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  1. #1
    Student
    Join Date
    Jan 2014
    Location
    Nevada
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    46

    Another 3D printed working machine.

    I have been working on this one for a while.
    Hand cranked
    Output - 5v dc
    USB ready
    Works good as a cell phone charger.
    Attached Images Attached Images

  2. #2
    Banned
    Join Date
    Oct 2013
    Posts
    259
    Wow, that is pretty darn cool! Do you have a video of this being used? Did you design it yourself? How much charge does it actually give your phone?

  3. #3
    Student
    Join Date
    Jan 2014
    Location
    Nevada
    Posts
    46
    Thanks.
    I don't have a video yet. The charge PCB outputs 5v dc and 3 amps maximum. The dynamo makes 0-30 volts with just the 3 phase rectifier attached. I still have a lot of testing to do to get all the performance data. If my wife would sit still long enough for me to charge her phone I would know more about how long it would take to make a difference on a phone battery. I did run it on her phone for about a minute or so and the phone battery causes a hefty drag on the dynamo so I assume it is doing a good job of charging. I will know more soon.

  4. #4
    Banned
    Join Date
    Oct 2013
    Posts
    259
    Cool, keep us post. It acuatally looks nice too


  5. #5
    Student
    Join Date
    Jan 2014
    Location
    Nevada
    Posts
    46
    Finally got my USB voltage and amperage tester so I will have a video of it all up soon.

  6. #6
    Student
    Join Date
    Jan 2014
    Location
    Nevada
    Posts
    46
    Heres a short video of the charger working. The output depends on the load up to 3 amps. The phone took 4.5-5 volts dc and .14 to .2 amps.
    https://www.youtube.com/watch?v=fYcMc6--GSE

  7. #7
    Student
    Join Date
    Jan 2014
    Location
    Nevada
    Posts
    46

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