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  1. B

    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.
  7. B

    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...
  9. B

    Supercharger - Mountain View, CA (12 V2 stalls)

    Most of the stalls are blocked off right now for what looks like a re-striping.
  10. B

    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.
  11. B

    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...
  12. B

    PowerWall and "The Missing Piece..." Event

    Elon tweeted $250/kWh: Elon Musk on Twitter:
  13. B

    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...
  14. B

    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?
  15. B

    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.
  16. B

    First service appointment 1 month and 2 days from today???

    I've had 4 service appointments (counting one scheduled for this week). It's been between 3 and 5 weeks wait, including both appointments where I had a failed door handle. I've put "long wait for appointment" as my feedback after each appointment so far and the response has always been that...
  17. B

    Reviews of Supercharger Sites

    Now we just need to convince BlueShift to make this kind of review part of supercharge.info so that we can find and share them more easily :-)
  18. B

    Door Handle Replacement

    The first revision of handles were prone to failing like that, though I would have thought you'd have the second revision with a P85+. Apparently, after two fail, the service center just preemptively replaces all of them - after my second rear handle failed a year after the first one, the...
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    Supercharger - Petaluma, CA (EXPANDED Jun 2018, now 20 V2 stalls)

    From memory, so the actual numbers may be wrong, and can't quite read the numbers from bugeater's pictures. Top is towards the street: 3A 1A 1B 2A 2B 4A 4B 5A 5B 3B The dealer-plate P85D was in 1A so, seeing the 4B/5A alignment, pulled into 1B thinking it'd be on a separate pair - I couldn't...
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    Supercharger - Petaluma, CA (EXPANDED Jun 2018, now 20 V2 stalls)

    I was there early afternoon yesterday probably close to the same time and there were two other cars (one of which was a P85D with dealer plates). I actually got bitten by the odd pairing of the stalls and had to move for full charge rate. The back row and front row pairs are offset by one...
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    Tesla Gigafactory Investor Thread

    From the email name in the screenshot, I'm assuming it's https://www.linkedin.com/pub/kevin-kassekert/5/49b/473 - internal screenshot for the report that was over-included in the report.
  22. B

    Supercharger - Petaluma, CA (EXPANDED Jun 2018, now 20 V2 stalls)

    My experience is that if you tap the T it can trigger an update (I did it on the way home from work today to reload with Petaluma). IIRC, Tesla used to give that as the official workaround to get the slacker credentials back - clear the fields and tap the T to "phone home".
  23. B

    Can retracting door handles hurt a kid's hands?

    An old thread with a live test: Tesla Door Handles - Child Safety Test !!
  24. B

    Model S REST API

    From some experimentation, I wonder if Tesla isn't blocking third-party apps, but is just more aggressively rate-limiting the requests. I reset my logger to only update every 10 minutes and it's been running fine for over 24 hours (3 503 responses, but that's pretty normal). This is with the old...
  25. B

    Supercharger - Manteca, CA (LIVE 12 Feb 2015, expanded 12 Dec 2017, 20 V2 stalls)

    Just google the title of the article to get around the paywall. Sounds like the water district serving Manteca wants to become a power company, taking over the PG&E infrastructure in the area.
  26. B

    What happens when Model S sits, unplugged, in cold, for long periods of time?

    The warranty text in question is "• Exposing the vehicle to ambient temperatures above 140°F (60°C) or below -22°F (-30°C) for more than 24 hours at a time;" Based purely on that text, we don't care how cold it gets for a brief period of time, but the lowest temperature that will be sustained...
  27. B

    What happens when Model S sits, unplugged, in cold, for long periods of time?

    From Threaded Extremes, the lowest daily maximum temperature ever recorded in MSP is -20F on 1/15/1888, which pretty much guarantees there isn't a 24 hour period on record where it was below -22F the entire time (depends on exactly how they define the daily maximum). International Falls is a...
  28. B

    Pics/Info: Inside the battery pack

    For AC charging, the REST API reports the battery current as well as the charger power. If we assume the battery current is measured rather than computed internally and ignoring losses (a less reasonable assumption), then we can get the pack voltage as (charger_voltage * charger_actual_current)...
  29. B

    Lifetime Average Wh/mi

    318 Wh/mi at 10500 miles
  30. B

    EV Credit, TurboTax, & the IRS

    EV Credit, TurboTax, the IRS
  31. B

    Get J1772 adapter to pop charge port door

    Yeah, that's definitely not Manchester in that plot, though I can't quite figure out how I could have seen something so clearly Manchester while you're seeing straightforward OOK. Unfortunately, I don't think I'll be able to double-check this any time soon...
  32. B

