Wireless and/or USB phone charging - Jeep Garage - Jeep Forum

Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > 2011+ Dodge Durango-WD

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 09-24-2014, 10:02 PM
Member
 
Join Date: Sep 2014
Posts: 264
Thanks: 17
Thanked 48 Times in 38 Posts
Rep Power: 7449
michaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond repute
Wireless and/or USB phone charging

Recently got Durango.

I also looked at the Grand Cherokee but Durango was what I went with.

Probably the only thing I found "missing" from the Durango that I could have gotten in the GC was wireless charging. I have phone with Qi built in and a wireless charger at home and I love it.

So I started investigating a wii charger to toss in the small bin by the SD card reader.

I looked at like a bajillion chargers trying to find a unit which obviously was "the one" from some web page. Never exactly find one that was obviously perfect but then i stumbled on to "DIY" qi chargers on amazon (and ebay). Basically it's the guts of one of these qi chargers. So I picked up this one to play with- Amazon.com: Mikobox Qi Wireless Charger PCBA Circuit Board Wireless Charging Pad For DIY (3 Coil): Cell Phones & Accessories - looked cool that it had 3 coils so i wouldn't need to be so precise where i placed the phone. And it was Prime- so i could get it quick to play with- that's the kind of guy I am- lol.

It's actually pretty cool that you can just lay it UNDER the mat in that bin and it will charge right through the mat. I was afraid that since the bin is tapered out from the bottom that the mat would seem too small once it raised up but in the end it really wasn't. One positive of this particular charger is the little daughter board with the led charge indicators. Has a tiny red led to indicate power (steady) or errors (blinking). And a tiny blue one that lights when you have your phone positioned 'close enough'. My phone (a droid maxx) sideways fits pretty well in the skinnier part of the bin right in front of the sd card and usb charger. Found that even with my phone fitting pretty well in that spot that the fraction of an inch it has to move around is a enough to make it not be in the right location- so glad i got the LED's to help indicate.

So i moved on to the next step of figuring a permanent way to power the charger. I plan to drill a hole in the console under the mat and tap into some power elsewhere.

Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old 09-24-2014, 10:16 PM
Member
 
Join Date: Sep 2014
Posts: 264
Thanks: 17
Thanked 48 Times in 38 Posts
Rep Power: 7449
michaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond repute
Where's the 5v power?

So -

i went on to search for the source for 5v usb power to get me powered up.

I started with reading this thread to learn how to get into the console to see about digging into the usb next to the sd card:
10 minute foot well RGB LED ambient lighting. Figured that was sure fire and right there.

But i also thought i didn't want to much with the usb port which was connected to the radio directly- if something went wrong with my fine Chinese made charger i was/am leary it will blow up the radio or at least ruin the usb port. So i thought might be best to dig into the rear USB charging ports as they are charge only and not related to the radio.

So i dug into this thread here to learn a little about getting into the read of the console My guide to replace CD player center bin with large bin - it's for a GC but same steps for us. So I started really pulling apart there. It's pretty straight forward but i would add that the covers on the 10mm bolts have a 'prong' on all 4 sides. But the front and back are only to align- the two that bite are top and bottom- so pry at the top and bottom. I'd also add- when your seven year old daughter 'helps' you with removing the armrest screws be sure to grab them all as it will take you a good hour to fish out any you drop afte they roll under the console and carpet- lol.

The rear USB wound up having zilch for slack in the wires and i did manage to unhook the connector and pop out the usb assembly to see if maybe it had some sort of a standard connector that i could add onto in a Tee fashion. But it's an oddball proprietary thing so I started thinking not worth the effort and went to dig back in the front half of the console againg.
Reply With Quote
  #3  
Old 09-24-2014, 10:22 PM
Member
 
Join Date: Sep 2014
Posts: 264
Thanks: 17
Thanked 48 Times in 38 Posts
Rep Power: 7449
michaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond repute
That was easy.... or is it...

so back up front to the usb/sd card area. I started with the lighting mod thread to see how to pull the side panels off partially. That didn't really work well enough for me to see what was going on with the front usb.

So i discovered that actually all you need to do is open the armrest and pry the center console up there. The whole thing pops right up- shifter, transfer case knob, cub holder et all- it's all just electronic's attached to the top of the console cover and comes right up in a giant piece.

Dug around quickly and found that the sd card/usb port is fed by a cable that comes out of the back of that unit and then makes a hairpin turn back towards the read of the unit. a few inches in front of the bin it has a connecter. So i opened that up and what do you know it's just a mini usb assembly.

So i figured at that point i could just get a usb hub feed it from the mini usb and then run one leg out to my charger (it's micro usb powered) and then another leg back to the sdcard/usb port connector.

So that let me to ponder- is there enough power in that mini usb cable to power a hub and my qi charger....
Reply With Quote
  #4  
Old 09-24-2014, 10:43 PM
Member
 
Join Date: Sep 2014
Posts: 264
Thanks: 17
Thanked 48 Times in 38 Posts
Rep Power: 7449
michaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond repute
...and it isn't (all about the usb "charging" ...)

So i broke out my trusty USB amp meter. BESTOPE Dual-USB Output Charging Detector Digital LED Ammter Voltmeter Guage DC Display 3.2-10V 0-3A Red/Blue - - Amazon.com

I know from previous bad experiences that USB power is not USB power is not USB power. First up there's all sorts of different amp chargers. Old flip phone chargers were like 350-500 mA. Whereas a new smartphone/iphone charger might be 2 or 3 amps.

