Bill Nesbitt
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Bill Nesbitt's Discussions

UBlox 5: Velocity & Position actual timing

Started this discussion. Last reply by MechatronicsLLC Nov 6, 2010. 3 Replies

 

Bill Nesbitt's Page

Latest Activity

Frank Toorenburg commented on Bill Nesbitt's blog post AutoQuad version 6.1
"Any boards available? I like to fly/test this board. Frank"
May 24
Manuel Fernando Cardoso da Silva commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"Hi, I have been reading some comments about the AutoQuad and it looks like a excellent project. I am planning on buying a multicopter and it seems to me the right one, my question is: is there already material available to buy and star put…"
Apr 5
ThomasB commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"ok, that's HIGH !  :) The Open BLDC project has maybe so much power, but it seems that it was stopped a year ago http://open-bldc.org/wiki/V0.3"
Mar 13

ModeratorAnish commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"@thomasb above BL 2.0 /above hercules II ( and fraction of cost of hercules)"
Mar 13
ThomasB commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"Sorry, I've no detailed informations about Bill's ESC production state (or at least if it's planed) I've only the info about his other project, the autoquad hardware which goes very slow, but they have enough gyros for a lot of…"
Mar 13

ModeratorAnish commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"@thomas thanks for explaining it better :). BTW do u know what happened with Bill's plans.... I am keen on opensource esc which support I2C with higher currents. My design excercise is still in its intial phases ( lack of time). Would be great…"
Mar 13
ThomasB commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"With PWM 800 Hz is possible too (with non RC standard length). One main advantage for I2C is that you can get Informations back (anish named it 'feedback'). So it possible to read values for current consumtion and motor speed. I2C has the…"
Mar 13

ModeratorAnish commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"the reasoning is around faster response and feedback. I2C would allow above 400hz response and feedback."
Mar 13

ModeratorMonroe commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"Could someone explain the advantages of these ESC's and the differences? Are they going to be APM compatible? From what I'm getting there seams to be differences in systems and it will help me and others decide which way to go. What…"
Mar 13
Jeroen van de Mortel commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"Hmm that is quiet fast 25ms, mine does 120ms (with prop) so I need to improve more. I only use one motor prop combo so for me it is useful to tune it. My controlloop runs at 2,5kHz."
Feb 3
Bill Nesbitt commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"I've not had the time to complete closed loop control, but when playing with it I was able to get around 20ms to 25ms for rise time to target and perhaps another 5ms to settle.  That's with a prop, unloaded it would be much…"
Feb 3
Jeroen van de Mortel commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"Hi Bill, Did you prehaps test the stepresponse of the closed loop RPM controller. I'm testing my dsPIC BLDC controller and get a settling time of 120ms with robbe 2827-34 an EP1048 prop. RPM goes from 1750rpm to 5000rpm in 120ms. But I was…"
Feb 3
Tomas Soedergren commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"Hi Magnus, You certainly have a point about the huge price gap. Still, the various purpose of usage may justify an higher price tag for some applications. Especially in those cases where the drone might be used in commercial or semi commercial…"
Jan 16
Magnus Lindahl commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"Hi Thomas,Hercules II may be a good product, but the price tag will not justify it, especially when the Chinese sell an ESC between 6-16 USD."
Jan 16
Tomas Soedergren commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"Thanks Davey!"
Jan 16
DaveyWaveyBunsenBurner commented on Bill Nesbitt's blog post AutoQuad ESC32 v1r5
"@Tomas Www.altigator.com sell the Herkules II."
Jan 16

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Bill Nesbitt's Blog

AutoQuad ESC32 v1r5

Posted on December 6, 2011 at 9:39pm 87 Comments

Recently the Chinese ESC design utilizing the ATMEGA which we have been flashing with Bernard Konze's firmware has been disappearing from the market.  This was the push I needed to finally decide to design and build a replacement.  Collaborating with a friend, we worked on it over the summer.  It is finished and I think it came out pretty well.  I call it ESC32:…

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AutoQuad version 6.1

Posted on July 23, 2011 at 11:34am 60 Comments

For those following this saga, version 6.1 of the AutoQuad board is complete and has passed initial testing.  I have taken the 5.0 design and added features that should make it more flexible and expandable while increasing performance.  Here is a summary of specifications:

 

Hardware:

 

-…

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AutoQuad ver 5.6

Posted on June 29, 2011 at 10:44am 42 Comments







The distributors finally got in some of the new ST Micro STM32F2 series uControllers and I grabbed a few.  I was able to "shoehorn" one into a ver5 board as the pinout is close to compatible with the performance STM32F1 series.  Spent a few days rewriting the device drivers and am very impressed with this…

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AutoQuad ver 5

Posted on January 31, 2011 at 1:00am 113 Comments

I know, the world probably has enough flying machine projects, but here is yet another one.  AutoQuad's original design goal was high precision autonomous flight.  It took five prototypes before I was happy with the hardware.  The current prototype, AQv5, is showing very promising results.  In fact, there is little left to…

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Comment Wall (3 comments)

At 4:20pm on February 7, 2011, Jan Lukas said…

very neat work, really impressive :)

 

At 3:04am on July 28, 2011, Cliff Dearden said…

Hi Bill, been meaning to get back to you for some time now, just wanted to say what a great video with the Hex. and can't wait to see your next one with your new board. I hope

your going to be selling them sometime since you have two very willing customers over

here in South Africa. I'd still like to have a chat with you on the phone sometime if possible.

Thanks and cheers for now. Cliff

At 10:21pm on December 7, 2011, Martin Szymanski said…

You are correct. Voltage has its push (electromagnetic force) Where as current is similar to a larger capable pipe flowing. (101) I am not sure of the older ESC's but I know that some modern ESC's have ability today to do Vectoring.

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