The problem is solved, FTDI introduced in your video works. thanks your channel is great and inspiring .
I can't speak for a specific power bank - you really want something adjustable as the lidar won't transmit any data if it's going too slow, but too many volts results in corrupted data. If you're not getting any data, Check on the following common reasons: 1. Turret going too slow. If you are using fixed batteries to power the motor, you likely have 3 volts (often too low), 4.5 volts (too high), or 5v (too high). 2. tx and rx wires are reversed - try switching them. 3. You don't have permission for the USB port - watch the video starting at time 14:00. 4. I'd say check the polarity or power to the turret motor - off the top of my head I can't recall what this does...perhaps the unit won't transmit if spinning the wrong direction. 5. I won't say it's common but I have gotten one of these that simply stopped working. Good luck and please share pictures of your robot build along the way! (Facebook.com/practicalrobotics is the best place for now). FYI Practical Robotics in C++ is now available from Amazon and many book seller sites - I hope you find it helpful on your journey! U.S. Amazon link: amzn.to/2NVBp21
Are you actually measuring the RPM, or did you just empirically discover that a certain motor voltage results in successful reads?
I measured RPMs with a tachometer, then mapped roughly how many volts = how many RPM. The RPMs are also available to read from the data packet (see 9:58)
where is the book "Practical Robotics in C++" ? I really want it
Has the book come yet ?
Thats an awesome hack!
Got kinda excited when I saw this in my search, but unfortunately I must have either a "smarter" or "newer" Neato LIDAR, because my interface is not NEARLY so simple... It's got some major circuitboard on the bottom of the unit, that seems to be receiving the data optically (?) from the spinner...
The board itself has a marked "motor" connector (8 pins), a 2 pin "R-Limit", a 5 pin "R-Wheel", a 2 pin wire going to the center of the spinner as well as the red/black wire going to the spinner motor.
I guess figuring this one out ain't gonna be easy... 🤖
Oh, interesting. They do use an optical link for data from the turret and a wireless power transfer like a cell-phone charger. Some older (I presume they were the older version) used a 4-wire slip ring that tended to be the fail-point. But even those older ones and the one I demo'd with have the same connector. It makes sense that new generations of Botvac consolidate the boards to save on costs...it's just a bummer. Would you be willing to send the best pictures you can get of the board (front and back if possible, but whatever you're comfortable with is fine) as well as the exact model of neato you have to my facebook messenger at facebook.com/practicalrobotics? I'll see what info I can dig up.
@@PracticalRobotics Did you get any pictures, and figure out the wiring? I have one as well, but the wires are just alternating between yellow and green.
@@tadashi_hamada I did not and would still love some. Preferably to my ATgmail acct: lbrombach2
Some can run faster for more points too