1. Due to the recent site upgrade, the iPadForums (iPF) App will no longer work. The new iPadForums.net website has been designed from the ground up to work perfectly from any mobile, tablet, or desktop computer using the built in internet browser. Create a shortcut to iPadForums.net on your home screen by following these steps: Create an icon for iPadForums.net

iPad 2 DIY Charger

Discussion in 'iPad DIY' started by timothyb1969, May 8, 2011.

  1. timothyb1969
    Offline

    timothyb1969 iPF Novice

    Joined:
    May 8, 2011
    Messages:
    11
    Thanks Received:
    1
    Trophy Points:
    0
    Ratings:
    +1 / 0
    I went through the design and built (3) of these so far. Hope this helps other do it yourself enthusiasts. Details can be found at timothyb.net
  2. wytey
    Offline

    wytey iPad Junkie

    Joined:
    Mar 29, 2011
    Messages:
    768
    Thanks Received:
    7
    Trophy Points:
    0
    Location:
    UK
    Ratings:
    +7 / 0
    amazing, good info, should be stickied!
  3. Tim SPRACKLEN
    Offline

    Tim SPRACKLEN iPad Legend

    Joined:
    Jan 3, 2011
    Messages:
    15,246
    Thanks Received:
    121
    Trophy Points:
    0
    Location:
    Scotland
    Ratings:
    +121 / 0
    Great design - many thanks. I like the fact that you've included the calculations too!! I wonder if there'd be enough interest to have a screen PCB design done? Let's see how many posts this thread attracts!!

    Tim
  4. Hasty
    Offline

    Hasty iPad Ninja

    Joined:
    Jun 2, 2010
    Messages:
    2,282
    Thanks Received:
    22
    Trophy Points:
    38
    Location:
    Location
    Ratings:
    +22 / 0
    Well done.
    Both for the design and for the presentation on your webpage.

    Doubt my wife will let me hack into the dashboard though...
  5. Tim SPRACKLEN
    Offline

    Tim SPRACKLEN iPad Legend

    Joined:
    Jan 3, 2011
    Messages:
    15,246
    Thanks Received:
    121
    Trophy Points:
    0
    Location:
    Scotland
    Ratings:
    +121 / 0
    Yes - but you could make it into a unit that connects between the 12 volt outlet and a floating USB socket. I was going to suggest getting my students to design the PCB but then I thought the better of it.....:D

    Tim
  6. timothyb1969
    Offline

    timothyb1969 iPF Novice

    Joined:
    May 8, 2011
    Messages:
    11
    Thanks Received:
    1
    Trophy Points:
    0
    Ratings:
    +1 / 0
    Reply

    Thanks everyone for the feedback. I did the work and decided to spend the time to share it with others should anyone want a cool project that is also very useful in the car.

    You could apply this design to a floating 12 socket (cigarette lighter) with a cable going to a usb plug. My design objectives were to
    1> Not use the cigarette lighter because it is big, bulky and stick out.
    2> I wanted to keep the number of adapters, plugs, etc to a absolute minimum.
    3> I wanted them to be panel mount so that all the electronics are hidden behind the dash.
    4> I needed multiple plugs for her. I originally had just two and expanded to (4) as she would sometimes need to plug (3) items in. (i.e. her iphone, her bluetooth headset, and her GPS). Now if I am I am in the car with my iPad or iphone on a trip, even more reason for having (4) outlets.

    Some might say excessive but we use them. And since the plugs I selected are dual usb, I only had to panel mount two connectors to get (4) usb plugs. And each one can supply 5vdc/2A/10W needed to operate and power an iPad 2.
    I considered a PCB. You can buy kits from Radio Shack or I am sure from Digi-key or Newark Electronics but I was not sure how wide each trace would have to be to be able to carry the full current at 12vdc and 5vdc/2A. It would be great if someone who had this knowledge could add to this post because wiring and soldering it by hand was a challenge and you can see from the pictures that is was not pretty although funtional and plenty of current carrying capacity. Especially worth it if someone was going to make more than one the time to layout the board would be worth it maybe.
    • Like Like x 1
  7. Thehamguy1
    Offline

    Thehamguy1 iPF Novice

    Joined:
    Mar 20, 2011
    Messages:
    54
    Thanks Received:
    0
    Trophy Points:
    0
    Ratings:
    +0 / 0
    Nice work! You don't happen to be a ham radio operator do you? A lot of folks interested in electronics are. A question: Does the regulator get hot with long use, and would you recommend adding a heat sink to it?
  8. timothyb1969
    Offline

    timothyb1969 iPF Novice

    Joined:
    May 8, 2011
    Messages:
    11
    Thanks Received:
    1
    Trophy Points:
    0
    Ratings:
    +1 / 0
    Thanks for your comment TheHamguy1. This dc to dc co converter does not require a heat sink per it's specifications. Now I am not sure about how hot it gets. Since it does not require a heat sink I would not expect it would get that hot but I would want at least a little air around it cause it will give off some heat. I will try it in my truck next time a take a long enough drive and will get back to you.

    I did make a mistake in my last post when I said the each USB adapter can supply 5v/2A. Each converter can supply 5vdc/2A/10W total for both ports combined. Since the iPad 2 requires this amount of power all by itself, when charging an iPad, you may not have enough power to charge another device. You definitely cannot plug two iPad 2's I to the same module as this would require 4A which this unit is not capable of supplying.

