Mark Kelly's DC motor articles

YCLee · 21st January 2010, 02:24 PM

I have a set of Mark Kelly's DC motor PCB for a while and is now ready to build them. Then I just found Mark's original articles on the website were gone (http://www.members.iinet.net.au/~qui...DCbrushed.html and http://www.members.iinet.net.au/~qui...C_Drive_2.html). Does anyone has a saved copy of these articles or anyone knows if there is a new link for them?
Thanks in advance.

YCLee · 22nd January 2010, 01:00 AM

Thanks to many great DIYers for giving the help in finding the files. Salute to you all!!

godfrey · 22nd January 2010, 02:05 AM

Why not just ask Mark?
Contact details here: http://www.diyaudio.com/forums/members/mark-kelly.html

Mark Kelly · 25th January 2010, 10:38 AM

The original article was in Bas Hornemanns online DIY mag

http://www.basaudio.net/pubs/DIY_2006_1.pdf.

I took the webpages down to reduce the workload involved in answering questions.

AndrewT · 25th January 2010, 10:51 AM

Hi Mark,
I had downloaded DIY2006 some while ago but not yet read your article.
Now that the appetite is whetted, I will read your article and in the meantime I thank you for your contribution.

sq225917 · 2nd February 2010, 08:14 AM

Mark do you have any currently available DC motor controllers available commercially or have you given up on us?

Mark Kelly · 2nd February 2010, 09:49 AM

I no longer support that design, although I will try to answer any questions about it. Please remember that the original was a group buy, I made no money on this.

I went in a new direction with DC motor controllers and came up with something I think is quite new and works far better than the original. Forgive the lack of detail I'm protecting my IP. I may try to commercialise it eventually but for the moment I'm working on AC controllers.

My major problem with DC remains the unreliability of the motors at low speeds. The Maxon motors are the best I've found but they just don't like being run at low speed.

sq225917 · 2nd February 2010, 01:41 PM

Thanks Mark, I look forward to it making it into production. If you ever need a 'potted' one testing I'll be only too happy to trial it at the 666rpm my deck runs at, with Maxon motor.

;-)

SisterOfMercy · 6th April 2010, 02:22 PM

Luckily I saved those webpages, as I haven't built mine yet.

I've attached three zipfiles, unpack them to the same directory. In the pdf file above there's no BOM, but in the webpages there's one.

YCLee · 8th April 2010, 01:54 AM

Thank you!

21st January 2010, 02:24 PM	#1
YCLee diyAudio Member Join Date: Apr 2002 Location: Hong Kong	Mark Kelly's DC motor articles I have a set of Mark Kelly's DC motor PCB for a while and is now ready to build them. Then I just found Mark's original articles on the website were gone (http://www.members.iinet.net.au/~qui...DCbrushed.html and http://www.members.iinet.net.au/~qui...C_Drive_2.html). Does anyone has a saved copy of these articles or anyone knows if there is a new link for them? Thanks in advance.

25th January 2010, 10:51 AM	#5
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi Mark, I had downloaded DIY2006 some while ago but not yet read your article. Now that the appetite is whetted, I will read your article and in the meantime I thank you for your contribution. __________________ regards Andrew T.

2nd February 2010, 08:14 AM	#6
sq225917 diyAudio Member Join Date: Jun 2004 Location: sheffield	Mark do you have any currently available DC motor controllers available commercially or have you given up on us? __________________ hoping to pick up some things.

2nd February 2010, 01:41 PM	#8
sq225917 diyAudio Member Join Date: Jun 2004 Location: sheffield	Thanks Mark, I look forward to it making it into production. If you ever need a 'potted' one testing I'll be only too happy to trial it at the 666rpm my deck runs at, with Maxon motor. ;-) __________________ hoping to pick up some things.

8th April 2010, 01:54 AM	#10
YCLee diyAudio Member Join Date: Apr 2002 Location: Hong Kong	Mark Kelly's motor controller Thank you!


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22nd January 2010, 01:00 AM	#2
YCLee diyAudio Member Join Date: Apr 2002 Location: Hong Kong	Thanks to many great DIYers for giving the help in finding the files. Salute to you all!!

22nd January 2010, 02:05 AM	#3
godfrey diyAudio Member Join Date: Nov 2009 Location: Cape Town	Why not just ask Mark? Contact details here: http://www.diyaudio.com/forums/members/mark-kelly.html

25th January 2010, 10:38 AM	#4
Mark Kelly diyAudio Member Join Date: Feb 2006 Location: Geelong	The original article was in Bas Hornemanns online DIY mag http://www.basaudio.net/pubs/DIY_2006_1.pdf. I took the webpages down to reduce the workload involved in answering questions.

2nd February 2010, 09:49 AM	#7
Mark Kelly diyAudio Member Join Date: Feb 2006 Location: Geelong	I no longer support that design, although I will try to answer any questions about it. Please remember that the original was a group buy, I made no money on this. I went in a new direction with DC motor controllers and came up with something I think is quite new and works far better than the original. Forgive the lack of detail I'm protecting my IP. I may try to commercialise it eventually but for the moment I'm working on AC controllers. My major problem with DC remains the unreliability of the motors at low speeds. The Maxon motors are the best I've found but they just don't like being run at low speed.

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