Javier Cerna
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  • Lima
  • Peru
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[SOLVED] Maxbotix EZ4 Sonar in quadcopters

Started this discussion. Last reply by Gary McCray May 18. 7 Replies

------------------------------------------------------------------------------------------------------------------------UPDATE (18-05)Thank you all for your support and your quick responses. I tried…Continue

Tags: Maxbotix, EZ4, Sonar, Copter 3.4, Arducopter

 

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Gary McCray replied to Javier Cerna's discussion [SOLVED] Maxbotix EZ4 Sonar in quadcopters
"Hi Javier, Many of us of DIYdrones and Ardupilot have already been through all of this with Maxbotics including lots of the same responses from them. If you really want to get it to work you have to put it in it's own little open on the bottom…"
May 18
Javier Cerna replied to Javier Cerna's discussion Maxbotix EZ4 Sonar in quadcopters
"I copy here the answer from Maxbotix, in case it helps someone else:"
May 18
Gary McCray replied to Javier Cerna's discussion Maxbotix EZ4 Sonar in quadcopters
"Hi Javier, Laser rangefinders are not as cheap as SONARS, but the very best one for Drone use is $249.00. http://lightware.co.za/shop2017/home/53-sf20-100-m.html And I recommend it very highly. But there are cheaper ones. The Lidar Lite V3 which is…"
May 17
Javier Cerna replied to Javier Cerna's discussion Maxbotix EZ4 Sonar in quadcopters
"As a side note, which affordable rangefinder would you recommend that has been also tested with the arducopter firmware? The ones I found where around $400 - $600,which is much more expensive than all the sensors I currently have on my quads"
May 16
Gary McCray replied to Javier Cerna's discussion Maxbotix EZ4 Sonar in quadcopters
"Hi, I was actually one of the few who got SONAR to work - sort of. It is extremely subject to every kind of noise and vibration. Electromagnetic noise from the motors and ESCs, RFI from the radio, the physical noise of the copter itself and the…"
May 16
Javier Cerna replied to Javier Cerna's discussion Maxbotix EZ4 Sonar in quadcopters
"These tests were done landing in grass, but I'm not sure if that's the issue because some time ago I made similar attempts in concrete. Just in case, I'll do some tests in concrete tomorrow."
May 16

3D Robotics
Chris Anderson replied to Javier Cerna's discussion Maxbotix EZ4 Sonar in quadcopters
"What kind of surface are you landing on? I've never had much success with sonar on anything but concrete. (Also prop noise can confuse it close the ground).  I only trust Lidar for accurate ranging close to the ground.  "
May 16
Javier Cerna posted a discussion

Maxbotix EZ4 Sonar in quadcopters

------------------------------------------------------------------------------------------------------------------------UPDATE (18-05)Thank you all for your support and your quick responses. I tried landing in asphalt and the results were so much better. Below you'll find the pictures and I have attached the flight log; the sonar started working from around 3 m and the performance was acceptable. I will still consider the option of the rangefinder, as was suggested here.…See More
May 16
Javier Cerna commented on Klaus Heinrich's group PIXHAWK
"@arif The firmware is compiled using the PX4 Toolchain, from the source code in https://github.com/ArduPilot/ardupilot. Please check the following guide for more information: http://ardupilot.org/dev/docs/building-px4-with-make.html @Phil…"
Jun 27, 2016
Javier Cerna replied to Glenn Hollowell's discussion What is the safest way to remove Pixhawk plugs? in the group PIXHAWK
"You can use this type of screwdriver. https://www.kmstools.com/images/medium/S/ST-66052_MED.jpg I think it's the easiest way."
May 28, 2016

Profile Information

About Me:
Mechatronics engineer
Please tell us a bit about your UAV interest
Working at a drone startup and trying to understand better the nitty-gritty details of UAVs.
Hometown:
Lima

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