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


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Bill Nesbitt's Blog

AutoQuad FC fw v6.6

Posted on July 2, 2012 at 3:00pm 100 Comments

It's been a while since I've posted an update on the progress of the AutoQuad flight controller.  The event that we've all been waiting for has arrived with ST Micro's announcement and subsequent release of their STM32F4 product line.  As expected, the micro-controller is pin for pin compatible with their STM32F2 series which the AQ v6.1 hardware was designed…


AutoQuad ESC32v2

Posted on June 25, 2012 at 6:14pm 58 Comments

I wanted to bring everyone up to date on where the ESC32 development is at this point.  After a lot of testing of the version 1 design, we found that operating under high current situations, current spikes caused by commutation were introducing a lot of noise on the digital side of things.  In the worse cases, this could lead to clocking issues causing the…


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:…


AutoQuad version 6.1

Posted on July 23, 2011 at 11:34am 61 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:




- 2" x 2.5" main board with MK mounting hole…


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 controller's performance.

I was able to bump up…


Comment Wall (3 comments)

At 4:20pm on February 7, 2011, Jean-Luc Fornier 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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