GlennD
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Leaf Number: 410357
Location: Anaheim

Re: OpenEVSE - Open Source Charging Station

Tue Apr 19, 2016 10:06 am

Well, I have tried the cyan filter for several weeks. It is definitely brighter. I just put back in the blue filter. It is not as bright but bright enough and it looks so cool. I favor the less bright blue filter. Any filter is better than none.

I purchased a 2X20 display from eBay that came with a blue filter bonded to the glass. It works fine as a 2X16 display with 4 digits on the end not functioning. An escutcheon will fix that and only show the active digits. It was only $20.
2012 Cayenne Red SL traded for:
2013 Pearl White SL Premium
Traded for a Cirrus White 2014 Mercedes B (totaled)
2016 Urano Gray eGolf SEL w/ drive assist
Loved the VW but it sat too low for my old body
Back to a Cirrus White 2017 B250E

BudT
Posts: 8
Joined: Tue May 10, 2016 12:51 pm
Delivery Date: 09 May 2016
Leaf Number: 310204
Location: Louisville, CO
Contact: Twitter

Re: OpenEVSE - Open Source Charging Station

Thu May 12, 2016 3:46 pm

I'm a new Leaf (2016 SV) owner, lurking and learning here. I'm also a geek and data nerd. I like to build electronics projects (ham radio stuff, arduino and r pi stuff, etc). So naturally I'm drawn to OpenEVSE.

Since my Leaf has an onboard 6.6 kW charger, the max charge current at 240VAC is going to be 27.5A, therefore I have no need for a 50A EVSE. Am I missing anything here? Accordingly, I'll plan on building a 30A kit. I have no need for portability, so I'll *probably* be hard wiring this in my garage.
2016 Leaf SV
4.9 kW PV @home
Bikes
Running shoes

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Marktm
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Posts: 359
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737

Re: OpenEVSE - Open Source Charging Station

Thu May 12, 2016 6:35 pm

It's an easy build. I plan on using the included RAPI interface to set the amperes via an arduino to "opportunity" charge with my off-grid solar PV array. Very flexible design.
2012 Leaf SL; 36,000 miles. Battery replaced November 1st, 2016.
Rural cabin with 6750 watts Grid tied PV. Off-grid solar Leaf charging capable (level II).

GlennD
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Joined: Sun Dec 18, 2011 7:14 pm
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Re: OpenEVSE - Open Source Charging Station

Thu May 12, 2016 9:23 pm

The 30A kit is limited to 24A ( 80% of 30A) That is fine for a Leaf but you are limited to slightly less than 3A. 24A vs 27.5A. The Leaf follows the J1772 specifications so the slightly longer charging time is usually OK.
2012 Cayenne Red SL traded for:
2013 Pearl White SL Premium
Traded for a Cirrus White 2014 Mercedes B (totaled)
2016 Urano Gray eGolf SEL w/ drive assist
Loved the VW but it sat too low for my old body
Back to a Cirrus White 2017 B250E

BudT
Posts: 8
Joined: Tue May 10, 2016 12:51 pm
Delivery Date: 09 May 2016
Leaf Number: 310204
Location: Louisville, CO
Contact: Twitter

Re: OpenEVSE - Open Source Charging Station

Fri May 13, 2016 4:37 am

GlennD wrote:The 30A kit is limited to 24A ( 80% of 30A) That is fine for a Leaf but you are limited to slightly less than 3A. 24A vs 27.5A. The Leaf follows the J1772 specifications so the slightly longer charging time is usually OK.


So perhaps I should build the 50A kit for nominally the same cost and gain that extra 3.5A?

I was also thinking about interfacing with an arduino hat would activate charging when my home PV system production reached some threshold value.
2016 Leaf SV
4.9 kW PV @home
Bikes
Running shoes

GlennD
Forum Supporter
Posts: 1194
Joined: Sun Dec 18, 2011 7:14 pm
Delivery Date: 20 Jul 2013
Leaf Number: 410357
Location: Anaheim

Re: OpenEVSE - Open Source Charging Station

Fri May 13, 2016 8:53 am

I just build basic menu controlled EVSE's but some have used Lincomatic's RAPI to do some amazing things. Chris Howell has even interfaced a wi-fi unit to it. Controlling your EVSE with solar power should be possible for someone with programming skills.

Just remember that the NEC considers an EVSE to be a continuous load and you have to derate to 80%. Thus a 50A EVSE is good for 40A etc
2012 Cayenne Red SL traded for:
2013 Pearl White SL Premium
Traded for a Cirrus White 2014 Mercedes B (totaled)
2016 Urano Gray eGolf SEL w/ drive assist
Loved the VW but it sat too low for my old body
Back to a Cirrus White 2017 B250E

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Marktm
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Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737

Re: OpenEVSE - Open Source Charging Station

Sat May 14, 2016 5:51 am

BudT wrote:So perhaps I should build the 50A kit for nominally the same cost and gain that extra 3.5A?

I was also thinking about interfacing with an arduino hat would activate charging when my home PV system production reached some threshold value.


I'm in the final stages of arduino based control using RAPI interface to control the amp setting on the OE. Having no prior experience in IDE programming and arduino hardware, it's been a "learning" experience. You can PM me if you would like to know more.
2012 Leaf SL; 36,000 miles. Battery replaced November 1st, 2016.
Rural cabin with 6750 watts Grid tied PV. Off-grid solar Leaf charging capable (level II).

stopeject
Posts: 8
Joined: Wed Sep 03, 2014 1:24 pm
Location: US

Re: OpenEVSE - Open Source Charging Station

Fri Jul 08, 2016 7:16 am

Hello,
I read what I could find on OpenEVSE. The plans for an Android app and web interface were discussed a while ago, however I didn't see anything on the current development status. Is OpenEVSE still under active development?
BMW: 2015 i3, 2007 R1200GS

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Marktm
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Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
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Re: OpenEVSE - Open Source Charging Station

Fri Jul 08, 2016 7:42 am

stopeject wrote:Hello,
I read what I could find on OpenEVSE. The plans for an Android app and web interface were discussed a while ago, however I didn't see anything on the current development status. Is OpenEVSE still under active development?


If you post specific requests on the OpenEVSE forum, Chris Howell will get back with you - very helpful developer.
2012 Leaf SL; 36,000 miles. Battery replaced November 1st, 2016.
Rural cabin with 6750 watts Grid tied PV. Off-grid solar Leaf charging capable (level II).

stopeject
Posts: 8
Joined: Wed Sep 03, 2014 1:24 pm
Location: US

Re: OpenEVSE - Open Source Charging Station

Fri Jul 08, 2016 8:34 am

Thanks. I found a link to this thread in on of the OpenEVSE documents, and since I already had an account I decide to post here.
http://www.fveaa.org/fb/J1772_386.pdf
BMW: 2015 i3, 2007 R1200GS

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