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Author Topic: DIY key fob battery box  (Read 26975 times)

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Offline mrfender

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Re: DIY key fob battery box
« Reply #30 on: April 10, 2024, 06:43:13 AM »
The SonyInsider page that many people have referenced is no longer up but I was able to find the schematic that the author had drawn up.  I'll just leave it here for reference.
DR2d, DR-44wl, DR-608, PCM-M10, Roland R-07, PCM-A10
CA-14 card/omni, AT853 cards/omni, Nak CM-300 cards/omni, Line Audio CM4

Offline one8ung

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Re: DIY key fob battery box
« Reply #31 on: April 10, 2024, 08:55:41 AM »
I have saved the Sony Insider thread: https://we.tl/t-rrqjY0tCFb
« Last Edit: April 10, 2024, 08:58:35 AM by one8ung »
Mics: DPA 4061

Power: CA-UBB - SP-SPSB-10 (9V)

Recorders: Tascam DR-2d (4x)

Offline shadowfax1007

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Re: DIY key fob battery box
« Reply #32 on: April 11, 2024, 03:57:41 AM »
I have saved the Sony Insider thread: https://we.tl/t-rrqjY0tCFb

Uh, Anti-virus is coming up with a Trojan alert for that zip file. Have you scanned your PC recently for threats?
www.bnelive.net

Mics:
SP-CMC-2 (Cardioid & Sub-Cardioid caps)
SP-BMC-12 (Omni)
SP-BMC-1 (Omni)

Power:
SP-SPSB-10

Recorders:
Olympus LS-10
Olympus LS-12
Sony PCM-A10

Offline one8ung

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Re: DIY key fob battery box
« Reply #33 on: April 12, 2024, 01:29:44 AM »
I have saved the Sony Insider thread: https://we.tl/t-rrqjY0tCFb

Uh, Anti-virus is coming up with a Trojan alert for that zip file. Have you scanned your PC recently for threats?

Does anyone else also get this message?

I've scanned my computer several times but can't find anything!
Mics: DPA 4061

Power: CA-UBB - SP-SPSB-10 (9V)

Recorders: Tascam DR-2d (4x)

Offline mrfender

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Re: DIY key fob battery box
« Reply #34 on: April 12, 2024, 06:36:05 AM »
I have saved the Sony Insider thread: https://we.tl/t-rrqjY0tCFb

Uh, Anti-virus is coming up with a Trojan alert for that zip file. Have you scanned your PC recently for threats?

Does anyone else also get this message?

I've scanned my computer several times but can't find anything!

No warnings for me when I downloaded it. (Windows 11/Opera browser)
DR2d, DR-44wl, DR-608, PCM-M10, Roland R-07, PCM-A10
CA-14 card/omni, AT853 cards/omni, Nak CM-300 cards/omni, Line Audio CM4

Offline shadowfax1007

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Re: DIY key fob battery box
« Reply #35 on: April 12, 2024, 08:57:27 AM »
I've redownloaded it twice and now I'm not getting a warning at all.
Maybe a false positive on the first download....but it also doesn't make sense either. How bizarre.
www.bnelive.net

Mics:
SP-CMC-2 (Cardioid & Sub-Cardioid caps)
SP-BMC-12 (Omni)
SP-BMC-1 (Omni)

Power:
SP-SPSB-10

Recorders:
Olympus LS-10
Olympus LS-12
Sony PCM-A10

Offline mrfender

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Re: DIY key fob battery box
« Reply #36 on: April 19, 2024, 09:35:42 AM »
I found some 3.5mm rubber plugs on Amazon.  Looks to help make the holes a little less obvious.

No comments on my terrible Dremel skillz.
DR2d, DR-44wl, DR-608, PCM-M10, Roland R-07, PCM-A10
CA-14 card/omni, AT853 cards/omni, Nak CM-300 cards/omni, Line Audio CM4

Offline adrianf74

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Re: DIY key fob battery box
« Reply #37 on: April 19, 2024, 10:47:48 AM »
I found some 3.5mm rubber plugs on Amazon.  Looks to help make the holes a little less obvious.

No comments on my terrible Dremel skillz.

Nicely done.  Looks pretty decent to me.  Looks like a key fob that had some wear with some buttons on the side, really. 
Mics: Neumann KK 184 capsules with nBob Actives and Naiant PFAs | Decks: Zoom F6 and Zoom F3 w/ BTA-1 | Power: Neewer NP-F750 7000mAh | Camera: DJI Osmo Action 4

Offline audBall

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Re: DIY key fob battery box
« Reply #38 on: April 19, 2024, 01:23:35 PM »
I found some 3.5mm rubber plugs on Amazon.  Looks to help make the holes a little less obvious.

