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 on: March 14, 2017, 02:26:18 PM 
Started by jeffrey.miller - Last post by jeffrey.miller

Exxon had thoughts on climate long ago also, and now the legal system is trying to go after them for subverting that message.  Curious stuff.

 on: March 14, 2017, 09:25:42 AM 
Started by jeffrey.miller - Last post by jeffrey.miller
The electrician has me on his calendar for April 8th for the service upgrade. 

 on: March 07, 2017, 11:31:08 AM 
Started by jeffrey.miller - Last post by ted.lowe
Haha Jeff... you remember my musings about "The Fast Lane" idea i had about 20 years ago.  Like those little toy race track cars we played with as kids.  High-power Inductive charging or a future IEEE-certified conductive adapter that allows us to slide along indefinitely on an electric-powered interstate.  Add self-driving technologies and wind-turbines all along the highway, long trips could be relaxing, efficient and cleaner.  BIG OIL will have far less control over our lives.  Now i feel like quoting John Lennon... "I may be a dreamer, but i'm not the only one."  Smiley

 on: March 05, 2017, 07:41:29 PM 
Started by jeffrey.miller - Last post by jeffrey.miller

And those thoughts were "burning oil is bad!", the funny part is that I am not kidding.  Also includes a classic video to show your climate change denying friends. 

 on: March 05, 2017, 07:37:09 PM 
Started by jeffrey.miller - Last post by jeffrey.miller

180kw delivery while driving up to 96mph.  Drool all you want, we won't see this here for a while yet. 

 on: March 05, 2017, 07:34:20 PM 
Started by jeffrey.miller - Last post by jeffrey.miller
Another Lithium metal battery however this one has some people behind it that likely know what they are doing.  Also using glass as the electrolyte, claims 3x Lithium Ion tech.  Also works well in lower temperatures.  I would give this tech better than average odds of making it in to our hands.

 on: March 03, 2017, 12:43:29 PM 
Started by jeffrey.miller - Last post by jeffrey.miller
A couple of threads on the Telsa motors forum indicate that warranty is almost certainly void, there may be an exception if the repair work was down by a Tesla certified shop though.  Also of interest there was some discussion around getting it inspected by a Tesla certified body shop to make it possible to buy an Extended Service Agreement. 

Other topics, supercharging has been functional for other people.  Phone app still working for other people.  These things make sense as it is hard to know what decision an insurance company may make and then turn then in to a car configuration.  In theory they could track that all down, but it could be legal hot water.  It sounds like early one this was happening but now it isn't, take it and super charge it before you buy it sounds like good advice.

Ebay auction for surprisingly similar car was in the 30's also last year. 

Interestingly this guy has a rebuilt title and got warranty work done, maybe "what they don't know won't hurt them" type of deal??? 

Obviously I am still thinking about this, if not for this one but for the next one that comes along.  I wonder which drive unit is in this car??  If I can determine that in the dealer lot and it is one of the known good revisions, this becomes more interesting.

 on: March 03, 2017, 08:04:52 AM 
Started by rich.carroll - Last post by rich.carroll
Yes, I thought $12.95 for two adapters, two power cords, and software was a really, really good price.  And Free Delivery, no less.

 on: March 03, 2017, 07:34:49 AM 
Started by rich.carroll - Last post by simon.gibson
I am very familiar with the gridconnect products - I use boat loads of them as a controls engineer!

 on: March 02, 2017, 06:12:31 PM 
Started by rich.carroll - Last post by rich.carroll
Here is a couple of interesting manuals that will help you a lot in understanding Vehicle Bus Communications. I'll also discuss the possibility of using an Arduino interface, so get a cup/glass of your favorite beverage and settle in.

 First is the owners manual for a pair of GridConnect CAN RS232 adapters.  It details the use of CANbus in cars, and discusses the various speeds.  I purchased two NEW CAN RS232 uVCCM adapters off eBay.  https://goo.gl/6nShzN Two adapters, two power supplies and shipping for $12.95.  These are a couple of generations old, but are new in the box, never used. The current version is $122 each https://goo.gl/8HOmx9  Neither the ones I bought, nor the new ones come with cables, but (taking care about pinouts) cables can be had for about $25 https://goo.gl/r2cYpV These are premium quality connectors, distributed by GridConnect who has really good tech support and is here in Naperville.

There is a second way to connect, much cheaper, but with some significant limitations.  You can use an Arduino (a single use, single board computer, under $10 https://goo.gl/r2cYpV )  and a SparkFun shield  https://goo.gl/jDK5a9 .  BTW, the SparkFUN OBDII info page has a really succinct description of the various CANbus protocols.https://goo.gl/xK8crB

Now both of these solutions hook a computer (in one case a laptop, in another case an Arduino or Pi) to a DB-9 port.  What you have in your car, under the dash is an OBD-II connector, also called a Data Link Connector (DLC).  You just need an OBD-II to DB-9 cable.  What no one tells you clearly is that while the pin configuration of the OBD-II connector is well known, there are at least two common ways to configure the pins on the DB-9.  To get CANbus signals all you need is a CAN-H, a CAN-L (high and low) signal and a ground.  There is a standard for putting CANbus signals on a DB-9, called CiA, and the Grid Connect uses pin 7 and pin 2 of the DB-9 for CAN-H and CAN-L.   But all the arduino shields and raspberry pi shields use a different scheme, where pin 3 and pin 5 are CAN-H and CAN-L.  So you have to be careful to purchase the OBD-II to DB-9 cable that goes with your particular communication pinout.  And no one tells you this.  Fortunately, each of these two systems have some advantages.  The true CAN-RS232 adapters (Grid Connect and others) are designed to capture mounds and mounds of data off the CANbus, and you have to filter out the stuff you don't want.  This is MUCH easier in Linux than in Windows, but certainly possible in either.  The Arduino shields are not anywhere near as fast, but can capture what you want.  Both can issue commands to the BUS, but much of the Arduino software is written so as to do very little in writing.  Make the temp gauge move, or the speedometer, or clear trouble codes, but if you want much more than that, you will have to learn CANbus and write things yourself.  The software you can use on a Linux laptop is much beyond the Arduino and allows you to do most of what you want. 

So we have two systems to approach the CANbus, one more powerful and more expensive, and one capable of capturing data at a relatively inexpensive cost. 

I started by saying the manual from GridConnect for the adapters that I bought is a great tutorial.  Nicely written, and very practical.  I can give you a copy of that (pdf) if you would like.   The second great resource, and also a great read is "The Car Hacker's Handbook." https://goo.gl/YctY8D You can download the book, and you will find it a well written resource.  You will also want to follow the author's YouTube videos, starting with, https://goo.gl/UNlCXg  I'll bet you will want to watch a number of his videos, as he makes it seem easy.

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