New Star Wars droid ISN'T a CGI: BB-8's ball body can move in any direction - but how does it work?
It is cool to think that anyone with a microcontroller could make a robot for Star Wars.
http://www.dailymail.co.uk/sciencetech/ ... -work.html
New Star Wars droid ISN'T a CGI: BB-8's ball body can move i
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Re: New Star Wars droid ISN'T a CGI: BB-8's ball body can mo
I have never seen that before, it's fantastic!
Could there be some sort of electromagnet / roller combination inside the head perhaps?
Could there be some sort of electromagnet / roller combination inside the head perhaps?
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Re: New Star Wars droid ISN'T a CGI: BB-8's ball body can mo
Probably the same technology that Quadcopters and Segways use to keep level. It probably uses a Triple-axis Accelerometer+Magnetometer on board or some kind of gyroscope that cameras have on news copters. It might have rollers and magnets and there are already balancing bots. I'm sure they would redo the scene if the bot fell apart or over.
http://hackaday.com/2013/11/10/self-bal ... -features/
I found the gyroscope in the self-balancing robot and it is obsolete and non-stocked. The datasheet I found didn't say how to use it so I'm guessing they don't want anyone to use it or I just didn't understand it.
http://hackaday.com/2013/11/10/self-bal ... -features/
I found the gyroscope in the self-balancing robot and it is obsolete and non-stocked. The datasheet I found didn't say how to use it so I'm guessing they don't want anyone to use it or I just didn't understand it.
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Re: New Star Wars droid ISN'T a CGI: BB-8's ball body can mo
Sorry for the late reply Chuck. That's a great robot in that Hackaday link. I'm just wondering how much processing power is required for the robot to be able to decode the signs and the tennis ball. I wonder if you had the tennis ball next to a baseball, would it be able to tell the difference?
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Re: New Star Wars droid ISN'T a CGI: BB-8's ball body can mo
The Gyroscope's datasheet in the previous robot looked like an amplifier but I don't know enough about amplifiers to know how they make it work.
There was a write up on how the BB-8 works. Please see the comments and the video:
http://hackaday.com/2015/04/19/mini-bb- ... -a-sphero/
They also have a project in Instructables.
There was a write up on how the BB-8 works. Please see the comments and the video:
http://hackaday.com/2015/04/19/mini-bb- ... -a-sphero/
They also have a project in Instructables.
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Re: New Star Wars droid ISN'T a CGI: BB-8's ball body can mo
I think if it is perfectly round, it could ride any ball if the ratio between base-wheels and ball are the same. Think how you would ride a unicycle. I never road one but how would you get forward motion and maintain balance? I am guessing you might have to lean forward to get the wheel moving a bit and therefore I'm not certain this robot needs magnets to stay on top of the ball because it probably just needs to lean in one direction.brad wrote:Sorry for the late reply Chuck. That's a great robot in that Hackaday link. I'm just wondering how much processing power is required for the robot to be able to decode the signs and the tennis ball. I wonder if you had the tennis ball next to a baseball, would it be able to tell the difference?
SparkFun 9 Degrees of Freedom IMU Breakout - LSM9DS0
https://www.sparkfun.com/products/12636Description: This is the LSM9DS0, a versatile motion-sensing system-in-a-chip that houses a 3-axis accelerometer, 3-axis gyroscope, and 3-axis magnetometer. That’s right, 9 degrees of freedom (9dof) from a single IC!
Each sensor in the LSM9DS0 supports a wide range of, well, ranges: the accelerometer’s scale can be set to ± 2, 4, 6, 8, or 16 g, the gyroscope supports ± 245, 500, and 2000 °/s, and the magnetometer has full-scale ranges of ± 2, 4, 8, or 12 gauss. Additionally, the LSM9DS0 includes an I2C serial bus interface supporting standard and fast mode (100 kHz and 400 kHz) and an SPI serial standard interface.
It seems like a lot of work but the author of the above video shows there are a lot of files already made to use the boards for this robot. The product list starts at 8:45 should you want to fast forward in the video.
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