I use these to plug off inputs on some of my recorders, especially the dual 3.5mm inputs that allow optical inputs as well. Peace of mind with dust and all that.
mg m20.21.23 ■ akg ck61.62.63 »  nbob■naiant
aercomp2 ■ v2∞3 ■ sx-m2d2
pcm-d100 ■ pmd661 ■ r44ocm ■ f3

Offline mrfender

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Re: DIY key fob battery box
« Reply #39 on: May 16, 2024, 09:31:17 AM »
Finally finishing it up with a ton of help from Nick.  It's ugly as hell on the inside but works just fine.  Probably order up some new supplies to make a nicer, more durable one as my soldering (lack of) skills made a mess.
DR2d, DR-44wl, DR-608, PCM-M10, Roland R-07, PCM-A10
CA-14 card/omni, AT853 cards/omni, Nak CM-300 cards/omni, Line Audio CM4

Offline shadowfax1007

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Re: DIY key fob battery box
« Reply #40 on: May 17, 2024, 08:38:49 AM »
Finally finishing it up with a ton of help from Nick.  It's ugly as hell on the inside but works just fine.  Probably order up some new supplies to make a nicer, more durable one as my soldering (lack of) skills made a mess.

Looks great for a first attempt.
What parts / schematic did you end up going with?
www.bnelive.net

Mics:
SP-CMC-2 (Cardioid & Sub-Cardioid caps)
SP-BMC-12 (Omni)
SP-BMC-1 (Omni)

Power:
SP-SPSB-10

Recorders:
Olympus LS-10
Olympus LS-12
Sony PCM-A10

Offline mrfender

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Re: DIY key fob battery box
« Reply #41 on: May 17, 2024, 09:24:41 AM »
Finally finishing it up with a ton of help from Nick.  It's ugly as hell on the inside but works just fine.  Probably order up some new supplies to make a nicer, more durable one as my soldering (lack of) skills made a mess.

Looks great for a first attempt.
What parts / schematic did you end up going with?

I used the same exact components as Nick listed at the top of the discussion.  The 3.5mm jack from Mouser is a pain but I did like he did and clipped the unused tabs off the back, filed them down and put some superglue over the remaining exposed metal to ensure I didn't get any solder on them.  Those are the only jacks I've found with the longer "neck" that would reach outside of the fob.  I found some easier to solder ones on Amazon but they will take some extra work to get the jack up to or even with the fob wall.

  Understanding the whole Tip/Ring/Sheath and where they go was the hardest part but Nick's helpful instructions are:

   Assuming you used the SJ-3541A-TR-67 connectors from mouser and you're using a standard TRS (tip, ring, sheath) plug, the sheath is the ground and spots 1 and 4 serve the sheath.  They're the outermost posts on the back.
 
   The grounds for both 3.5mm jacks will connect to one another as well as the negative terminal on the battery.

    For the jack serving the microphones, spot 3 (the middle post, for the ring of the TRS plug) will get the capacitor(+ side)/resistor, with the negative side of the capacitor going to spot 3 on the jack going back to the recorder.

    Spots 2 and 5 serve the tip of the TRS plug.  Pick one of those (either works, so I went for the one that helped space everything out as far as possible) for the second capacitor(+ side)/resistor, with the negative side of the capacitor going to either spot 2 or 5 on the jack going back to the recorder.

    The positive lead from the battery goes to the other end of both resistors.
DR2d, DR-44wl, DR-608, PCM-M10, Roland R-07, PCM-A10
CA-14 card/omni, AT853 cards/omni, Nak CM-300 cards/omni, Line Audio CM4

Offline one8ung

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Re: DIY key fob battery box
« Reply #42 on: May 24, 2024, 02:49:20 AM »
Used a small piece of circuit board for the 3,5mm stereo jack to the mics, the resistors and the capacitors.

For the second 3.5mm stereo jack to the recorder I used a built-in plug to get some space in the wiring.
Mics: DPA 4061

Power: CA-UBB - SP-SPSB-10 (9V)

Recorders: Tascam DR-2d (4x)

Offline DavidPuddy

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Re: DIY key fob battery box
« Reply #43 on: May 24, 2024, 10:26:18 AM »
These things are simple enough that they can be built point to point if you're able.
Mics: mk4v/mk41v/mk22 > CMC1L/Nbobs, MKE2
Preamps: Nbox Platinum ABS, Baby Nbox
Recorders: Mixpre-6 ii, PCM-A10

Offline mrfender

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Re: DIY key fob battery box
« Reply #44 on: May 27, 2024, 07:03:26 AM »
So first time out with the box and it worked great.  Turns out I didn't need super stealth mode as they use Evolve (or similar) and didn't have to remove anything from my pockets.  A little disappointed by the recording as I was right behind the soundboard and the vocals are a little distant. I'll blame the sound guy and not my impeccable recoding abilities.  :yack:

Question for the knowledgeable people - I'm running a pair of CA14s with 12v instead of the more typical 9v.  They seem to like it as I've had good results when the sound mix at the show is good.  As the battery slowly drains from charged to dead, will I get the same signal quality as it goes from 12v to 9v?  As long as it's at least 8-9v or better should it be good?
DR2d, DR-44wl, DR-608, PCM-M10, Roland R-07, PCM-A10
CA-14 card/omni, AT853 cards/omni, Nak CM-300 cards/omni, Line Audio CM4

 

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