OpenEVSE - Open Source Charging Station

[electronit]

I am glad OpenEVSE is part of your adventure.

It's great ! And surprisingly, I'm actually using it more to reduce the charging current (to 6A) than to charge faster - this in order to avoid overloading electricity installations in the Bed & Breakfast for example.

Feel free to branch the code, it probibly would be good to keep track of Euorpe specific features such as the 62196-2 proximity pilot and changes to the Advanced PS code for 230V.

I should - and will do this, but probably once we're back. So far I have indeed changed the code for the Advanced PS. I ended up using 2 voltage detector chips after all, and I now have a state "reversed polarity" when I get voltage on Neutral and not on Phase - so that I can plug in the other way round... (continental european plugs are reversible; it probably doesn't make any difference to the car, but might as well be corretct ). Need to put in place the #ifdefs so that the code remains compatible...

I'm going to play around more with the proximity pilot when we're in Scotland.

 

[TEG]

I wonder what is inside this? :

http://www.evtradinpost.com/item/504" onclick="window.open(this.href);return false;
http://www.ebay.com/itm/EVSE-J1772-Charging-Station-for-Electric-Vehicles-Leaf-Volt-and-Focus-/261072361686" onclick="window.open(this.href);return false;

 

[chris1howell]

I wonder what is inside this? :

Me too... The pictures show the ITT cable, which is good.
From the description it looks like it is missing GFCI.
I would love to see pictures of the inside...

"For maximum safety GFI Circuit Breakers should be used for the Charge Station supply"

Starting bid $790 Buy it Now $870 :shock: ...

 

[mitch672]

If any of you are fans of http://www.evtv.me" onclick="window.open(this.href);return false; there was an episode a few months back, the guy who made the EVSE above showed its internal PCB, and electronics. He doesn't use microprocessors, so the logic board was very big... He makes them, and decided to see if he could sell a few. He was on the webcast with Jack Rickard and Brian ("the Brain") Notto, he also had his son with him. If I can find the link to the specific webcast I will edit this post and include it.

 

[fotajoye]

Chris:
Is it within the rules for someone to use the open design and IP to take a product to sell? Not that I want to do it...just a question.
Ladson

 

[chris1howell]

Chris:
Is it within the rules for someone to use the open design and IP to take a product to sell? Not that I want to do it...just a question.
Ladson

Yes, anyone can use OpenEVSE in a commercial product in compliance with the Open Source license(s).
In short they have to acknowledge the product is based on OpenEVSE and the modified firmware schematics have to be freely available as they are now.



The content such as wikis, photos, guides and schematics fall under the Creative Commons Attribution Sharealike 3.0 license. http://creativecommons.org/licenses/by-sa/3.0/

Which means you can Share or Modify for sale as long as you:
Provide Attribution that the product was based on OpenEVSE AND
Release the resulting product under the same license (ie post the new schematics and source code)

*unless you get permission from the copyright holder.


The firmware source code is licensed under GNU GENERAL PUBLIC LICENSE v3. http://www.gnu.org/licenses/gpl.html

Which is similar to the content license. GNU calls it copy "left" which helps to ensure the resulting software remains freely available.

 

[palmermd]

If any of you are fans of http://www.evtv.me" onclick="window.open(this.href);return false; there was an episode a few months back, the guy who made the EVSE above showed its internal PCB, and electronics. He doesn't use microprocessors, so the logic board was very big... He makes them, and decided to see if he could sell a few. He was on the webcast with Jack Rickard and Brian ("the Brain") Notto, he also had his son with him. If I can find the link to the specific webcast I will edit this post and include it.

http://youtu.be/SrUp3rQce2M#t=50m30s" onclick="window.open(this.href);return false;

 

[lemketron]

If any of you are fans of http://www.evtv.me" onclick="window.open(this.href);return false; there was an episode a few months back, the guy who made the EVSE above showed its internal PCB, and electronics. He doesn't use microprocessors, so the logic board was very big... He makes them, and decided to see if he could sell a few. He was on the webcast with Jack Rickard and Brian ("the Brain") Notto, he also had his son with him. If I can find the link to the specific webcast I will edit this post and include it.

http://youtu.be/SrUp3rQce2M#t=50m30s" onclick="window.open(this.href);return false;

Hmmm. I found a different (older) DIY video on their site here:
Scroll down to "July 22, 2011 - Build Your Own J1772 Charge Station" at EVTV.me.
Note that it's a long video! The EVSE segments starts at 81:40.

 

[mitch672]

If any of you are fans of http://www.evtv.me" onclick="window.open(this.href);return false; there was an episode a few months back, the guy who made the EVSE above showed its internal PCB, and electronics. He doesn't use microprocessors, so the logic board was very big... He makes them, and decided to see if he could sell a few. He was on the webcast with Jack Rickard and Brian ("the Brain") Notto, he also had his son with him. If I can find the link to the specific webcast I will edit this post and include it.

http://youtu.be/SrUp3rQce2M#t=50m30s" onclick="window.open(this.href);return false;

Thanks. The video of the EVSE starts at 50:26 runs to 1:03:00 or so, for those of you who don't want to watch the entire episode

 

[fotajoye]

And, the last question, as it would be asked by my lawyer daughter:
What if they don't comply? Would Google get 'em? Or, is the Google license really to protect the designers and founders from libel?

