my personal programming projects
Range is often treated as the defining metric of electric vehicles (EVs). For long-distance travels such as the upcoming summer holidays, the more relevant quantity is total travel time. A vehicle with shorter range but faster charging can outperform one with a larger battery, and driving faster does not necessarily reduce arrival time. To better [ ]
Since a couple of years I keep track of my spendings by analyzing my banking transactions. To get deeper insights, I label them into different categories. In the beginning I did this manually, but for a while I rely on Machine Learning for automatic classification, correcting wrong categories on the fly. In order to train [ ]
Recently I bought the book Hands-On Machine Learning by Aurélien Géron, of which the 4th edition just came out, see https://ageron.github.io/. It is a massive yet accessible book, which starts from the ground up and goes all the way to cutting edge AI applications like LLMs and Generative AI. It motivated me to revisit an [ ]
This year I ran my first Marathon. Half a year ago I ve already analyzed the results of a half marathon and found some interesting patterns in the finish time and age distributions. Back then I parsed a pdf, which was only partially working. This time no pdf was available and the results were distributed over [ ]
I own a smart power meter with which I track the energy production of my balcony solar plant. In my last post I described how I automized the download of the daily email reports, specifically the attached csv file which contains the power over time. These reports also contain the temperature throughout the day, but [ ]
A few weeks ago I got a smart power meter and started to track the power output of my balcony solar plant. The smart meter is coupled to the router, which can be configured to send daily email reports. I am using Gmail, which uses so-called labels to tag emails. I set up a filter [ ]
Recently I visited the Wildpark Bad Mergentheim where I stumbled upon a mathematical riddle concerning the reproduction of the Brown Rat. Here is the translated text: The Brown Rat a rodent for strong calculators A female rat can give birth 10 times a year, about 10 young each time. At the age of three [ ]
In the last post, I analyzed the power generation and usage of a roof-installed solar plant. If no own roof is available, balcony solar plants offer a cheap way to reduce domestic power consumption. Contrary to large solar plants, usually no power is sold into the grid, but rather excess power is fed-in for free. [ ]
My father in law has a solar energy plant on his roof and keeps track of the produced energy and his energy consumption in an Excel sheet. I was interested in the data myself and offered to generate some nice graphs for him. The chart above clarifies the energy flow between the solar plant, the [ ]
Last weekend I ran the half marathon in Mainz. The race results are available on the event website. They contain the total position for each finisher as well as the positions inside the respective gender and age groups. Unfortunately neither overall statistics nor the total sizes of the sub groups are available, so I decided [ ]