    Get J1772 adapter to pop charge port door

    I was seeing ~315 MHz for US cars. The FCC document for the key (https://apps.fcc.gov/eas/GetApplicationAttachment.html?id=1725086) lists 315.026 Mhz 433 MHz is only available for ISM use in Region 1 according to wikipedia ISM band - Wikipedia, the free encyclopedia. I believe it's in a ham...
  33. B

    Get J1772 adapter to pop charge port door

    That's a very familiar looking plot - you can see the sync pulses at the beginning and I think I see one of the repeats of the manchester-encoded data. This is what I tried just sending back out to a basic transmitter, but was never quite able to get to work (the resulting RF looked "dirty" on...
  34. B

    Model S REST API

    I have a simple Ruby library that I could clean up for release if there's any interest.
  35. B

    Model S Technical / Mechanical Issues

    I have seen that as well. For me, it started exactly when I got 4.4
  36. B

    SAE vs CHAdeMO

    I've logged <10kw from a supercharger when filling to a full range charge (last 5% are dog-slow)
  37. B

    60 or 85--I Need Help in Deciding!!!

    Another happy 60 owner here. Have done 2 supercharger road trips and loved it. I'd recommend getting supercharger support - it's such a pleasant road trip car that you may use it more than you initially think, especially with the SCs coming online in Texas as we speak. The range and longer...
  38. B

    Supercharger - Fremont, CA - Tesla Factory (LIVE, 4 V2 + 8 V3 stalls)

    I saw the same thing when I was there on Sunday (don't think we overlapped - I don't remember a red), so I'm pretty sure it's the standard 4-bay layout. - - - Updated - - - The password is printed on a sheet of paper inside the delivery center across from the superchargers along with a few...
  39. B

    Anyone interested in selling their 3rd row seats?

    I thought that's what we'd decided in the other thread was the VIN cutoff around 6000 or so? Someone was told that it would be $6K to add the reinforcement for cars after the cutoff.
  40. B

    Supercharger - Fremont, CA - Tesla Factory (LIVE, 4 V2 + 8 V3 stalls)

    Mine wasn't fully charged when I picked it up in February - there were a few days of vampire load missing from it. They did ask me before pickup if I needed a full charge before pickup, which I didn't (~15 miles away)
  41. B

    Censored Music Search

    I signed up for a separate account primarily so that I could flip that switch easily. I wrote about my experiences with the voice censor here: Voice/speech recognition sensitivity and accuracy - Page 3
  42. B

    Model S Technical / Mechanical Issues

    Which service center had the loaner for you? I got a Nissan Altima from Menlo Park earlier in the week, which was less interesting to compare and contrast with the Model S :-) To keep this post topical, I was in for a failed door handle and a few minor cosmetic issues (half of which they got to).
  43. B

    Supercharger - Fremont, CA - Tesla Factory (LIVE, 4 V2 + 8 V3 stalls)

    Fremont | Tesla Motors That answers some of the questions. I think that's the shortest amenity list of any supercharger...
  44. B

    Connectivity: What do delivered Production cars have for Wifi and 3G connectivity?

    I believe the Audi plan allows the car to act as a WiFi hotspot as well, which the Model S doesn't have right now (the 5.0 WiFi sounds like it goes the other direction). I'm not sure how useful that is, but it'd need to be accounted for in the costs. - - - Updated - - - The original press...
  45. B

    Supercharger - Fremont, CA - Tesla Factory (LIVE, 4 V2 + 8 V3 stalls)

    I got an invite this morning to visit the new Burlingame service center, which is further from me than Fremont. I guess highedu is just the only one here on that particular cool-kids list ;-)
  46. B

    Superchargers to be limited in future? coming to McDonalds?

    They're already doing basically this. The superchargers are in pairs and the stacks split the max charge current between them depending on the state of the taper and who plugged in first. In some of their patents, they describe using additional factors for prioritization as well as more flexible...
  47. B

    Superchargers to be limited in future? coming to McDonalds?

    Half the car's range seems like way too much given that the superchargers are spaced at 3/4 of a 60kWh range. Even 50 miles would have left me on the J1772 at Gilroy looking forlornly at the superchargers I paid to access coming back from Harris Ranch (there was a headwind). Having frequent...
  48. B

    Told sudden permanent 15 mile loss of range is "normal"

    I can see a difference from even light A/C on my city streets commute as long as I'm driving reasonably (too sleepy to drive aggressively on the morning commute). If I have the climate control off and the windows open, I've seen as low at 250 Wh/mi on a 5 mi commute.
  49. B

    Supercharger - Fremont, CA - Tesla Factory (LIVE, 4 V2 + 8 V3 stalls)

    Yeah, no love for me either, though at this point my car will still be in the shop on Friday :frown:
  50. B

    Supercharger - Fremont, CA - Tesla Factory (LIVE, 4 V2 + 8 V3 stalls)

    Now that I think about it, that's the same corner as the test track property they just bought... It'll be interesting to see where on the property the official supercharger is.

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