Replies

                  • With Copter-3.3 or 3.4-dev?

          • hmm ok thats bad news... So there is currently no way to use the opto flow sensor... 

            When I need to add another Sonar the quad gets to bulky and its not worth the effort for just positioning hold function...

            • Developer
              The recommended method is Lidar. It is much better than Sonar.
  • Does anyone know why you cannot use the barometer built into the pixhawk as the altitude for the optical flow? Is there a difference in altitude measurements between the barometer and a sonar?

    • Developer
      Because you need to know the exact distance to the surface you are looking at, and the Baro has no knowledge of that.
    • Because MS5611 has kilometer-long range and tens of meters' error over time, while sonar has meter level range and centimeter level error.

  • Now that 3DR is no longer selling the optical flow sensor. Which is the preferred chinese vendor to buy this from? I am asking this because there are reports that the sensors from some suppliers are not working correctly.

  • Hello everyone ,
    I am having a very strange issue which isn't getting solved. Just to confirm the current configurations. I have a 3DR DIY X8 frame setup with Pixhawk. I'm powering the quadcopter using a 4s Lipo battery with 14.8 V. I have attached a LidarLite V2 blue label unit as a rangefinder as well. I have a Px4Flow sensor attached to the i2C splitter. The problem is that apparently there is no change in opt_x and opt_y values in Mission Planner.  Hence I am not able to confirm whether it's working or not. Though some forums have suggested powering up Pixhawk first with a USB, even that doesn't seem to work. There is some change in graph values in QGroundControl though.

     
    The thing is this sensor used to work perfectly with changing opt_x and opt_y readings in Mission Planner however now It has stopped working after a recent reassembly.

    Any insights on new approaches to check whether the sensor is actually working or not? Very eager to start using this sensor 
    Thank you guys in advance.

    • You are welcome :)
This reply was deleted.

Activity

DIY Robocars via Twitter
Sep 9
DIY Robocars via Twitter
RT @chr1sa: We've got another virtual @DIYRobocars race tomorrow at 9:00am PT. Two dozen autonomous cars will compete, four at a time. Ther…
Sep 4
DIY Robocars via Twitter
Sep 1
DIY Robocars via Twitter
Aug 31
DIY Robocars via Twitter
Aug 31
DIY Robocars via Twitter
RT @ExplorerRobocar: Sometimes, I am really a big kid!! Having fun with my virtual RC car on the @diyrobocars track 😜😉, by using the « AR R…
Aug 24
DIY Robocars via Twitter
RT @grepLeigh: @donkey_car @unity3d @TensorFlow ~1050 episodes into training, my agent learned to erratically drive in the left lane. 🤖😆 ht…
Aug 24
DIY Robocars via Twitter
RT @EclipseCyclone: Sweet! http://Robotec.ai high performance #ROS 2 @unity3d #CycloneDDS bridge for @AutowareFdn @SVLSimulator now…
Aug 24
DIY Robocars via Twitter
RT @a1k0n: My car had a lot of trouble getting around the track at the last @diyrobocars event -- only one actual finished lap during the r…
Aug 24
DIY Robocars via Twitter
RT @SmallpixelCar: This is the run time map https://t.co/VzykOkUt2G
Aug 24
DIY Robocars via Twitter
RT @SmallpixelCar: Made a lot progress on Warm Spring Raceways track. Almost finished one lap. https://t.co/nUVpufZQyP
Aug 24
DIY Robocars via Twitter
RT @AntonioRobotics: Super fun time seeing these autonomous cars race at @circuitlaunch for the @diyrobocars quarterly meet up! The demolit…
Aug 15
DIY Robocars via Twitter
RT @a1k0n: I thought my dumb localization code was still working at the new @circuitlaunch track, but it was just *barely* working. I shoul…
Aug 14
DIY Robocars via Twitter
RT @DAVGtech: Recording of entire in person @diyrobocars race today @circuitlaunch. Fast forward a couple hours to go straight to the racin…
Aug 14
DIY Robocars via Twitter
RT @SmallpixelCar: This is the run time map. Very noisy Lidar signal https://t.co/bAbeVUMi10
Aug 14
DIY Robocars via Twitter
RT @SmallpixelCar: Today’s race with @a1k0n at @diyrobocars We both decided jumping over the wall was the way to break the 11s lap time. Th…
Aug 14
More…