    So if you will need to charge two iPads at the same time, you will need two dual port USB chargers.
  9. timothyb1969
    Offline

    timothyb1969 iPF Novice

    Joined:
    May 8, 2011
    Messages:
    11
    Thanks Received:
    1
    Trophy Points:
    0
    Ratings:
    +1 / 0
    Oh. Forgot to answer your question. I am not a ham radio operator but I am a EE and I am always making stuff for myself when I cannot buy.
  10. Tim SPRACKLEN
    Offline

    Tim SPRACKLEN iPad Legend

    Joined:
    Jan 3, 2011
    Messages:
    15,246
    Thanks Received:
    121
    Trophy Points:
    0
    Location:
    Scotland
    Ratings:
    +121 / 0
    This Java script calculator seems to do a pretty decent job of calculating how much current a particular PCB trace can carry - with a significant number of optional inputs too.

    The CircuitCalculator.com Blog » PCB Trace Width Calculator

    Tim
  11. David79
    Offline

    David79 iPad Junkie

    Joined:
    Jan 11, 2011
    Messages:
    758
    Thanks Received:
    3
    Trophy Points:
    0
    Location:
    NH
    Ratings:
    +3 / 0
    Ok I have no clue at all what any of you are talking about lmao but very nice job, looks sweet and very functional.

    Sent from my iPad using iPF
  12. graywolf
    Offline

    graywolf iPad Super Guru

    Joined:
    Aug 22, 2010
    Messages:
    3,655
    Thanks Received:
    35
    Trophy Points:
    0
    Location:
    Raleigh, NC USA
    Ratings:
    +35 / 0
    Very cool!
    I am pretty good at soldering and have always loved doing stuff like that.
    A simple thing I did was extend the charger cable because it is very short. :)
    So instead of being 3 feet, it is now 10 feet!
  13. biobunny
    Offline

    biobunny iPad Junkie

    Joined:
    Feb 14, 2011
    Messages:
    913
    Thanks Received:
    17
    Trophy Points:
    0
    Ratings:
    +17 / 0
    Or you could buy a few Apple Wired Keyboards and then use all of the USB keyboard extenders. And as a bonus it will look good :).

    Sent from my interestingcompanionPad using iPF!
  14. Tim SPRACKLEN
    Offline

    Tim SPRACKLEN iPad Legend

    Joined:
    Jan 3, 2011
    Messages:
    15,246
    Thanks Received:
    121
    Trophy Points:
    0
    Location:
    Scotland
    Ratings:
    +121 / 0
    I always feel I'm missing something here. Why is the length of the USB charger cable ever an issue? Why do people go to so much trouble to extend its length? Why not simply purchase a longer power cable - i.e. the cable from the power outlet to the charger - rather than extend the length of the USB charger cable from the charger to the iPad?

    Even if you're using the charger with the 'built in' power outlet connector, this is detachable and then reveals an international standard IEC two-pin connector, to which any IEC power cable (available from Radio Shack) can be attached.

    What am I missing?

    Tim
  15. graywolf
    Offline

    graywolf iPad Super Guru

    Joined:
    Aug 22, 2010
    Messages:
    3,655
    Thanks Received:
    35
    Trophy Points:
    0
    Location:
    Raleigh, NC USA
    Ratings:
    +35 / 0
    1. I used to just extend the power adapter but it gets annoying when you have a brick in the middle of the line.
    2. A longer USB cable also = a longer sync cable.
    3. I was bored.
    4. Why buy a cable when I have extra wire? I can extend it for about $1.50. Otherwise, buying a cable for $5-$10.
  16. Tim SPRACKLEN
    Offline

    Tim SPRACKLEN iPad Legend

    Joined:
    Jan 3, 2011
    Messages:
    15,246
    Thanks Received:
    121
    Trophy Points:
    0
    Location:
    Scotland
    Ratings:
    +121 / 0
    Sounds good to me - I bow in the presence of a master...

    Tim
  17. graywolf
    Offline

    graywolf iPad Super Guru

    Joined:
    Aug 22, 2010
    Messages:
    3,655
    Thanks Received:
    35
    Trophy Points:
    0
    Location:
    Raleigh, NC USA
    Ratings:
    +35 / 0
    ...?

    Master? Your a mod. Beat me by 1 rank. :)
  18. miket5au
    Offline

    miket5au iPad Fan

    Joined:
    Apr 17, 2011
    Messages:
    127
    Thanks Received:
    3
    Trophy Points:
    0
    Location:
    Canberra
    Ratings:
    +3 / 0
    Is it only one rank? He has an extra battery as well :)
  19. graywolf
    Offline

    graywolf iPad Super Guru

    Joined:
    Aug 22, 2010
    Messages:
    3,655
    Thanks Received:
    35
    Trophy Points:
    0
    Location:
    Raleigh, NC USA
    Ratings:
    +35 / 0
    Master is as far as it goes. He is a mod. One rank. :D
    Yes, one battery. He is better at dealing with stupid people.

    If I was a mod, every stupid person who posts in the wrong section or asks how to jailbreak an iPhone would be banned. :D
    Not really.

    And he has over 7,000 posts. I have 2,000
  20. David79
    Offline

    David79 iPad Junkie

    Joined:
    Jan 11, 2011
    Messages:
    758
    Thanks Received:
    3
    Trophy Points:
    0
    Location:
    NH
    Ratings:
    +3 / 0
    LMFAO!!!

    Sent from my iPad using iPF

Share This Page

Search tags for this page
2 amp phone charger diy circut
,
build your own ipad car charger
,
diy charger for ipad
,
diy ipad car charger
,

diy ipad charger

,
diy ipad mini chrging schematics
,
homemade ipad charger
,
how to design your ipad charger
,
how to make an ipad charger
,
how to make your own easy ipad charger
,
ipad 2 charger circuit
,
ipad 4 charge circuit
,
ipad car charger diagram
,
ipad charger circuit
,
ipad charger diagram
,
ipad charger schematic
,
ipad usb power supply diy
,
ipad2 charging usb male sodering diagram
,
iphone car charger wiring diagram
,
portable ipad charger circuit diagram