Solar charging the iPad: Project

Discussion in 'iPad' started by troop231, May 7, 2010.

  1. troop231 macrumors 603

    Joined:
    Jan 20, 2010
    #1
    Anyone using a solar charger for their iPad? I'm thinking about making my own and it should be pretty cool when I'm finished. Just wanted to know what others are doing. :)
     
  2. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #2
    is this possible to do? it would be a wonderful invention :D i might want in!
     
  3. troop231 thread starter macrumors 603

    Joined:
    Jan 20, 2010
    #3
    Yes, I just got some sample regulating chips in and I'm building this covered in solar cells :D :

    A solar tetrahedron idea

    [​IMG]
     
  4. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #4
    can you guarantee the minimum power requirements?
     
  5. troop231 thread starter macrumors 603

    Joined:
    Jan 20, 2010
    #5
    Indeed, 5 Volts at 1 Ampere
     
  6. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #6
    aahhh ok. awsome :D
     
  7. troop231 thread starter macrumors 603

    Joined:
    Jan 20, 2010
    #7
    I still need to get the wood and a few electronic pieces. I will post an instructable when it's done most likely. The nice thing about the shape is that it's four identical pieces to make.
     
  8. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #8
    haha please do, and specs on the panels that you used etc. :p
     
  9. Streethawk macrumors 6502

    Joined:
    Feb 25, 2010
    Location:
    Manchester, UK
    #9
    Worth noting that off the shelf solar chargers aimed at mobile phones wont be up to the job.
     
  10. troop231 thread starter macrumors 603

    Joined:
    Jan 20, 2010
    #10
    These are the cells I'm going to try first, since I can't find any triangular shaped cells, and don't really want to risk cutting and breaking larger cells.

    4 cells on each side for a total of 12 cells in the array.

    Cells are 2.4" by 2.4" square each.

    [​IMG]
     
  11. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #11
    fair enuf. interesting. how much do they cost roughly?
     
  12. troop231 thread starter macrumors 603

    Joined:
    Jan 20, 2010
    #12
    $8.95 for 4. I can probably get cheaper in bulk though. I'm still hunting for cells with more amps.
     
  13. dstar macrumors regular

    Joined:
    May 3, 2010
    #13
    It would be really nice if you could meet the requirements of using it while charging. I don't know how large those panels would be though.
     
  14. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #14
    oh is that all!!!! schweeet
     
  15. danpass macrumors 68020

    danpass

    Joined:
    Jun 27, 2009
    Location:
    Miami, FL
    #15
    at 25,000 mAh wouldn't you need ISS-sized panels? :D
     
  16. troop231 thread starter macrumors 603

    Joined:
    Jan 20, 2010
    #16
    Lol, The iPad power brick does 2000 mAh output which won't be very hard at all. I just want to make this project cost effective.
     
  17. troop231 thread starter macrumors 603

    Joined:
    Jan 20, 2010
    #17
    Question to all interested.. What's the biggest size of something like this you would mind using? Asking because it's gonna take a few cells to achieve the voltage required.
     
  18. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #18
    to be honest, anything that is 2x the size of the ipad would be too large.

    if you could make it foldable, say use 4 cells the size of the ipad - which then fold out.. that would be cool :)

    oh oh do this or this!
    [​IMG]
    [​IMG]
     
  19. troop231 thread starter macrumors 603

    Joined:
    Jan 20, 2010
    #19
    Hmm, I like that first pic. That should collect quite a bit of sun since it's almost parabolic in nature.
     
  20. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #20
    yes i thought it would be pretty efficient :D do you think it would work and fold up ok? would each panel roughly the size of an ipad produce enough power?
     
  21. troop231 thread starter macrumors 603

    Joined:
    Jan 20, 2010
    #21
    They should fold ok. Do you think demand would be great for these?
     
  22. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #22
    demand would be steady, but it wouldnt be a hit product to be honest with you.

    i would certainly consider buying one though!
     
  23. troop231 thread starter macrumors 603

    Joined:
    Jan 20, 2010
    #23
    What about two USB ports for charging the iPhone too? Just a thought, don't know if it'd work yet.
     
  24. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #24
    could work. im presuming the iphone requires a lot less amperage to charge but similar voltages?
     
  25. troop231 thread starter macrumors 603

    Joined:
    Jan 20, 2010
    #25
    Yes, about 1/4 less Amps lol
     

Share This Page