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Seb Madgwick's Discussions
IMU camera stabilisation – Drop in solution, work in progress
Started this discussion. Last reply by Mike Pursifull Aug 14, 2011. 13 Replies 1 Like
In previous UAV projects we have use the existing on-board sensors stabilise an on-board camera. To avoid re-inventing the wheel for each UAV, I have been working on a ‘drop in solution’. Here is a…Continue
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Seb Madgwick commented on robert bouwens's blog post Sebastian Madgwick's Quaternion solution - Episode II"If the code you are using is from Google Code then its rather old. The latest versions of the code are available (and maintained) here: http://www.x-io.co.uk/node/8"
ModeratorMike Pursifull replied to Seb Madgwick's discussion IMU camera stabilisation – Drop in solution, work in progress
"insightful. I need to slog through some spec sheets, but would you happen to know of a good compromise in terms of speed, torque, but at a much lighter weight (I've seen mega torque's from 270+ grams down to 62g, but I haven't looked…"
picxels replied to Seb Madgwick's discussion IMU camera stabilisation – Drop in solution, work in progress"I love your rig, i think an amazing add-on would be the replacement of the x-IMU with an iphone or ipad. If you were also streaming the feed to the device, one person could pilot the aircraft and another one would operate the camera simply by moving…"
Denny Rowland replied to Seb Madgwick's discussion IMU camera stabilisation – Drop in solution, work in progress"Will
I think you need a flybarless controller. plenty out there."
Denny Rowland replied to Seb Madgwick's discussion IMU camera stabilisation – Drop in solution, work in progress"High accuracy state of the art camera stabilisation systems comprise of inner and outer axis platforms that move independently of each other. The outer axis is controlled by an AHARs type of controller that ballparks the outer axis within a range of…"
Seb Madgwick replied to Seb Madgwick's discussion IMU camera stabilisation – Drop in solution, work in progress"The "ArduIMU+ V2 (Flat)" is a completely different type of product; it is an autopilot development platform to run user firmware on-board. The x-IMU is a sensor, data-logger and hardware IO for PC applications.
It would be best if…"
Seb Madgwick replied to Seb Madgwick's discussion IMU camera stabilisation – Drop in solution, work in progress"You are essentially asking if the x-IMU can be used as an auto-pilot. The x-IMU is a sensor board with Bluetooth, USB and SD card. Auxiliary output channels are controlled via USB/Bluetooth signals (as seen in video above). This…"
Will Kruger replied to Seb Madgwick's discussion IMU camera stabilisation – Drop in solution, work in progress"One more question...
It looks like the x-IMU board is out of stock at their website. Would the ArduIMU+ V2 (Flat) found on diydrones be a similar functioning unit? Also, how much is the x-IMU in USD & is there US distributer?
Thanks,
Will"
Will Kruger replied to Seb Madgwick's discussion IMU camera stabilisation – Drop in solution, work in progress"This is definitely something I would be interested in looking at more closely. I am an aerial photographer/videographer and actually have the servo city mount you demonstrate with. I fly traditional pod and boom helicopters and am just…"
Seb Madgwick replied to William Blair's discussion A computationally inexpensive filter for IMUs"Leave Ki as 0 and start with a Kp value of 5. You will want to reduce your Kp value from this by 10 or even 100 times. The lowest value of Kp you can use is dependent on: gyroscope bias calibration errors, and gyroscope sensitivity…"
Seb Madgwick replied to William Blair's discussion A computationally inexpensive filter for IMUs"1) The code and algorithm are rather old now and have evolved a great deal since that initial publication. I intend to publish a latest version but it is currently a low priority.
2) You need to provide caliobration measurements. …"
Seb Madgwick replied to Seb Madgwick's discussion IMU camera stabilisation – Drop in solution, work in progress"The gimbal height is 27cm while the roll bracket is level."
eduardo replied to Seb Madgwick's discussion IMU camera stabilisation – Drop in solution, work in progress"can you tell the height of this gimbal ? and the gimbal with pan servo ?
regards.
"
David replied to Seb Madgwick's discussion IMU camera stabilisation – Drop in solution, work in progress"This is a neat demo. I think the concept of being able to directly hook up the servos to the imu is a great idea because you basically create a plug and play system for those that can handle hardware but don't want to jump into the control…"
Seb Madgwick replied to Seb Madgwick's discussion IMU camera stabilisation – Drop in solution, work in progress"Thanks for the advice. The camera mount and slow servos used above was the only affordable 3DOF off-the-shelf solution I could find. The next planned version will use servos similar to your recommendation and a rapid prototyped…"
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