The charger manufacturers need to open up their API's a little, like Tesla does. That would enable enthusiasts to take control
Hmmm ... I'm still mentally struggling with why controlling the charger is better than controlling the car.
At the very least the Charger is going to have to be able to ask the Car for its VIN so as to know which family member car it is ... or a visitor ... and have a database of cars and their requirements
How much juice does the visitor need? What a palaver - Visitor just needs to set that for/from their car ...
Where is Car-#1 going tomorrow and how much juice does it need?
From charger's viewpoint that needs a conversation with Charger-#2 to see if it is plugged into any other car and what that car's requirements are.
I'm reckoning all that will be easier from the Car's APP
- set Car-#1 to "Must have 100% by 6AM"
- set Car-#2 to its default
Where "default" might be something like "Need minimum 50% by end off Off Peak, fill it up if excess Solar or Electricity generation is curtailed and Price goes negative
"
Perhaps other cars are less flexible than ours so controlling via the charger is more important for them?
Yes, that's a good point. (I dunno know the answer ... but I reckon that if Tesla has it, some others add it, then all manufactures will come under pressure to add it)
The TesalFi bloke hasn't added other brands yet (that I'm aware of). He has years of experience, and it would be a great cash-cow for him (I think it was a pay-my-way-through-Uni thing ... probably turned into a retire-when-I-leave-Uni thing!!)
I can't find any APPs for PowerWall - everything I've found is DIY / Boy's-Own
My day-job takes far too much of my time, and I think I'm well past the age of disassembling the Basic interpreter to add some keywords of my own ... so not sure I'd be any use in this field. But I'm going to have to do something soon ... can't be fagged to wait up until start of Off Peak to manually alter RESERVE and then fiddle with car charge rate during the day to balance it with PV output / PowerWall charge rate (and weather forecast, that I am using, is a lousy indicator of likely cloud density)
Perhaps I should sponsor a University Student Project ...