Ok. Thank you for your info. I am still evaluating this kind of sensor. May I ask your opinion, how about compared with infra red based sensor, like tower one???
The TeraRanger Evo 60 M would be more appropriate as it has similar range and features. Anyone who owns one can reproduce the test and is welcome to upload logs.
Hello, can a LIDAR be used to assist with altitude hold or is it primarily used for obstacle/collision avoidance?
Hello
Altitude Hold is the primary function. I used proximity because it is easier to compare signals
Thanks. I’ve been looking at the Benewake units and looking to add both altitude and position hold as well as obstacle / collision avoidance. What units would you recommend for either function?
Will
Hello
For avoidance you don’t need long range and the TFMINI can be used for that purpose as I did it here
Hello, please check TF02-Pro LiDAR datasheet with technical parameters.
SJ-PM-TF02-Pro-01 A01 Datasheet.pdf (223.6 KB)
A lot of good info, thanks for the link. Seems that LIDAR is great for alt hold and obstacle avoidance but a PX4 flow sensor is required for position hold. From what I’ve read, this flow sensor works independent of GPS but some work was
underway to combine the data from the flow sensor and GPS so that both systems work together to achieve a positive and stable position hold. Do you know if this has now been incorporated in Mission Planner or is it still in the works?
Will
Mail](https://go.microsoft.com/fwlink/?LinkId=550986) for Windows 10
Hello,
PX4Flow works as a velocity estimator and it can serve as a GPS backup in case you loose the signal for a short time. But the switching mechanism is not fully functional and there is some work being done ATM th optimize the switching , look for Lsne Switching in the forum.
I see a “FLOW HOLD” mode has been added in Mission Planner. I’m a little confused as it indicates that it does not require a rangefinder. Based on your experience, what optical flow unit would you recommend for use today and would you combine it with a LIDAR?
Will
PX4FLOW is still the best as it is completely integrated within EKF estimator using the rangefinder distance (altitude) for precise measurement of velocity at various altitudes
Would you recommend using a PX4 with a sonar rangefinder or without and utilize the LIDAR for altitude?
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Sonar signals get washed out by airflow
Lidar are best
Thanks for your patience and insight, very much appreciated. Weather is looking good here in Toronto, time to dust off the gear.
Will
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I use TF02 on serial port 4 (GPS 2) of Pixhawk cube black. when turn on the vehicle, both GPS 1 and GPS 2 port power is shut down, other parts works.
What is problem?
Thank you
We generally power the LIDAR on a dedicated UBEC (3-5 Amps) and Lidar Lite recommendation is to add a 470 uF capacitor on the Vcc.
Thanks, Yes, the reason is my Cube supply is only 0.5A. I fixed this issue. use extra power supply 5V for TF02.
Hello ppoirier,
I need your advice for my copter that can not arm after installing Benewake TF mini. The reason is because RTL Altitude above Range Finder max. range.
RTL Altitude is 15m and Range finder max. is 5.5m.
Thank you.
I created a new post here:
Thanks for this blog- I had previously read the that the Lidar lite v3 required 680 uf and I wired accordingly (actually 690) and powered via mauch pc for 5.3 volts and could confirm power out through to lidar. bit I get no varification in status menu of functionality. I will try 470 and hopefully this will work … my other question i2c address do I need to add one for ising only a single i2c device?
Hello
It all depend on the Ubec capacity , you may need cspacitor on low regulated devices.
As for I2C address , the default adress is just fine just plug it in FC and enable rangefinder on Mission Planner, reboot and check on rangefinder values