Comments on: Granny charging

By: J.R.

J.R. — Thu, 26 Oct 2017 07:50:34 +0000

Yes, i’ve built the AnalogEVSE , an it works great with my ZOE ,in a Wallbox.
although Cranny Charger is working absolut properly at my “Emergency-Charging-Cable”
greet
J.R.

By: cose385

cose385 — Sun, 08 Oct 2017 15:58:03 +0000

In reply to Jeroen Meijer.

I’m also SW guy but the OpenEVSE is complicating some things which are nice to have for home charging station (which I can’t do since I live in apartment).

For portable usage I don’t need display, Wifi/BT connectivity, charging meter and other bells and whistles – only simple basics which will in case of emergency enable quick charging in any garage or workshop with 3-phase 16A or 32A jack.

Bernhard (AnalogEVSE author) also mentioned that he was using OpenEVSE and experienced occasional freezes, and since his analog version has all of the basic functionality I’m considering to give it a try.

My friend looked over the design and said that it is very clear, using proven design and components – who could ask for more. 🙂

By: Jeroen Meijer

Jeroen Meijer — Sun, 08 Oct 2017 15:43:18 +0000

In reply to cose385. Great find. My goal was to make it fit into the plug, which was a challenge, and will be even a bigger challenge with this design. I am more of a software guy, so I tend to gravitate more to openEVSE and I don't understand his aversion to it. All the overkill he mentions can be disabled with changing a few #defines. But maybe there was also fun factor involved, which I really understand. This design falls short I think when it comes to integration with i.e. PV, which is what I am building right now. Still, nice :-)

By: cose385

cose385 — Sun, 08 Oct 2017 15:24:46 +0000

Did anyone try http://analogevse.xyz/?
It seems like a very clean and simple solution adequate for DIY charging station.

By: Lars Nilsson

Lars Nilsson — Sun, 08 Oct 2017 15:04:12 +0000

Nice, I will give it a try.

By: J.R.

J.R. — Sat, 07 Oct 2017 10:43:04 +0000

Maybe this helps a little bit:

Version with 11kB for Arduino Pro Mini
without LCD, Buttons and GFCI !

Caution: Only compile with Linux and Arduino Version 1.0.5 !!! No DFSG Version!
Extract all Files to own Folders in Sketch-Folder !
For fixed Amp-Value, enter Amp-Value figures in open_evse.h in Lines 154 to 164. (all the same)
For charging with 12A , enter Value “13” to open_evse.h
Hardware : Connect Resistor from PP to GND (680Ohms) !

Greets

By: Lars Nilsson

Lars Nilsson — Mon, 28 Aug 2017 18:20:35 +0000

In reply to Jeroen Meijer. It is indeed a 328. I will give the latest version a try. Thanks

By: Jeroen Meijer

Jeroen Meijer — Mon, 28 Aug 2017 18:06:25 +0000

In reply to Lars Nilsson. I would happily send you that very old code drop, but have a look first at the chip on the pro mini. If it is a 328 instead of a 168. Only very old Pro Mini's are 168 which are memory limited. If you have a 328, you better get more recent code from the openEVSE project.

By: Lars Nilsson

Lars Nilsson — Mon, 28 Aug 2017 17:47:15 +0000

Nice build and good to have a backup charging solution.
I have an arduino pro mini, a cable mounted gfci and it would make me very happy if you could send me the code for the evse.
I have same problem as Seti with disabling the lcd, gfci and buttons.

Thanks!

By: Jeroen Meijer

Jeroen Meijer — Mon, 02 Jan 2017 12:10:18 +0000

In reply to Bob Fisch. Nitpick: 8 amps (1.8 is a typo) and that is for a Q version. I think the R versions go lower, have seen them charging @ 1kW, but I can't swear on that. Maybe ask Crf, I am pretty sure he has an R240 and tried low power conditions.