Cyclegear has a nice USB power outlet.

https://www.cyclegear.com/accessories/trackside-usb-outlet

I have them mounted in my truck as well.

David

On Sat, Jul 30, 2016 at 4:13 PM, Donald Jacob <wb5eku@gmail.com> wrote:
I am using both types and they are great. Well worth the price and more reliable than
a wallwart. Cleaner DC voltage also.

Don
WB5EKU


On Sat, Jul 30, 2016 at 12:58 PM, Bob Prybyzerski <w2ymm1@gmail.com> wrote:
I've been using this type
https://www.ebay.com/itm/221667524607
And have had good luck.


Sent from my iPhone
Bob Prybyzerski
631-960-1051
W2YMM

> On Jul 30, 2016, at 3:51 PM, Ramesh Dhami <Ramesh@va3uv.com> wrote:
>
> Hi Guys:
>
> I am presently running my Pi from a walwart supply.  I'd rather run the Pi from my station supply, using a DC to DC converter.
>
> I recall this topic being discussed before - but can't put my finger on the reference converters at this time.
>
> I have found these devices on Amazon, wonder if anyone has any experience with them:
>
> https://www.amazon.com/Autek-Converter-convert-adapter-DCCON-5U-0/dp/B00BMIVFK8
>
> Thanks!
>
> Ramesh.
>
> Sent from my iPhone
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