Introduction

What it is and what it is not

Homey Easy Charge Controller is a Homey App than can control an another Homey App, based on Nordpool prices, your prefererences and input from other Homey Apps. It is intended to be wired with Homey Flows or Advanced Flows to get information from other sources and to control other Homey Apps and Devices.

When a Controller device is created you should initialize it with some setup. 

Suggested steps to start with

1. Install the app from App Store
2. Then add new Device, select Easy Charge Controller and the Controller device
3. Select Connect
4. You should get one Charge Controller device
5. Add it
6. You should see it like this 
   
   
   
7. the selections in the bottom
   
8. From left to right this is what you can do
   1. turn on/off the controller
   2. slider ot set current State of Charge (SoC) and target SoC
   3. you can set the amount of hours you want to charge and the ned time where the charing is supposed to be finished
   4. In section nr 4 from left alle values in the controller is displayed.
   5. Last is flows and state infomation
9. The settings page hase these settings
   1. The usable battery capacity of you car
   2. The nominal speed of you charger in Watts
   3. The price area from Nordpool
      

The Controller Panes

To turn on or off your charger controll process. It will still load prices, and retrieve status information, but it will not start or stop the carger even if the schedule is due.

The 2 sliders to manually controll current SoC or the target SoC

The 2 dropdowns to control the abmout of charge and when to get finished.

Here's the first thing you need to be aware of. If 'Use Charge End' time is selected, the controller will use Current SoC, Target SoC, Battery Capacity, Nominal Charge Speed, and the current time to decide when to select the hours it will enable charing on.

If you select i.e 3 hours, the Controller will select the 3 cheapest hours between now and the Charge End time to  enable charging. 

Note: If the car is not connected, the time of now will be used in the calculation, but if the Car is connected, then the hours will be recalulated from the time of car connecting and the Charge End time. This is quite obviously, as the cheapest hour may be passed, and if the Car was not connected at that time, it cannot be used, so the i.e 3 cheapest hours from the car connect time and Charge End time will be used.

The next pane is long, but nice. It shows all you need to know about what the Controller is planning to do. This is the main idea of the App. There's a lot of smart chargers out there, but no one are telling in advance the whole story about chat is plans to do. This App do.

So the first row is about the current SoC and target SoC.

The next is showing the charge speed ( you set this with the settings tab ) and the Charge End time

Next is the count of hours to charge. If 0, it means use end time and current SoC, and the result of the calulation is shown as 00:24 in this picture. The Controller anly use whole hours when controlling, so the Start Charge Command will happen at the start of the hour, and the End Charge Command will execute at next hour. In case of 00:24, it rounds up to next whole hour.

If you choose i.e 3 hours, the number will show here, and that amount will be selected. and the Calulated Charge Time ids just to help you set the amount, if that is your desire. Sometimes you maybe only want to charge just 2 hours, because that is what you want. Well, here you can do that.

Nest is the amount of ampere and watt you charger is delivering. It's just to inform you, it you have the need of knowing, which the whole idea of the App really is....

And at last there is one row for each hour, from 13.00 todauy to 12.00 tomorrow, which is the scope of this Charge Controller.. The left is Yes or - ( dash) and the rigth is the price for that hours. So you can see with your own eyes whats going on, and what will happen from now to tomorrow at 13.00 when new Nordpool prices are loaded.

This is a sample of one hours where a charge session is planned to happen

You can create as many devices you want for have different targets to control. You can even control charger at home and at your cabin, if you have both chargers available in Homey and they ar cloud ready, such as the Easee charge robot. 

Explanation about every setting

Heres some examples to visualize typical flows you may want to create.

To connect commands from the controller to the charger

To feed charger status into the Easy Charging Controller