[eval : february]

In the last two weeks I did not invest that much time into programming but was vacationing in the Austrian Alps instead. Nice for me. Still, I am somewhat finished with an early historic view on metering data on a monthly level. Since I do not want to keep that to myself - especially due…

[eval : charging smart]

Two posts ago, when showing how to do d3 charts, I mentioned that in the graphic presented smart charging was already visible in action. I will present another example from the last weekend where I had the chance to gather more data with the implemented algorithm. The inverter data summary is also updated and looks…

[smartics : d3]

Where to start? Besides work and being sick, I got some d3 visualizations done over the last weekend and follow-up nights. What's my take? I thought it will be more complicated in general, but less complicated for myself. So all in all it was quite some effort to get some specifics with axes, scaling and…

[smartics : charging smart]

In German there is this saying - freely translated: 'firstly it will be different, and secondly than you think'. The translation might not fit it so well but in general the idea is that even when you know it will come differently, the outcome will quite often be even more different than predicted. This, of…

[plan : charging smart]

Let me introduce a first model of how I'll build a smart charging algorithm. I will have to add one or two new methods for accessing statistical data but besides that, I think I'm already well set. In short: let's take excess energy depending on the predicted use for the current times. Overriding to quickly…

[plan : smart charger]

After laying some ground work by gathering energy use and production systematically, it's finally time to build up some smartness. I want to use excess energy of PV panels efficiently to charge an electric car. Here I will show you what's the plan and needed beforehand. First, what's needed is a charger that offers a…

[calc : save what?]

Tomorrow I'll continue with some code. Let's try to answer a question before: what is even worth saving? Where should we try to make devices more efficient and how much should it save that it's practically worth it? In the post from Dec. 30th I showed how much energy some larger consumers will approximately take.…

[calc : 1 energy please!]

Yesterday I threatened you with some numbers. Here we go. When we want to start a project, we often have to be careful not to over-engineer things. Especially when it comes to energy consumption and you think about better using and saving energy, we have to plan on which systems we'll need additionally and what…

[ˌmō-tə-ˈvā-shən]

So why do I write my own software for smart home automation? Let's cut back a bit and start with the question of why to make home automation smart at all? If you live in a small flat as a single household processes tend to be quite linear and simple. And so is usually the…