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Open ChargePort

Discussion in 'Model S: Battery & Charging' started by Fuzzylogic, Sep 4, 2013.

  1. TonyWilliams

    TonyWilliams Active Member

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    #21 TonyWilliams, Sep 11, 2013
    Last edited: Sep 11, 2013
    The card is coming to you US Priority Mail. You're welcome to put three test leads in the annotated spots. Please use the correct colors, if you can, just to keep things easy to follow along. The antenna outputs U1 at R5 to loop around the card (U1 pins 3 and 4):

    Blue - 3.3 VDC
    Green - Ground
    Orange - Proximity


    befe3d33-79cb-4a9d-8b6f-106c0553ec90.jpg



    http://www.silabs.com/Support%20Documents/TechnicalDocs/Si4010.pdf


    U1:

    image-5.jpg



    U1 Programming Mode

    image-6.jpg
     
  2. Fuzzylogic

    Fuzzylogic EU Sport 359 & S94

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    The Center wire is ground.
    Green must be the Proximity wire.
     
  3. TonyWilliams

    TonyWilliams Active Member

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    Of course, and I have them backwards!!!

    From top to bottom should be Power 3.3 VDC "blue", Ground "green" and Proximity "orange".
     
  4. Fuzzylogic

    Fuzzylogic EU Sport 359 & S94

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    For the DIY-ers:

    The original design, used a PIC 12F1822 microcontroller.
    Now i also created a version for the cheapest version available from microchip, the PIC 10F200.
    It can be downloaded here
     
  5. lolachampcar

    lolachampcar Well-Known Member

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    Tony,

    Will do and thank you. I did see the thermals on the "Green" and figured that was ground. I normally will confirm power and ground off the ICs prior to trying to power anything up.
     
  6. necho

    necho Member

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    Thanks a lot Fuzzylogic, I'm very pleased by your great work ... have used your program and put everything together, happily I had a type 2 cable that had a unused metal button. So I opened it up and build everything into the switch, happily it was small enough. Here are the pictures ...

    2013-09-19 21.55.29.jpg
    2013-09-19 21.56.08.jpg

    that's the type two I got with the metal switch on top

    2013-09-19 21.59.10.jpg

    and that's the way everything fit in there

    2013-09-19 22.51.33.jpg

    ... and it works fantastic!! hope the battery last some time!!

    Many thanks again to Fuzzylogic!!
     
  7. Fuzzylogic

    Fuzzylogic EU Sport 359 & S94

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    Cool!
    Great that you got it to work, and thanks for sharing the pictures!

    Never seen a Type2 connector with the buildt in switch. Where did you get this?
     
  8. necho

    necho Member

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  9. Ben W

    Ben W P85 #61, Roadster #108

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    It wouldn't have to. It already communicates with the car, so it could tell the car to open the charge port, say with a triple-tap or tap-and-hold; it wouldn't have to interface with the charge port directly. I requested this feature a year ago, and I guess it never got anywhere. Alas, maybe one day.
     
  10. zax123

    zax123 CDN Model S P308

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    Very good point, my brain must have been in sleep-mode that day. :)
     
  11. lolachampcar

    lolachampcar Well-Known Member

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  12. lolachampcar

    lolachampcar Well-Known Member

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  13. L@urens

    [email protected] Family, Racing, Karting, MTBing

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    I anyone planning on selling a 'complete' version, that is: in a (tiny) housing?
     
  14. lolachampcar

    lolachampcar Well-Known Member

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    Right now I am working with the OpenEVSE guys to do a board that fits in the OpenEVSE box. We are looking at ways to get the button on the 1772 handle to actuate the transmitter (not looking good right now), put a button on the box itself or have a key fob dongle type thing hanging from the handle to make it convenient. My development kit came with a 315 MHz key fob but SiLabs does not seem to sell them separately like they do for the other frequencies. In short, still looking for options.

    I got in the new Si4010 parts and now need to replace the programmed part on my fob with a blank one so I can try out my code.
     
  15. L@urens

    [email protected] Family, Racing, Karting, MTBing

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    Good stuff. I'd opt for a key fob that hangs with your keys or charge plug. This will probably see wider adoption as you're not solely providing a solution for OpenEVSE users.
     
  16. lolachampcar

    lolachampcar Well-Known Member

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    I know. I just do not want to deal with sourcing the buttons, button overlay, plastics and the like as those things can be a real pain. Hopefully I can find a Si4010 based fob in the 315 MHz range and just swap the 4010.
     
  17. q2222

    q2222 New Member

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    Hello,
    I am following the Forum for more than four years now and I thought it is time to place my first post... I have designed a key fob last Sunday based on the fact that my third prototype died (humid weather conditions in Switzerland). I do actually not know if my design works as planned- we will see. The design is based on a PIC12LF1840T39A.

    Printscreen.png
     
  18. lolachampcar

    lolachampcar Well-Known Member

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  19. zax123

    zax123 CDN Model S P308

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  20. MindBender

    MindBender Bite my shiny metal ass

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    Can anybody please confirm (or deny) that this is the proper radio unit:
    http://nl.farnell.com/aurel/tx-mid-3v/rf-mod-tx-am-ook-3v-433-92mhz/dp/1699470
    to use with the existing project (https://github.com/mstegen/Open-Chargeport)? The part number most closely matching the part number mention (http://nl.farnell.com/aurel/tx-saw433s-z-rfm/rf-module-tx-ook-434mhz-ext-ant/dp/1699491) seems to have a different footprint.

    Would a 5v version (http://nl.farnell.com/aurel/tx-mid-5v/rf-mod-tx-am-ook-5v-433-92mhz/dp/1699471) work as well? The PIC12F1822 doesn't seem to have a problem with 5v.
    I'm intending to built it into my charging equipment, which already has 5v available.
     

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