 

[chris1howell]

Duplicate post...

 

[chris1howell]

And, the last question, as it would be asked by my lawyer daughter:
What if they don't comply? Would Google get 'em? Or, is the Google license really to protect the designers and founders from libel?

Google has nothing to do with either license. If someone used the IP contrary to the license they could be sued for copyright infringement. The best example I can think of is the linksys wrt54g which used linux as its core os. Cisco/linksys refused to release the source code. Cisco was dues by the free software foundation and eventuly settled by releasing the source code and making an undisclosed "donation" to the free software foundation. Here is a reference http://m.networkworld.com/news/2008...=http://en.m.wikipedia.org/wiki/FSF_vs._Cisco

When the source code was released the router became hugely popular with geeks so it probably worked out well for linksys.

 

[TEEEKOWED]

I started a Google Code Open Source project for the "Open EVSE" based on the DIY EVSE http://www.mynissanleaf.com/viewtopic.php?f=26&t=2736
I just started populating the site with info and a basic schematic. There is much more to come...

Take a look and contribute if you can.

http://code.google.com/p/open-evse/

HELLO CHRIS

MIGHT WANT TO GIVE ME A CALL >> 702-782-5064
MIGHT HAVE SOME VERY RECENT INFORMATION YOU MIGHT FIND USEFULL

THANKS TOM

 

[TEEEKOWED]

I started a Google Code Open Source project for the "Open EVSE" based on the DIY EVSE http://www.mynissanleaf.com/viewtopic.php?f=26&t=2736
I just started populating the site with info and a basic schematic. There is much more to come...

Take a look and contribute if you can.

http://code.google.com/p/open-evse/

HELLO CHRIS

MIGHT WANT TO GIVE ME A CALL >> 702-782-5064
MIGHT HAVE SOME VERY RECENT INFORMATION YOU MIGHT FIND USEFULL

THANKS TOM

OR E-MAIL [email protected]

 

[GlennD]

Chris earlier stated he did not like the Ardunio units like the UNO. He does not like the ceramic 16 Mhz resonator.

Through a communications mishap I ended up with 5 UNO rev 1 boards.

I decided to make up an EVSE shield on a proto board and see just what it is that Chris hates. I put a EVSE programmed chip into each and measured the 1 Khz pilot tone. On all 5 it measured 992Hz and it seemed stable under freeze mist and my heat gun.

The rev 1 boards have pads for a crystal and the 2 22pf chip caps. I removed the resonator and replaced it with a crystal. Upon retest the pilot is at 1 Khz like it should be.

I do not know the pilot tolerance but 8 Hz seems like a lot to me.

 

[DarkStar]

Chris earlier stated he did not like the Ardunio units like the UNO. He does not like the ceramic 16 Mhz resonator.

Through a communications mishap I ended up with 5 UNO rev 1 boards.

I decided to make up an EVSE shield on a proto board and see just what it is that Chris hates. I put a EVSE programmed chip into each and measured the 1 Khz pilot tone. On all 5 it measured 992Hz and it seemed stable under freeze mist and my heat gun.

The rev 1 boards have pads for a crystal and the 2 22pf chip caps. I removed the resonator and replaced it with a crystal. Upon retest the pilot is at 1 Khz like it should be.

I do not know the pilot tolerance but 8 Hz seems like a lot to me.

From the specifications, the nominal value is 1000 Hz, maximum value is 1020 Hz, and the minimum value is 980 Hz.

 

[chris1howell]

Chris earlier stated he did not like the Ardunio units like the UNO. He does not like the ceramic 16 Mhz resonator.

Through a communications mishap I ended up with 5 UNO rev 1 boards.

I decided to make up an EVSE shield on a proto board and see just what it is that Chris hates. I put a EVSE programmed chip into each and measured the 1 Khz pilot tone. On all 5 it measured 992Hz and it seemed stable under freeze mist and my heat gun.

The rev 1 boards have pads for a crystal and the 2 22pf chip caps. I removed the resonator and replaced it with a crystal. Upon retest the pilot is at 1 Khz like it should be.

I do not know the pilot tolerance but 8 Hz seems like a lot to me.

I would not say I hate resonators... There are a lot of Arduino clones out there, most would be fine but some may not.

 

[GlennD]

Thanks for the info. It would seem that 992 Hz is within spec but it is out of my comfort zone.

It seems interesting that the crystals that must have loose tolerances derive a perfect 1000 Hz while the resonators do not. They must have terrible tolerances!

 

[Nekota]

Thanks for the info. It would seem that 992 Hz is within spec but it is out of my comfort zone.

It seems interesting that the crystals that must have loose tolerances derive a perfect 1000 Hz while the resonators do not. They must have terrible tolerances!

Quartz has a 0.001% frequency tolerance, while PZT (ceramic resonator) has a 0.5% tolerance.

 

[jimbennett]

Anyone interested in getting some J1772 cables from China? I was quoted a price of $70.50 for a plug with a 10 foot cable, but shipping is $85. If I get four, the shipping is $128. This is from Dostar, mentioned previously in this thread. Anyone try this?