04-18-2014, 02:08 AM | #1 |
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Hardwiring a 5v dashcam DIY
This DIY is a little different from the normal dashcam or radar detector install previously documented in these forums.
I wanted to install a very small and stealthy dash cam and I didn't want to use any of the of the 12V sockets nor run the wire all the way around the body of the car from the fuses. I reviewed the excellent installation job posted by JBM and shawnsheridan about tapping into the switched power in the rear view mirror housing. That was exactly what I wanted! But, the camera I have (the Mobius ActionCam) is powered by a 5V mini-USB connector and putting 12V into that would fry the camera. I found a really small DC to DC converter on ebay that would fit inside the rear view mirror housing. All of the others were way too big or tall. This converter takes 5-28VDC in and has an adjustable output from 1.3 to 17VDC. I just had to adjusted it to 5 volts. My brother, who designs power supplies for a living, tested this little gem and the voltage was very stable (2mV between 0 and 1000mA load) and heat output was very low; only about 22 degrees F above ambient at 500mA load. Perfect! Here is a picture of the converter with a 90 degree mini-USB cable connected to it. I used quick disconnect leads on the supply side so I could remove it easily if needed to. I covered the circuit board with heat shrink tubing to protect the converter before I installed it. Installation was pretty straightforward. 1. Remove the rear view mirror housing. Just slide a plastic card into the seam and separate. It comes apart fairly easily. 2. I attached the shrink tubed converter to the rear view mirror housing with 3M double sided sticky tape so it wouldn't move around and I anchored the USB cable to the housing with a sticky clip for strain relief. 3. I tapped into the switched 12V and ground wires in going into the rear view mirror as others have. I didn't use invisi-cord, I just got some small wire splices and tapped into the wires. There isn't a lot of room to work up there, but this step went fine. 4. I then just connected the quick connects, tested the power, and reinstalled the rear view mirror housing. It just snaps back together. 5. Finished. I wasn't able to put the camera any closer to the mirror housing because I didn't want to block the auto-headlight sensor on the mirror. Parts List: Camera: http://www.amazon.com/Angle-Mobius-A...7882494&sr=8-3 Low-profile mount: http://www.amazon.com/Adhesive-threa...8006039&sr=8-3 DC-DC Converter: http://www.ebay.com/itm/Mini-3A-DC-D...item3cd868cc79 Right-angle USB cable cannibalized from this: http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1 Quick connects: http://shop.ballardsupply.com/MOLEX-...625-1PRT-P.htm Splices: http://www.amazon.com/JT-Products-12.../dp/B003HULGY4 Miscellaneous black/yellow wires came from a spare PC 4-pin Molex HDD power cable. Last edited by Frogman; 06-19-2014 at 04:01 PM.. |
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04-18-2014, 08:57 PM | #2 |
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Can you share links for the various parts for those who might want to do this?
Would it be possible to place it on the drivers side as it seems it could be fully hidden by the rear view mirror? Thanks! |
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04-18-2014, 10:02 PM | #4 |
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Nice job!
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04-18-2014, 11:57 PM | #5 | |
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I originally looked at putting the camera on the drivers side, but with the rear view mirror in it's normal position, there just wasn't any room to mount it and keep it hidden and still allow for the power cable to be plugged in. Last edited by Frogman; 04-19-2014 at 11:07 PM.. |
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04-19-2014, 12:01 AM | #6 |
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Thanks. Your post on wiring your radar detector gave me the idea.
I added the USB cable strain relief clip based on reading your episode of shorted wires when you suction cup failed. It would have given me a heart attack to see smoke coming out of my mirror housing! |
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04-19-2014, 07:45 AM | #7 | |
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04-19-2014, 10:49 PM | #8 | |
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Last edited by rdubmd; 04-19-2014 at 11:01 PM.. |
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09-10-2014, 04:17 PM | #11 | |
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The only thing I might be worried about is total current draw. The Mobius only uses about 2-1/2 Watts (500mA at 5V). How much juice does the radar detector use? |
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09-10-2014, 04:19 PM | #12 | |
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It seems the max is about 500mA at ~12V for the Valentine 1. |
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09-10-2014, 04:32 PM | #13 | |
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09-13-2014, 05:57 AM | #15 | |
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http://f30.bimmerpost.com/forums/sho...d.php?t=681146 |
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09-21-2014, 06:30 PM | #16 | |
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12-15-2014, 10:36 PM | #18 |
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Do you have automatic high beams? I see you have that camera in the rear view bezel, I dont have that option and im thinking of ordering that bezzle and hiding the camera in there.
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Last edited by ilyabarankevich; 12-16-2014 at 12:42 AM.. |
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12-16-2014, 10:06 AM | #19 | |
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12-18-2014, 12:19 AM | #20 | |
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I see your point that it will be hard to access... maybe i can velcro the unit it self to the side of the cover and run the camera to that opening on the inside. That way i can get to the memory card easier...
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12-18-2014, 01:11 AM | #21 | |
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I ultimately rejected the idea because the camera was too visible and blocked part of my view out the window. Like you, I didn't want my camera easily visible. Where I have my camera now (tucked under the right hand side of the mirror) does not block my view and is virtually invisible from the outside. |
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