Doodlebug - USB Isolator
Feb 8, 2014 at 8:36 PM Post #46 of 305

fordgtlover

Headphoneus Supremus
Joined
Nov 29, 2006
Posts
2,757
Likes
46
  I had an idea of using the usb logo for the legs.
 
The following is not an attempt for the actual logo, simply demonstrating the idea.
(i'm not a graphic designer, and not about to start)
 

 
If going for a real cute bug (nothing like the above) i think it would still be cool if its front feet were circular, middle one's triangular, and rear feet square, as a reference to USB.

That would get my vote. I think it's great.
 
Initially, I thought the USB Trident would surely be trademarked or copyrighted, but I can't find it listed in the USB IF documentation linked below.
 
http://www.usb.org/developers/logo_license/USB-IF_TLA_Usage_Guidelines_082713.pdf
 
Feb 8, 2014 at 10:42 PM Post #47 of 305

music_man

Headphoneus Supremus
Joined
Jun 6, 2005
Posts
3,823
Likes
198
i saw a product called mophie. about the size of this. that might provide even better power and make this portable. i have no idea if it is worthwhile i just figured id mention it.
 
Feb 9, 2014 at 12:23 PM Post #48 of 305

JacobLee89

100+ Head-Fier
Joined
Sep 19, 2013
Posts
390
Likes
49
  i saw a product called mophie. about the size of this. that might provide even better power and make this portable. i have no idea if it is worthwhile i just figured id mention it.

 
I think it may help "some" usb dacs. I can't say how much it'll improve the output on, lets say, mobile phones if this was anyway possible but it's food for thought.
 
May not help people like me since I'm a desktop sort of guy.
 
Feb 12, 2014 at 7:52 PM Post #50 of 305

Avro_Arrow

MOT: Soundwerx Designs
Joined
Apr 8, 2010
Posts
2,211
Likes
54
 
We found our first error...

The EAGLE footprint for J1 was not correct.
The footprint was set up for pins and the part
has tabs. I have modified the EAGLE footprint
to reflect reality.
 
My recommendation is to trim down the tab
to fit the hole.
 
Feb 12, 2014 at 8:33 PM Post #51 of 305

fishski13

Member of the Trade: SolderWorksAudio
Joined
Nov 2, 2004
Posts
1,908
Likes
40
got the board today.  thanks Arvo and Tomb!!!
 
finalizing and placing Mouser and Digikey orders tonight.
 
Feb 12, 2014 at 8:41 PM Post #52 of 305

Avro_Arrow

MOT: Soundwerx Designs
Joined
Apr 8, 2010
Posts
2,211
Likes
54
  got the board today.  thanks Arvo and Tomb!!!
 
finalizing and placing Mouser and Digikey orders tonight.

Your welcome!
 
Just placed my order too (all from Digi-key).
I don't expect the board for a few more days.
 
Feb 12, 2014 at 9:12 PM Post #54 of 305

fishski13

Member of the Trade: SolderWorksAudio
Joined
Nov 2, 2004
Posts
1,908
Likes
40
Feb 12, 2014 at 9:16 PM Post #55 of 305

Avro_Arrow

MOT: Soundwerx Designs
Joined
Apr 8, 2010
Posts
2,211
Likes
54
  looking at the datasheet, the SMD version for J1 is a little wide for the board pads, but may work:  http://www.mouser.com/ProductDetail/Hirose-Electric/UX60-MB-5ST/?qs=%2fha2pyFadug63YtrwsEixoQPqVODSOA1lIiVOr57FQKNZt%2fo%252bCTYTA%3d%3d


I fixed the problem for the next run of boards already.
 
I was going to use the smd version but was concerned about mounting security.
I figured the mounting tabs would be more secure.
The full through hole version I did not like, it did not route well.
 
Feb 12, 2014 at 9:28 PM Post #56 of 305

fishski13

Member of the Trade: SolderWorksAudio
Joined
Nov 2, 2004
Posts
1,908
Likes
40
  my wife thought it was junk mail but i spotted the doodlebug , saved in the nick of time :) 

biggrin.gif

 
Feb 12, 2014 at 9:36 PM Post #57 of 305

fishski13

Member of the Trade: SolderWorksAudio
Joined
Nov 2, 2004
Posts
1,908
Likes
40
 
I fixed the problem for the next run of boards already.
 
I was going to use the smd version but was concerned about mounting security.
I figured the mounting tabs would be more secure.
The full through hole version I did not like, it did not route well.

 
probably a good idea for those that want to use manly heavy/stiff audiophile USB cables
regular_smile .gif
.
 
Feb 12, 2014 at 10:22 PM Post #58 of 305

RagunaAsh

Head-Fier
Joined
Dec 17, 2013
Posts
52
Likes
12
Quick question: what's C8? I don't see it on the BOM...
 
Feb 12, 2014 at 10:56 PM Post #59 of 305

RagunaAsh

Head-Fier
Joined
Dec 17, 2013
Posts
52
Likes
12
Same question with R5?
 
Feb 12, 2014 at 11:56 PM Post #60 of 305

fishski13

Member of the Trade: SolderWorksAudio
Joined
Nov 2, 2004
Posts
1,908
Likes
40
my MF V-Link USB-S/PDIF converter draws a max 160mA.  I'm wondering if the 200mA DC current rating of the ferrites is enough engineering margin of error?
 

Users who are viewing this thread

Top