Author Topic: Who would like an ultra-low distortion audio oscillator PCB?  (Read 15445 times)

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Offline GK

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Who would like an ultra-low distortion audio oscillator PCB?
« on: October 15, 2012, 10:52:22 AM »
UPDATE: THIS OFFER IS NOW CLOSED. I WILL NOT BE HAVING ANY FURTHER BOARDS MADE
« Last Edit: May 08, 2016, 11:06:24 PM by GK »
 

Offline EEVblog

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #1 on: October 15, 2012, 12:58:33 PM »
Sounds like a case for a Kickstarter crowd funded project?
Or in your case, Pozzible for Oz.

Dave.
 

Offline JuKu

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #2 on: October 15, 2012, 05:32:11 PM »
I'd be interested about notch filter, provided a little bit better documentation. Either ready-made or PCB only. I have AP and dScope audio analyzers, so I can asses how good that is.  ;)
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Offline krivx

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #3 on: October 15, 2012, 09:27:59 PM »
I would be interested but I'd like to have some idea of cost before committing...
 

Offline EEVblog

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #4 on: October 15, 2012, 10:16:04 PM »
OK, thanks to Google I now know what "Kickstarter" and "Pozible" are. Intetresting concept. On Pozible one guy seems to have >$19k for sticking RGB LEDs into a hoola hoop!  :o How many of these projects actually come to fruition in the end? Some seeem pretty ambitious, some completely stupid. Cast your net wide enough and it seems you can sell almost anything.

Err, you haven't been following Kickstarter then! (there is another recent thread on it).
Every kid in his garage is getting 6 or 7 digits for any idea they throw out there. 5 digits is practically guaranteed on Kickstarter for any flashing led board.
How about $313K for a micro on a board?
http://www.kickstarter.com/projects/digistump/digispark-the-tiny-arduino-enabled-usb-dev-board
An example of a simple bare board that met it's very modest funding target:
http://www.kickstarter.com/projects/671510748/superlf398-low-parts-count-sample-and-hold?ref=card

Pozzible is much less simply because it does not have the market presence and hype of Kickstarter.

How many actually deliver? Well, almost all of them are later than promised because so many underestimate how much time/effort it takes to manufacture stuff. And some completely fall through and deliver nothing after a year or two.
There is so much failure that Kickstarter have recently changed the rules to try and stop "pie-in-the-sky" ideas getting listed.

But if you need money up front, and effectively get "pre-sales", it's well worth considering.

Dave.
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #5 on: October 15, 2012, 11:30:25 PM »
Thanks Glen! I'm in for one board. I'm in the USA. I would prefer plated through holes, solder mask two sides, and silk screen one side.
 

Offline poptones

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #6 on: October 16, 2012, 06:43:12 PM »
You may be underestimating your market based on low sampling frequency. Post an article in rec-audio-high-end and one in rec-audio-tech and see how many responses you get.
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #7 on: October 16, 2012, 11:58:02 PM »
I posted it in a thread specific for ultra low distortion oscillators on DIYaudio.
http://www.diyaudio.com/forums/equipment-tools/205304-low-distortion-audio-range-oscillator-73.html
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #8 on: October 17, 2012, 07:31:22 AM »
I also posted this thread in the DIYaudio group buy forum:
http://www.diyaudio.com/forums/group-buys/221670-sv-oscillator-pcb-group-buy.html

Hopefully there will be more people interested in your oscillator.
 

Offline Short Circuit

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #9 on: October 17, 2012, 07:37:59 PM »
Just put the quotation in the cart, and it will show the shipping. You can still abort.

As for the oscillator demand, I gues it will help to 'sell' it a bit more; where are the images of the PCB, a bill of materials, maybe a finished build cost estimate, technical specs such as power supply & consuimption. When you have all these things together, more people will be interested. Heck, even I might be ;D
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #10 on: October 19, 2012, 03:19:15 AM »
Wow, that's a lot for shipping a board! The price for the boards is good though. It's less than what I can get here in the USA. Let's hope there's more interest in this board. How many do you have interested so far?
 

Offline grenert

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #11 on: October 19, 2012, 03:29:23 AM »
Wow, that's a lot for shipping a board! The price for the boards is good though. It's less than what I can get here in the USA. Let's hope there's more interest in this board. How many do you have interested so far?
I think that $17 is the total cost with shipping [(298+50)/20=17.4].   ;)
 

Offline mlloyd1

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #12 on: October 19, 2012, 03:45:33 AM »
GlennK:

Count me in for one board.

mlloyd1
 

Offline Noize

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #13 on: October 20, 2012, 01:32:20 AM »
Count me in for one please. :)
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #14 on: October 20, 2012, 01:48:30 AM »
Glen, you've got 3 more people from the DIYaudio message board in for 1 board each.
http://www.diyaudio.com/forums/group-buys/221670-sv-oscillator-pcb-group-buy.html#post3207231
« Last Edit: October 20, 2012, 02:26:36 AM by dirkwright »
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #15 on: October 20, 2012, 01:49:33 AM »
So, you have 6 total so far.
« Last Edit: October 20, 2012, 02:26:49 AM by dirkwright »
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #16 on: October 24, 2012, 08:49:41 AM »
Glen, there are 3 different surface mount version for the HEF4051. Which one did you use?
See the data sheet here:
http://www.nxp.com/documents/data_sheet/HEF4051B.pdf
Thanks.
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #17 on: October 27, 2012, 04:52:55 AM »
Hi Glen, which trimpots did you use for this oscillator? Your BOM only says "trimpot", but there are many different kinds. Thanks.
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #18 on: October 31, 2012, 02:34:16 AM »
Hi,

These ones:

http://www.jaycar.com.au/productView.asp?ID=RT4646

There are other brands of the same thing. Just make sure to order the style with the three pins in line. There is one variation with the center pin (wiper) offset.

OK, thanks. I'm almost done with a Mouser project that has almost all the parts. Mouser doesn't carry Analog Devices so they don't have the AD8226.
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #19 on: November 05, 2012, 01:19:03 AM »
Ok, I've created a project on Mouser.com:
https://www.mouser.com/ProjectManager/ProjectDetail.aspx?State=EDIT&ProjectGUID=7cd544dd-57f5-43d2-9873-5945469b09e3
Can you take a look to see if I got everything right? I know I'm missing the AD8226 (because Mouser doesn't carry Analog Devices). Also, there are no switches or other controls listed since I didn't know yet which ones to get. Otherwise, everything for the board should be there.
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #20 on: November 06, 2012, 02:39:35 AM »
Will it run just as well on +/-12VDC instead of 15VDC? I'm thinking that I'd like to run it off of batteries and 12VDC is more convenient than 15VDC.
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #21 on: November 06, 2012, 07:07:05 AM »
How do you control the output voltage for this oscillator?
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #22 on: November 14, 2012, 01:43:20 AM »
Thanks Glen! much appreciated!
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #23 on: November 24, 2012, 01:30:29 AM »
OK, I'll let you know when it arrives. Thanks again for all of your hard work and generosity.
 

Offline dirkwright

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Re: Who would like an ultra-low distortion audio oscillator PCB?
« Reply #24 on: November 27, 2012, 07:11:52 AM »
Hi Glen, I got my board today! Thank you!
 


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