VOXL m500 Reference Drone

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  Pre-arm check failed
  • yu zhang  

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  @modaltb I see. It's good to know the story If 22027 is the default one, it will be all right. To be honest, I didn't touch the CBRK_IO_SAFETY before, and it's a bit weird why it was automatically modified for some reason. Actually, I was trying to refresh a re-compiled 1.11.3-0.2.3 with my modification (increasing GPS log rate). So, I guess it might reset the value to 0 by PX4 default. Anyways, thanks so much!
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  Get fixed pose via ROS or QGC
  • 張為超  

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  Question about voxl-dfs-server.conf and voxl-tflite-server.conf
  • yu zhang  

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  @Alex-Gardner All right, thanks so much for that
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  GPS sampling rate is limited
  • yu zhang  

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  @stevet All right, thanks so much for that, and I will have a try about it then
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  The angle of the tracking camera mount on m500
  • yu zhang  

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  @Alex-Gardner All right, thanks so much for double-checking
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  Limted flight speed in mission and position modes
  • yu zhang  

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  Hi @Chad-Sweet thanks for that, and it seems it could work by setting a higher value of the maximum speed in QGC. I will test it again to see if it could work to achieve a fast speed in the mission mode
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  VOXL streaming has at least 2-3s delay for default 640x480 using hires
  • yu zhang  

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  Hi @張為超 All right, thanks so much for that, and I will then have a look at it
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  Controlling a servo with VOXL
  • vmassague  

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  Yes, chr is an issue most likely. Take a look at how uint8 from a binary representation is sent here : https://gitlab.com/voxl-public/voxl-sdk/core-libs/libapq8096-io/-/blob/master/lib/python/voxl_i2c_apm_v1.py#L48 you can do something similar (also example for hex). The data type needs to be some sort of an int. #values of configuration registers CTRLA (address 0x00) and CTRLB (address 0x01) CTRLA = np.uint8(int('0b01011000',2)) #offset calib every 128 conv, volt=Sense+; so sampling takes about 35ms (for both voltage and current together) CTRLB = np.uint8(int('0b00000100',2)) #addresses of registers for reading data REG_VRAW = int('0x1E',16) REG_IRAW = int('0x14',16) #write configuration to both LTC2946 devices p.slave_config(ID0) p.write(0,8,CTRLA) p.write(1,8,CTRLB) ... p.slave_config(ID0) vraw_batt = p.read(REG_VRAW,8,2) iraw_batt = p.read(REG_IRAW,8,2)
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  How to use voxl-logger to sample hires camera?
  • Matthew Howlett  

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  +1 for this functionality if possible. Would it be possible to merge the color branch into dev/master for the next release? If speed is a problem I think it would be acceptable to limit this to lower resolutions as a starting point
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  m500 enabling RTK GPS
  • yu zhang  

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  @Eric-Katzfey Thanks so much for double-checking! The used RTK is F9P (u-blox F9) based, so I think the Holybro one should also work for PX4 unit. I will double-check with the team in Holybro if everything is good for the replacement then.
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  Landing gears for VOXL m500
  • Ashish Chittimilla  

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  Radio frequency regulatory information of m500
  m500 wifi documentation frequency japan • • garcia-g  

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  Gimbal mechanism along with camera
  • Ashish Chittimilla  

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  We do not have any recommended or supported gimbal solutions at this time, sorry. We have had a difficult time finding one that is readily available. Some folks have had luck with Tarot gimbals though, you could try that.
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  What is the maximum thrust that one rotor can generate?
  • DarkKnightCH  

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  sorry for the slow reply. We have a bunch of data from our dyno bench here
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  This topic is deleted!
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  This topic is deleted!
  • jskard  

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  m500 Autonomous Flight
  • Moderator  

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  @Developer-Evaluation Exactly. If you're using an alternate data link for motor control such as LTE or Microhard the RC radio is purely for safety purposes.
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  Camera server crashes with any use of stereo cameras.
  • mud za  

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  This issue pops up from time to time and it is, without fail, a hardware issue. Can you check not just the connectors for your stereo cameras but also the cables themselves. They can develop kinks or get scratched and expose the traces if they go through any number of unfriendly environments, which will regularly lead to hal3 being unable to see the device.
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  GPS LED Not Lighting Up
  • Moderator  

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  voxl-gpio not working as expected
  • Matthew Howlett  

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  Great, thanks for the info. I suspected something along those lines.