New LiDAR sensor Benewake TF02-Pro TFmini-S TF-Luna for drones UAV

Alberto_Ds · December 20, 2020, 10:49pm

Hi, I tried with i2c

mlebret · December 21, 2020, 6:02am

Did you set the unit to i2c (default is serial)?

Alberto_Ds · December 21, 2020, 7:23am

Hi, Yes, I connect together pin 5 with GND (i2c mode)

Dave84 · December 21, 2020, 2:32pm

just try uart instead of i2c

Alberto_Ds · December 21, 2020, 4:13pm

I tried now in serial with the pixhawk 1 and it works, the problem is that on the omnibus nano f4 v6.0 I have no other serial available (I connected S.port and optical flow) and on my 3 "quad I obviously have to use the omnibus nano

Dave84 · December 21, 2020, 5:03pm

The only solution you have as you don’t have a serial port available its the i2c…, take a look on benewake site the i2c firmware for the luna.

Alberto_Ds · December 23, 2020, 4:34pm

Hi, I tried with i2c and pixhawk but no way. I suppose that fw of my TF luna Is not updated. This is my bag and i2c is indicated …

iter · December 23, 2020, 4:38pm

I was able to update the firmware using a Windows computer, an FTDI cable and their software. After that, i2c works. You can see some of my screenshots above.

dkemxr · December 23, 2020, 4:43pm

That’s not so obvious. It’s not the only 20x20 board supported. It’s the one with the least amount of UARTS though

Alberto_Ds · December 23, 2020, 5:18pm

Dave, if I have to use TF luna on a 3 "quad (sub 250g) the choice is OBVIOUSLY omnibus 20x20 nano (for the fc that I have available). Pixhawk is only for testing TF luna in a known configuration.

dkemxr · December 23, 2020, 5:24pm

Why is it OBVIOUS? Matek H7-Mini or a Kakute F7 Mini?

Alberto_Ds · December 23, 2020, 5:26pm

Because I only have omnibus nano and pixhawk

VRquaeler · December 23, 2020, 5:30pm

Hi Ari,

May I ask for which of the Benewake sensors you made this comparison?
It looks very promising.

Alberto_Ds · December 23, 2020, 6:01pm

i connected the TF luna to FTDI. Is there any way to know which FW is installed? I’m afraid of the brick! Thanks

I tried to update firmware but I have this error:

But works well

iter · December 23, 2020, 9:10pm

TF-Luna: http://en.benewake.com/product/detail/5e1c1fd04d839408076b6255.html

I’ve also flown some tests over water. Predictably, the results are marginal. LiDAR cannot deal with water.

The first three approaches over land as a baseline. LiDAR readings look good there. The next three approaches are over water, and the data are less usable. Final approach is over land, naturally.

Alberto_Ds · December 24, 2020, 8:02am

Is there any way to know which FW is installed? With fw files in this thread I have error like above picture. Thanks [
@Siya
@ibrahimqazi

ibrahimqazi · December 25, 2020, 5:47am

For every LiDAR there is a command for check firmware version, the command is mentioned in the manual. Or may be you share your LiDAR serial number I will check in the record.

Alberto_Ds · December 25, 2020, 9:24am

Thanks a lot Ibrahim, I tried to discover fw version with the GUI send command, but nothing happens. My serial number is in this picture. I tried also to update the fw but I get bootloader error (see pictures above this thread).
@ibrahimqazi

VRquaeler · December 25, 2020, 2:00pm

Hi Ari,

Thanks for the response. I really appreciate your ongoing flight tests. It’s always good to understand the possibilities and the limitations in particular of the sensors.

Can you give a note about the light conditions (e.g. cloudy, sunny, dusk etc.) of the test flights?
Why I am asking?
Experimenting with other “time of flight” type LIDAR sensors (like VL53L0X and VL53L1X) I found some of them loose a lot of their usable range in bright outdoor light conditions.

iter · December 25, 2020, 4:51pm

The first set of flights are in sunny conditions. Over-water flight is overcast.

I started out with VL531X. It works extremely well indoors, but provides little usable information outdoors in daylight. With the current setup I’m getting very usable results, as long as I’m over solid ground.