Turns out the radio's usb port puts out somewhere around 1.5 amps (sorry i forget exact numbers at the moment). That might be a 'decent' charge rate to charge via usb directly but these qi chargers are more like 50-80% efficient so if you want the needle to move on your phone while charging with wireless you need to feed the qi 2amps so it can max out the wattage to the phone.

So back to the read ports- i figured they're just 'dumb ports' so hopefully chysler specs something that spits out 2+ amps so you can charge an ipod of the like. ICK- those ports are more anemic then the front port. They do just about 1 amp. From yanking the connector i surmised 2 different circuits (which is a good thing so you aren't splitting the power if you connect 2 devices)- and the amp meter indicates that is the case since they both have different readings. One of mine is actually 0.1 amp less than the other.

So none of the 3 usb ports are going to charge a modern smartphone as fast as possible.

While I happened to have the meter out i also checked how the USB negotiates power. I'm not an expert but my basic understanding is if you connect your phone into a computer/laptop then the phone initially only sucks 0.5 amps. It then requests from the computer/laptop 'hey can i get more power?' and they negotiate an acceptable level- depends on the version of USB and the like but a computer/laptop will never punch out 2+amps and that's why a tablet wont charge for spit off your laptop. If the usb port is a non-computer device then they can short some pins- or toss in a resistor or something accross the data wires and the phone will suck every last bit of power that it can and that the charger can provide.

I need to double check but seems NONE of the 3 ports negotiate or will allow your phone to suck anything more than 0.5amps if your phone is using a data cable. You can buy a cable like this (or your wallwort charger might have come with one) - http://amzn.com/B00HAAPREM where the manufacturer futzes with the data pins to tell the phone to suck away. I confirmed with a cable like that, that the phones will max out the port. I need to dig for a known good data cable to try again but the one i had nailed all 3 ports at exactly 500 mA so the proper negotiation was not occurring. It was pretty start since the the back ports in particular bounce around all over with the amps measures but with the data cable and a phone it was nailed at 500.

So best bet if you want to charge your smartphone fast is to use a cigarette lighter adapter. Or plug a wallwort into the 110 outlet at the back of the console. It will deliver at least 2 amps that way.
Reply With Quote
The Following User Says Thank You to michaelk For This Useful Post:
  #5  
Old 09-24-2014, 10:55 PM
Member
 
Join Date: Sep 2014
Posts: 264
Thanks: 17
Thanked 48 Times in 38 Posts
Rep Power: 7449
michaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond reputemichaelk has a reputation beyond repute
back to the qi drawing board

so I'm still playing around but i think I'll just grab a $10 12v->5v converter
Amazon.com: RioRand(TM) DC/DC 8-24V to 5V 3A Cable Step Down Power Converter 1 Meter Cable with Micro USB Head: Electronics
and connect to the 12v feed in the console to the cigarette lighter. Less wires and money then the usb hub and adapters and all that anyway.

While i had the amp meter out i played around with the qi charge pad a bunch and i learned that just because the qi is connected doesn't mean it's full charge- i could make the amp draw change A LOT by sliding the phone around just a little bit. I'm talking moving between a low of like .6 or .7 amps up to more like 1.9.

Originally i also ordered a single coil charger to experiment with - i AM curious if they're all equal or not. But now that i learned that you have to be so precise with the placement i think a single coil optimized might be best (and now i undersand why the jeep 'wireless' charger looks like it comes with a Halo Brace for the phone.

I originally ordered one of these single coils from amazon at the same time Amazon.com: Docooler®Qi Wireless Charger PCBA Circuit Board with Qi Standard Coil DIY Wireless Charging Accessory Micro USB Port: Cell Phones & Accessories but it's apparently coming from china so wont be here for weeks. So I found a similar one on ebay that supposedly shipped form within the US.

I'll experiment with all 3 when i have time.

Eventually I'll also order the 12v-5v adapter and hard wire the best one in under the mat (figure i'll need to hot glue it in place and maybe even put 1-4 rubber stick on bumpers on top of the mat to orient the phone in the exact position.

I still live wireless charging and not having to fumble with wires but looks like it is going to take a little longer.

Work is picking up and this weekend I am starting to install my front camera and the RAX lockpick. Also want to toss in some led footwell ligthing and have a few bits of stuff from amazon to experiment with there. But once i circle back to final qi install i'll try to remember to post back.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Are the rear USB ports intended for charging only? Roadkill Audio/Visual/Navigation 20 09-20-2016 08:42 PM
Adding rear USB charging points to laredo seedar Export Grand Cherokee 2011+ 8 12-21-2014 06:52 PM
Mounts / Wireless charging pad wsoldier Audio/Visual/Navigation 5 04-02-2014 06:01 PM
Charging with the USB ports BobT Audio/Visual/Navigation 3 09-10-2013 07:50 AM
Media Center/uconnect and Verizon Wireless HTC Incredible ccb2023 Audio/Visual/Navigation 2 01-16-2011 04:26 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 04:39 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by FCA US LLC. Chrysler, Dodge, Jeep, Ram, Mopar and SRT are registered trademarks of FCA US LLC.