Dmitry Prokhorov
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  • Leningradskaya
  • Russian Federation
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Dmitry Prokhorov's Discussions

Solution proposal for PixHawk IMU2-related BAD ACCEL HEALTH

Started this discussion. Last reply by Anghel Alexandru Aug 11, 2016. 129 Replies

Hello,Here are key points in a few words:The "BAD ACCELL HEALTH" error may be induced by two different causes:IMU1 error - MPU6000 soldering issue while production in some early batches of PixHawk.…Continue

Tags: HKPilot32, px4fmu, fmu, PixHawk, proposal

 

Dmitry Prokhorov's Page

Latest Activity

Dmitry Prokhorov replied to Kaan Ozgen's discussion Drone with 1 hour flight time
"Hi, Antonov was soviet company but now it is Ukrainian. Love their planes and it's sad to know we are not in a same team anymore. That's for Mi-26 it's real giant with really specific market niche. So I totally agree with your…"
Oct 19, 2016
Dmitry Prokhorov commented on Chris Anderson's blog post RocketSpace/AT&T report on the future of drones
"It seems they missed projection #11:"11) Immature and prohibitive regulation laws will diminish evolution of drone industry for decades." IMHO it is most important one."
Oct 8, 2016
Dmitry Prokhorov commented on Dmitry Skotnikov's blog post GET distant wireless power solution for drone industry
"I wish you a great success, but I have to say everything you have shown so far doesn't prove anything. It looks very much like "we have some special and a very secret magic". It's not a big deal to hover inside of power cord…"
Sep 20, 2016
Dmitry Prokhorov commented on Dmitry Skotnikov's blog post GET distant wireless power solution for drone industry
"BTW, having in mind my so-many-year-ago experiments and size of coil on your copter I bet you are using frequencies something about 100kHz to 1MHz :)"
Sep 20, 2016
Dmitry Prokhorov commented on Dmitry Skotnikov's blog post GET distant wireless power solution for drone industry
"typo happened, read please as: "it may help to deliver some power""
Sep 20, 2016
Dmitry Prokhorov commented on Dmitry Skotnikov's blog post GET distant wireless power solution for drone industry
"Thank you for provided answers, Dmitry, Few more questions: How it is possible that "mounting transmission cord at a height of 1 meter or so from the ground/big metal objects" is preventing it from power loss and the same time it is…"
Sep 20, 2016
Dmitry Prokhorov commented on Dmitry Skotnikov's blog post GET distant wireless power solution for drone industry
"One more question.. 3) What are you going to do with power transmission loss due to accidental conductors that may happen to be located inside of huge powering loops? What about eddy currents in a wet ground, metal roofs and other constructions?"
Sep 20, 2016
Dmitry Prokhorov commented on Dmitry Skotnikov's blog post GET distant wireless power solution for drone industry
"Hi Dmitry, 1) To fly copter inside of the powering cord loop is definitely not the same as to fly it at 10-20 meters over or aside of. You will have a huge power transmission loss. Do you have the same demo with a copter that hovering at 10 meters…"
Sep 20, 2016
Dmitry Prokhorov replied to Artem Kholodkov's discussion Horyzont on PIXHAWK start drifting in the group PIXHAWK
"Hi Artem, there are two 3V3 regulators: U603 MIC5332 (on a sheet 5) that provides FMU-VDD_3V3 and VDD_3V3_SENSORS U1002 MIC5332 (on a sheet 10) that provides IO-VDD_3V3 and VDD_3V3_SPEKTRUM Why do you decided your problem is about 3.3V…"
Sep 18, 2016
Dmitry Prokhorov commented on Chris Anderson's blog post Lidar Lite back with V3 after Garmin aquisition
"Hi @Chris, what about Pixhawk2 ?"
Sep 15, 2016
Dmitry Prokhorov commented on Zubax Robotics's blog post PX4 Sapog - advanced open source ESC from the PX4 team
"$79 couldn't be a problem for professional grade FOC-ready ESC with redundant UAVCAN, low latency, status feedback and so on. That's great. But.. 4S and 20A limits could not be considered appropriate for professional grade device. Guys,…"
Aug 20, 2016
Anghel Alexandru replied to Dmitry Prokhorov's discussion Solution proposal for PixHawk IMU2-related BAD ACCEL HEALTH
"helo all, I recently bumped into this issue when I was going over the schematics 2.4.5 and saw that the LSM303D circuit didn't correspond to the one suggested by ST itself. On the ST datasheet the lsm303D uses total different cap values and…"
Aug 11, 2016
Ole C Salomonsen replied to Dmitry Prokhorov's discussion Solution proposal for PixHawk IMU2-related BAD ACCEL HEALTH
"Thanks for helping out Ronny ! :)"
Jun 15, 2016
ronny sandslett replied to Dmitry Prokhorov's discussion Solution proposal for PixHawk IMU2-related BAD ACCEL HEALTH
"Good to hear your testing went well so far Ole. It was for sure a bit cramped on that imu board with small smd components but with the help of magnifier glasses and an electronic microscope the soldering went quite OK."
Jun 15, 2016
Ole C Salomonsen replied to Dmitry Prokhorov's discussion Solution proposal for PixHawk IMU2-related BAD ACCEL HEALTH
"Terrry, I did the mod with the help of a friend. After letting the controller rest on the copter out in the cold (7-8C) for hours, cutting power and reconnecting 15 times, I have only been able to provoke the problem with "inconsistent…"
Jun 14, 2016
Ole C Salomonsen replied to Dmitry Prokhorov's discussion Solution proposal for PixHawk IMU2-related BAD ACCEL HEALTH
"No old APM boards laying around here :( - I had a hope these were in fact 221 due to that small tip on top of the 1, indicating it is 221 and not 122. Well gotta keep searching for the right one. And if I find a 201 (200ohm) I guess I am better off…"
Jun 10, 2016

Profile Information

About Me:
UAV hobbyist
Please tell us a bit about your UAV interest
Interested in multicopters.
Hometown:
St.Petersburg

Dmitry Prokhorov's Blog

3D printed addon set for DJI F550

Posted on April 25, 2016 at 3:13am 4 Comments

I using DJI Flame Wheel frames as workhorse for my experiments with drones. They are really robust, cheap and lightweight. Lack of room for modules is the only problem with them.

So I implemented 3rd floor board to mount FMC and companion computer over battery and bottom mount for Tarot FY680 landing gears. All STL files are published at Thingiverse

Also bottom mount could be modified to…

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