Update index.md (#1099)

* Update index.md

* Update example_chart.yml

* [pre-commit.ci lite] apply automatic fixes

* Update index.md

---------

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docs/index.md

@@ -23,4 +23,59 @@ Some inverters have their own groups also e.g:
 If you want to buy me a beer then please use Paypal - [[email protected]](mailto:[email protected])
 ![image](https://github.com/springfall2008/batpred/assets/48591903/b3a533ef-0862-4e0b-b272-30e254f58467)
 
-![image](https://github.com/springfall2008/batpred/assets/48591903/ac4eb3ee-f00e-4014-9d1e-34e3358c37ed)
+## Taster
+
+Once you are up and running you will get a chart that predicts your battery levels over time:
+
+![image](https://github.com/springfall2008/batpred/assets/48591903/01ad36d0-bd2f-4552-96ff-395a4183225d)
+
+And you can also see this in a plan format predicting your overall costs and your carbon footprint (if enabled, UK only for now):
+
+![image](https://github.com/springfall2008/batpred/assets/48591903/bac71e9d-6314-4487-a42a-2578acb4217a)
+
+![image](https://github.com/springfall2008/batpred/assets/48591903/f3669da2-c2a4-40f0-b611-16b08bd20a2e)
+
+You can see a cost over time for the plan that Predbat has made and also how it might turn out if your solar production (should you have solar)
+is lower than expected or if you use a bit more energy than planned (10% scenario):
+
+![image](https://github.com/springfall2008/batpred/assets/48591903/996ae721-dc93-4ed9-9897-be2bba495484)
+
+You can see your energy rates over time and where the battery is being charged:
+
+![image](https://github.com/springfall2008/batpred/assets/48591903/a09fb414-c2c1-4d2f-a264-9f38d156562a)
+
+Power charts can show you how the prediction maps to your inverter:
+
+![image](https://github.com/springfall2008/batpred/assets/48591903/a84c8de0-4f6a-48a6-81c8-09b0f7828563)
+
+You can model iBoost or similar solar diverters, this will be shown on your plan and you can even use it to trigger smart devices e.g.
+an emersion heater based on energy rates.
+
+![image](https://github.com/springfall2008/batpred/assets/48591903/758d380c-4cfa-4e92-b53a-167496bf888c)
+
+You can predict when your car will charge and use Predbat to schedule the cheapest car charging slots:
+
+![image](https://github.com/springfall2008/batpred/assets/48591903/47178a50-0e6f-45ea-9972-a34f97ed94a7)
+
+Charts can track your cost saving using Predbat and from having a PV and Battery system
+
+![image](https://github.com/springfall2008/batpred/assets/48591903/78333838-e2a7-4050-90a7-641f1caf70d2)
+
+The calibration chart is useful for tuning the model for things like inverter losses until it matches reality:
+
+![image](https://github.com/springfall2008/batpred/assets/48591903/625d0ec3-181d-440c-be06-2cd912e28b6e)
+
+Predbat can track your actual vs predicted energy usage and make real time adjustments to the predictions if you use more or less:
+
+![image](https://github.com/springfall2008/batpred/assets/48591903/1b3d7efd-b537-4c40-810d-c8770577ad98)
+
+You can tune lots of parameters to match your system and needs:
+
+![image](https://github.com/springfall2008/batpred/assets/48591903/35e20052-ddc3-4815-8f88-32b327ee3fc6)
+![image](https://github.com/springfall2008/batpred/assets/48591903/f6b6930a-afd7-4f79-aa9b-477a6f9f0794)
+
+You can also override the plan on a temporary basis if you have a particular reason to:
+
+![image](https://github.com/springfall2008/batpred/assets/48591903/c4b5fb58-d565-4569-9cfc-e91316ecc8b2)
+
+Please read the documentation for more information!

templates/example_chart.yml

@@ -664,8 +664,10 @@ header:
   title: Cost Savings
   show_states: true
   colorize_states: true
+graph_span: 7days
 span:
   start: day
+  offset: '-7day'
 now:
   show: true
 series:
@@ -674,19 +676,19 @@ series:
     name: saving_predbat
     type: column
     group_by:
-      func: min
-      duration: 1day
+      func: last
+      duration: 24hours
   - entity: predbat.savings_yesterday_pvbat
     stroke_width: 1
     name: saving_pvbat
     type: column
     group_by:
-      func: min
+      func: last
       duration: 1day
   - entity: predbat.cost_yesterday
     stroke_width: 1
     type: column
     name: actual
     group_by:
-      func: min
+      func: last
       duration: 1day