Who is interested in a groupbuy of Mark Kelly's DC controller PCB and related parts

Bas Horneman · 27th March 2006, 08:43 PM

Details here
http://www.members.iinet.net.au/~qui...DCbrushed.html

Mark is currently doing 16-18 hour working days due to harvesting. That is the reason I'm posting here.

-NB-
Listing your name does not oblige you to buy. And this is certainly not a promise that the board or anything related is going to be done by Mark Kelly or myself.
-NB-

Let's see where this goes..
The groupbuy could contain one or more articles

-DC controller - basic
-DC controller - de luxe.

-Universal pully
-DC Motor

please list your interest with your username or real name and number of articles.

Bas Horneman · 27th March 2006, 09:07 PM

So far 6 people have shown interest.

pinkmouse · 27th March 2006, 09:14 PM

Just looked at the schematic, and it looks very straightforward. You should be able to knock that up single sided pretty easily, so if only a small number of people are interested it would be quite feasable to roll-your-own.

Seth Hensel · 27th March 2006, 09:23 PM

I'm in for everything - motor, controller, power supply, pulley

Bas Horneman · 27th March 2006, 09:31 PM

Excerpt of the article by Mark Kelly out of my magazine.

Quote:

The prototype worked very well and my beta tester seems very happy with the result, which measures at better than 0.1% speed accuracy. The costs for this project are quite reasonable given the outcome. The raw cost of the controller, including PCB, all parts, plugs, sockets etc but not including an enclosure or power supply is about $AUD 90 / $USD 70 / EUR 55. The upgrades mentioned above add about $AUD 40 / $USD 30 / EUR 25.

How much you spend on an enclosure depends on how much you want to spend. In Australia Jaycar HB5462 is $AUD 25.75, in the USA the Hammond 1402 DV is $USD 42.15 (Allied part 802-1366), or you could use something like a 1U rackmount.

A suitable power supply giving 18V at 300 mA using a standard 2.1mm DC plug (centre positive) is fairly cheap, you could use Jaycar part no MP3029 which is $AUD18.95, you'll need reasonable heatsinking for the pre-regulator as this is a 24 volt supply. In the US Allied part no 967 8102 is suitable, this costs $USD 7.11

If there is enough interest I can put together a couple of kits – the “Cheap as Chips” unit would be the boards, ordinary grade components, connectors and the cheap box, this would cost $AUD 115 / $USD 90 / EUR 70.

The “Ultra performance” version would include the upgrade components and a nicer box, this will set you back $AUD 175 / $USD 135 / EUR 105.

Shipping will be at cost, figure around $AUD 9 / $USD20 / EUR20.

You’ll need to get your own power supply plus a pulley to suit your table. You’ll also need the motor. If there is enough interest I could source both the motor and a “universal” pulley.

Bas Horneman · 27th March 2006, 09:46 PM

Quote:

straightforward. You should be able to knock that up single sided pretty easily, so if only a small number of people are interested it would be quite feasable to roll-your-own.

Indeed. In that case Olimex could be the solution. (VSPS and phonoclone's are also made there)

Hopefully Mark Kelly has some ideas on this. For now...I want to measure interest.

Mark Kelly · 27th March 2006, 11:24 PM

I have already done a PCB design and sent it off to the fab house. I will build a couple of beta prototypes to ensure that everything is OK with layout etc., I would then be happy to put the kits together and send them out.

If we have six already I will get going on this as soon as I get back home and sleep for about a week - we have about three weeks of fruit left but the peak has passed and things get calmer now that most of the whites are in.

Werner · 28th March 2006, 05:20 AM

Just for the record (I'm one of the six):

-controller board, any parts that are not bog-standard

-no pulley, no motor

ARAD · 28th March 2006, 05:35 AM

Hi Bas,

I would be interested... Would it be possible to offer not only the motor but also a decent (can type) motor housing ? Something like a spare (blank) BIX housing would be wonderful.

Thanks and best regards,
Andreas

Mark Kelly · 28th March 2006, 05:50 AM

I'll ask VinylAddict, he made one for his DIY table - he's the beta tester for my DC controller efforts so he has the appropriate motor. His work is beautiful so it may not be cheap.

27th March 2006, 08:43 PM	#1
Bas Horneman diyAudio Moderator Emeritus Join Date: Apr 2002 Location: The Netherlands Blog Entries: 18	Any interest for a groupbuy of Mark Kelly's DC Motor controller? Details here http://www.members.iinet.net.au/~qui...DCbrushed.html Mark is currently doing 16-18 hour working days due to harvesting. That is the reason I'm posting here. -NB- Listing your name does not oblige you to buy. And this is certainly not a promise that the board or anything related is going to be done by Mark Kelly or myself. -NB- Let's see where this goes.. The groupbuy could contain one or more articles -DC controller - basic -DC controller - de luxe. -Universal pully -DC Motor please list your interest with your username or real name and number of articles. __________________ Boatanchor amps forum My "adventures" in audio

27th March 2006, 09:07 PM	#2
Bas Horneman diyAudio Moderator Emeritus Join Date: Apr 2002 Location: The Netherlands Blog Entries: 18	So far 6 people have shown interest. __________________ Boatanchor amps forum My "adventures" in audio

27th March 2006, 09:14 PM	#3
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	Just looked at the schematic, and it looks very straightforward. You should be able to knock that up single sided pretty easily, so if only a small number of people are interested it would be quite feasable to roll-your-own. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

27th March 2006, 09:23 PM	#4
Seth Hensel diyAudio Member Join Date: Dec 2003 Location: Tampa	I'm in for everything - motor, controller, power supply, pulley

27th March 2006, 11:24 PM	#7
Mark Kelly diyAudio Member Join Date: Feb 2006 Location: Geelong	I have already done a PCB design and sent it off to the fab house. I will build a couple of beta prototypes to ensure that everything is OK with layout etc., I would then be happy to put the kits together and send them out. If we have six already I will get going on this as soon as I get back home and sleep for about a week - we have about three weeks of fruit left but the peak has passed and things get calmer now that most of the whites are in.

28th March 2006, 05:20 AM	#8
Werner diyAudio Member Join Date: Jan 2002 Location: Belgium	Just for the record (I'm one of the six): -controller board, any parts that are not bog-standard -no pulley, no motor

28th March 2006, 05:35 AM	#9
ARAD diyAudio Member Join Date: Oct 2002 Location: Bavaria	Hi Bas, I would be interested... Would it be possible to offer not only the motor but also a decent (can type) motor housing ? Something like a spare (blank) BIX housing would be wonderful. Thanks and best regards, Andreas

28th March 2006, 05:50 AM	#10
Mark Kelly diyAudio Member Join Date: Feb 2006 Location: Geelong	I'll ask VinylAddict, he made one for his DIY table - he's the beta tester for my DC controller efforts so he has the appropriate motor. His work is beautiful so it may not be cheap.