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Get J1772 adapter to pop charge port door

Discussion in 'Model S: Battery & Charging' started by zax123, Feb 21, 2013.

  1. zax123

    zax123 CDN Model S P308

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    I did some searching and browsing in the forums and I don't see that anyone's asked this already...

    I know that the Tesla UMC and the HPWC connectors can pop open the charge port door with the press of the button. I was wondering why Tesla didn't put a similar button on the J1772 adapter, and since they didn't, is there a way to figure out how to get one on there?

    I'm not sure how it's talking to the car -- does anyone know? Is it simply a magnetic pulse or something like that?

    I'm going to have a HPWC in the garage, but a J1772 at work, so I'd love to be able to figure out a way to put a button on the adapter...

    Any brave soul taken apart the UMC yet? :)
     
  2. Banahogg

    Banahogg Member

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    It's 315MHz - 10 pulses of 165ms on and 35ms off as determined from a little poking around with my RTLSDR. I realized after I found that that I don't have the right transmitter module on hand (have 433 MHz), but it should arrive after I get back from Tahoe next week and hopefully I can try it then.
     
  3. markb1

    markb1 Active Member

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    I presume the answer to why is that adapter doesn't have any power source until it the EVSE switches on, which doesn't happen until it's plugged into the car.
     
  4. Morristhecat

    Morristhecat Member

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    Can a button be added to the app for opening the charge door? While not as convenient as the mod you suggest, it may be an easier implementation. If you have your phone on you, at least you wouldn't have to go back into the car to open it.
     
  5. mknox

    mknox Well-Known Member

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    Or even something on the key fob. A triple click maybe or hold down two of the buttons?
     
  6. kvietor

    kvietor Model S S280 VIN 168

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    That already exits. Look on the charge page in the upper right corner.
     
  7. Robert.Boston

    Robert.Boston Model S VIN P01536

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    It would be nice to have the J1772 adaptor, once plugged into a J1772 cable, issue this same pulse on command.
     
  8. zax123

    zax123 CDN Model S P308

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    Wow, I'm impressed that you were able to find this. I'm assuming a PAL + some radio circuitry could be programmed to do this, but as markb pointed out, it would take power. But doesn't the control pin have +12V at all times? I know this is likely a big project, but I think an adapter with a button would likely be quite popular.

    I'm happy to know the app has a button to pop the door though! I get my car next week, so I'm not able to verify that at the moment...
     
  9. jomo25

    jomo25 P4398

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    Are you talking about the smartphone app? I assume so (dont have a car yet), but the screenshot on iTunes for the app shows "Stop charging" in that space. maybe because the screenshot was taken while the car was charging. Does it say "open charge port" when it isn't charging?

    Or are you talking about the in-car dash app?
     
  10. ElSupreme

    ElSupreme Model S 03182

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    The phone app has three buttons. If you are not plugged in it has a 'open charge port' button. If you are plugged in it has 'start charging' or 'stop charging' based on the current status of charging.

    Only one is shown at any given time.
     
  11. Doug_G

    Doug_G Lead Moderator

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    I seem to recall that the App can also show an "unlock charge port" button.
     
  12. jomo25

    jomo25 P4398

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    Cool. Thanks for the clarification!
     
  13. Zextraterrestrial

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    I thought my charge port opened when I was using a chargepoint charger yesterday for fun. (and to put notes on the 2 cars that were parked in the EV spots!)
    but I may have pushed the button on my dash before I got out. hmm
     
  14. radinator

    radinator Member

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    I would like the mobile app to have an "Unlock charge port" button, so when I'm done charging I don't have to go into the car to unlock it and be able to take it out of the charge port. Or maybe I am missing something, because this is annoying when I am using a ChargePoint station and I want to be able to pull the cord after I wave my card in front of the station reader.
     
  15. gregincal

    gregincal Active Member

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    I used the "unlock charge port" button from the mobile app just yesterday when using a ChargePoint station.

    When you stop the charging on the station, then "stop charging" on the phone turns into "unlock charge port".
     
  16. tezco

    tezco Sig P85

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    No app needed. When I disconnect my J1772 from the S adapter, the charge port unlocks for a few seconds, and I can pull out the S adapter. (This also works when the car is locked and the fob nowhere to be seen.) After a few seconds the locking pin pops back up again, so you can't reinsert the adapter if you happen to have pulled it out accidently.
     
  17. Banahogg

    Banahogg Member

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    Looks like there's some modulation on the "on" pulses that I was filtering out before with too aggressive of a low pass filter (whoops). Hopefully that won't take too much more time to figure out
     
  18. zax123

    zax123 CDN Model S P308

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    I've got to ask (I'm an engineer)... once you do find the pulse pattern, what do you plan to do? :)
     
  19. andrewket

    andrewket 2014 S P85DL, 2016 X P90DL (soon 100)

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    Signal the alien spacecraft currently orbiting Mars that we have the code to disable the defense grid.
     
  20. Zextraterrestrial

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    It's about time. We've been watching the pulse patterns for ages
     

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