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Recent content by Banahogg

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    Model S REST API

    It sounds like managed_charging is for utility demand response or fleet management, which could be pretty interesting (there are already fields for scheduled charging in charge_state - scheduled_charging*) Have you had a chance to try related command names to see what might set the charge current?
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    Plan: Off grid solar with a Model S battery pack at the heart

    Yeah, that was the Wolfram Alpha link I posted. For an interesting amount of storage, you really need something that's basically two extra-deep olympic size pools and at least tens of feet height (ideally more). Given that you're just throwing away the energy right now, even something low...
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    Plan: Off grid solar with a Model S battery pack at the heart

    That looked like a pretty nice hill in the back of one of your pictures - time for some home pumped hydro (and/or home scuba pool)? ;-) http://www.wolframalpha.com/input/?i=%28150+ft+*+50+ft+*+50+ft%29+*+%28water+density%29+*+9.86+m%2Fs^2+*+50+ft+in+kWh
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    In-development: Inexpensive Custom BMS for Tesla Battery Modules

    You should definitely get a macrofab.net quote if you were considering professional assembly. Assuming they've fixed some of the issues I ran into (I was a pretty early beta tester), it should only be 15 minutes or so to do enough to get a price. I definitely understand doing it by hand for the...
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    In-development: Inexpensive Custom BMS for Tesla Battery Modules

    For me, i've found the opposite - I can smear paste and skillet reflow the board quickly, so as long as I'm doing enough that I can accept the 10-20% yield fallout from my rather casual technique, SMD is easily faster. I do try to stick with larger SMD components, though - 0805 and QFP. There's...
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    Model S REST API

    I was just porting my library to the new authentication scheme and I noticed backseat_token and backseat_token_updated_at in the vehicle query result that I hadn't seen discussed before. Presumably those are for the back seat control app that was promised with the executive rear seats.
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    Wireless alert for mail box

    Shame there's no cell access there... For low bandwidth, low power, and long range, I've heard good things about LoRa, but haven't tried it myself: Extreme Range Links: LoRa 868 / 915MHz SX1272 Module for Arduino, Raspberry Pi and Intel Galileo
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    Wireless alert for mail box

    It's not out until the end of the year, but something like the Particle Electron could be nice for this kind of application: The Electron: Cellular dev kit with a global data plan by Spark IO Kickstarter From my experience with hobbyist-grade RF modules, 1 mile at ground level could be tough...
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    Supercharger - Mountain View, CA (12 V2 stalls)

    Most of the stalls are blocked off right now for what looks like a re-striping.
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    SpaceX Factory tour

    Everyone that I know that's gotten a tour has arranged it through someone they know that's an employee at SpaceX.
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    PowerWall technical discussion

    In the SolarEdge press release, they say that "The solution will also support upgrading existing SolarEdge systems with the storage solution.", which makes it seem like there's no new hardware needed on the inverter. Since the communication needs to happen even if the grid is down (backup...
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    PowerWall and "The Missing Piece..." Event

    Elon tweeted $250/kWh: Elon Musk on Twitter:
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    PowerWall and "The Missing Piece..." Event

    I think you're off by an order of magnitude 10 kWh / 1000 kWh per month is about 7 hours. From looking at my PG&E smart meter data, I seem to average 600-700kWh per month, but looking at the days that I don't charge and don't have significant HVAC loads, it looks like about 10-15kWh, which...
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    Superchargers in Northern California (location speculation)

    I've heard that the new Santa Clara service center is going to be big. If we assume the dot is somewhat imprecise, maybe they'll co-locate some superchargers there like they did with the Salt Lake City location?
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    OMG: digitaltim’s delivery story…

    My 60 kWh went in for the contactor replacement with a 90% charge around 176 miles and came out with a 90% charge around 183 miles, which is about the same percentage change you describe.