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USB Based Variable Power Supply For Small Projects
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mikexz...@gmail.com  
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 More options May 20 2012, 2:19 am
From: mikexz...@gmail.com
Date: Sat, 19 May 2012 23:19:29 -0700 (PDT)
Local: Sun, May 20 2012 2:19 am
Subject: USB Based Variable Power Supply For Small Projects

There is a consensus in the electronics community that a quality power
supply is crucial for computer engineering but most variable power supplies
plug in to a wall outlet and they are large and very inconvenient to carry
while traveling.

Mike Zhao, a systems architect and designer of the VariPower 500A device
explains how the device came about. "Many times while traveling, I have had
the need to debug my firmware on a circuit board. Unfortunately, I was not
carrying a power supply. So in turn, I had to wait until I reached my lab
before I could power my circuit board to test the new firmware. This new
innovative project, the USB Based Variable Power Supply, will solve this
issue effectively, affordably, and reliably."

VariPower-USB-500A is open source hardware, all hardware design files and
firmware source code are released under the GPL v2 license.

With 24 pledges on Kickstarter and over $800 potentially raised the first
day, this device appears to have caught the eye of their target audience.

Brad Hunter, also an inventor, designed the devices sticker and t-shirt
that is a pledge reward. Brad says this about the VariPower USB power
supply, "When Mike first asked me my opinion about the concept, I was
floored that there was not something in the market already. The premise is
simple and the function is needed. There is a whole community of students,
hackers and engineers that can benefit from this device. Devices like
Arduino and similar project boards will benefit greatly from a stable and
easy to use power supply."

The project is on Kickstarter.com and is officially called "USB Based
Variable Power Supply for Small Projects." Currently, Kickstarter.com is
the only way to get one of the devices. The basic device on Kickstarter
requires a $30 pledge.  To make a pledge and or get a unit, go to
www.kickstarter.com and search "variable power supply".

http://www.kickstarter.com/projects/210251816/usb-based-variable-powe...

Thanks

Mike

Etonnet LLC


 
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Mike Pountney  
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 More options May 20 2012, 7:25 am
From: Mike Pountney <mike.pount...@gmail.com>
Date: Sun, 20 May 2012 12:25:52 +0100
Local: Sun, May 20 2012 7:25 am
Subject: Re: [brighton-hacker-space] USB Based Variable Power Supply For Small Projects

Interesting,  for two reasons:

*) This is list spam, but for something that I genuinely am interested in supporting. Hence, is it really spam?

*) If we had a project on kickstarter or indiegogo, spamming all the hackspace lists in the world would be a viable way of achieving the funding goal - which is a difficult thing to get by word of mouth alone.

What does everyone think? Are you tempted or put off supporting this by this email?

On 20 May 2012, at 07:19, mikexz...@gmail.com wrote:


 
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Emma O'Sullivan  
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 More options May 20 2012, 8:02 am
From: "Emma O'Sullivan" <e...@ejosullivan.com>
Date: Sun, 20 May 2012 13:02:28 +0100
Local: Sun, May 20 2012 8:02 am
Subject: Re: [brighton-hacker-space] USB Based Variable Power Supply For Small Projects

It wouldn't have been difficult for the guy to write it in a way that
doesn't make it sound so much like spam.

I think if he just went, "Hi, I've made this cool thing that's on
Kickstarter, thought you might be interested, here's some info: ..." it
wouldn't put people off at all.

Em

On 20 May 2012 12:25, Mike Pountney <mike.pount...@gmail.com> wrote:

--
*Emma O'Sullivan*
*
*
*07810 442044*
*e...@ejosullivan.com*
*Twitter: @ejosully*

 
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Toby Cole  
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 More options May 20 2012, 1:40 pm
From: Toby Cole <t...@tubs.org.uk>
Date: Sun, 20 May 2012 18:40:50 +0100
Local: Sun, May 20 2012 1:40 pm
Subject: Re: [brighton-hacker-space] USB Based Variable Power Supply For Small Projects

Personally, if this had ended up in the moderation queue I'd probably have marked it as spam (I wouldn't have read the whole thing either, the first paragraph is spammy enough)

On 20 May 2012, at 13:02, "Emma O'Sullivan" <e...@ejosullivan.com> wrote:


 
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Adrian Godwin  
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 More options May 20 2012, 2:13 pm
From: Adrian Godwin <artgod...@gmail.com>
Date: Sun, 20 May 2012 19:13:05 +0100
Local: Sun, May 20 2012 2:13 pm
Subject: Re: [brighton-hacker-space] USB Based Variable Power Supply For Small Projects
It's really not very functional. Doesn't even allow USB setting of the
voltage : even though almost all the necessary hardware is there, it
uses a knob. And he wants a $14,000 kickstart ?

-adrian


 
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Chris Holden  
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 More options May 22 2012, 1:42 pm
From: Chris Holden <chris.hol...@multiedge-net.co.uk>
Date: Tue, 22 May 2012 10:42:24 -0700 (PDT)
Local: Tues, May 22 2012 1:42 pm
Subject: Re: [brighton-hacker-space] USB Based Variable Power Supply For Small Projects

It's spammy. But acheives it's goal insomuch as I went to the website to
find out more about it.

But then I thought about a PP3 and a voltage divider which would probably
suffice for the duration of any travelling I was doing until I could get to
a power socket in a wall.
I don't understand the whole charging li-ion batteries with a variable
supply - if you're using a charging IC, just give it 5v and it takes care
of the charging curve for you. If you're not, then you deserve to have hot
batteries in your pocket anyway! Also, this supply probably uses more power
for its own 3x7-segment display than I'd get use out of - if you're using a
rotary pot, why not just draw a dial on it and do away with the LEDs?

I wasn't put off by the initial email - it sounded quite interesting (so is
it spam or not, I'm still not sure!)
What put me off was reading more about the product - I just don't get it.


 
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