[explain : legacy system]

In a recent project I had the chance to rebuild an older backend from zero. I was able to deliver on time and budget after 240 hours. Furthermore, all closed-source dependencies got removed and even functionality improvements were made. Let me explain and summarize what was done. what came before war in a Tomcat 8…

[smartics : react]

This weekend it was time to finally start on some frontend work. I'm staying with react and webpack as I wanted to get into those for quite some time now. Major other points I take into account are staying flexible and keeping the load on the raspberry pi low. I'm starting by showing how the…

[smartics : charger]

To apply some smart logic for getting excess energy into the car I need to set some data on the charger. Like I wrote last time, since I own an go-e charger I will build a service to access its API. I will keep it simple and just add methods to read the chargers current…

[smartics : scheduler]

Today I want to follow up on my post about metering data. I already mentioned that I'm going for three similar but a little different data batches. The queries to get the data will be triggered at different times: MeteringDataSec will be triggered every five seconds, MeteringDataMin is triggered every five minutes and MeteringDataDay is…

[smartics : metering]

I showed in the post a few days ago how to access inverter data [1.], now it's time to query the current values for a day. A word of caution though: all code I write about in these posts is supposed to run in the environment it was meant for. It should work, but I…

[smartics : inverter]

Before I bore you with statistics in the next post, I'll do so with a little intro into the application and code: There are already plenty of pages on how to setup a simple Java web application [1.]. Therefore, I'm just going to summarize what I will be dealing with and a bit of background…