Jianguo Zhao Male East Lansing, MI United States: Like

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Ahmad Usman commented on Jianguo Zhao's blog post 'A miniature tricopter'

coooooooooooooooool i want this

Apr 24, 2010

Jack Crossfire commented on Jianguo Zhao's blog post 'A miniature tricopter'

Would have preferred this over what Marcy 2 became, but it was about the money. The absolute cheapest motor comes down to the Towerpro 2410-9 & the most durable servo is the Futaba S3102. Going smaller gets painful.

Apr 23, 2010

Greg Fletcher commented on Jianguo Zhao's blog post 'A miniature tricopter'

Extend the motors out and get the props away from the center and re-tune and i think you could increase the hang time. Minimizing the overall width IMHO is causing extra drag. Minimize what is behind/under the props.

Apr 23, 2010

funk_e commented on Jianguo Zhao's blog post 'A miniature tricopter'

More than cool! I so want one!

Apr 23, 2010

zifc commented on Jianguo Zhao's blog post 'A miniature tricopter'

cool

Apr 23, 2010

Bill Porter commented on Jianguo Zhao's blog post 'A miniature tricopter'

The picture has an Arduino Pro Mini in it. Must be it's brain.

Apr 23, 2010

Jianguo Zhao commented on Jianguo Zhao's blog post 'A miniature tricopter'

This has nothing to do with me. Follow the link you will find more detail.

Apr 22, 2010

Earl commented on Jianguo Zhao's blog post 'A miniature tricopter'

Looks great ! Earl

Apr 22, 2010

Chris McNair commented on Jianguo Zhao's blog post 'A miniature tricopter'

Sweet! What controller are you using?

Apr 22, 2010

A miniature tricopter

From http://shrediquette.blogspot.com/2010/04/mini-is-airborne.htmlSpecs Shrediquette DLXmMotor shaft distance: 132 mm Max. dimension: 259 mmWeight: 230 g Props: 5x3 3-blade GWSMotors: Roxxy 2216-25ESCs: Turnigy Plush 6A with I²C->PWM convertersBattery: 3S, 800 mAhMax thrust per motor: 237 gThrust to weight ratio: 3.1:1Total…See More

Blog post by Jianguo Zhao Apr 22, 2010

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The New AHRS from CHRobotics With only $199

http://www.chrobotics.com/chr6dm.phpThe CHR-6dm is an Attitude and Heading Reference System (AHRS) combining rate gyros, accelerometers, magnetic sensors, and a 32-bit ARM Cortex processor all on one small board. An onboard Extended Kalman Filter (EKF) handles the tricky data fusion problem, reporting yaw, pitch, and roll angles at up to 300 Hz over a simple TTL (3.3V) UART interface. The CHR-6dm provides built-in routines for gyro bias…See More

Blog post by Jianguo Zhao Mar 12, 2010

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Jianguo Zhao commented on Jose Julio's blog post 'ArduIMU Quadcopter part II (mini)'

Nice job! Actually, you can find the 5030 counter rotating propeller from: http://www.radicalrc.com/shop/. If you use the carbon fiber instead of aluminum, you can also save some weight.

Feb 25, 2010

Jianguo Zhao commented on Geoffrey L. Barrows's blog post 'Micro Helicopter Hovering in Place Using Vision Sensing'

Very nice! Do you plan to sell the sensor ring? How much will be the cost?

Jan 28, 2010

Jianguo Zhao commented on Jose Julio's blog post 'ArduIMU Quadcopter'

Thanks for your explanation! As what you said, the side motors then should have tilt in opposite directions. Say if one motor tilt 10 degree, the other one should tilt -10 degree. Am I right? I almost get it. Thanks a lot!

Jan 15, 2010

Jianguo Zhao commented on Jose Julio's blog post 'ArduIMU Quadcopter'

I still cannot figure out why the tilted angle can compensate the torques. Can somebody tell me?

Jan 15, 2010

Jianguo Zhao commented on Giles Barton-Owen's blog post 'Mini quadcopter'

cool~！

Jan 4, 2010

Jianguo Zhao's Blog

A miniature tricopter

Posted on April 22, 2010 at 2:54pm 10 Comments 0 Likes

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A New AHRS about $300

Posted on November 14, 2009 at 8:30am 8 Comments 0 Likes

The CHIMU developed by Ryan Mechatronics. Here is the link: http://www.ryanmechatronics.com/index_files/ProductDetailCHIMU.htm

Including 3 axis gyro, 3 axis accelerometer, and 3 axis compass. But it seems that there are no kalman filter implemented. However, the price is cheaper than previously posted VN-100:… Continue