The ID3 algorithm
87 mins
A short summary on the inner workings of the Iterative Dichotomiser 3 (ID3) decision tree algorithm, a small Python playground implementation and application to one toy and two real world datasets out of the world of biology and medicine
Controlling the Korad KA3005P using Python
13 mins
A short summary on how to control the Korad KA3005P power supply using Python as well as some simple samples on how to use my own control library
Developing native Python extensions in C - capturing from Video4Linux devices
30 mins
Since I was not really satisfied with various tutorials out there this is my personal summary on how to develop Python extensions in ANSI C. A simple library that captures frames from Video4Linux devices on various Unices without external dependencies will serve as an example.
Linear time dependent correlations using bivariate correlation and shifts
7 mins
A mini summary of how to use the bivariate correlation coefficient (Pearson correlation coefficient) together with shifts to get information about time based correlations between two different time series datasets
Controlling multiple heatbands using PWM via an Atmel AVR
11 mins
A mini project that summarizes a simple method to control a bunch of 100W silicone heatbands used to bake a vacuum system. Control is done using a PWM controller realized inside an AVR using a pretty simple implementation, remote control of the duty cycle is offered via an ESP8266 based WiFi capable NodeMCU
Statistics on chat service online status
21 mins
Playing around with scraping online status information from a social networks chat service and doing some statistical analysis
Dynamic imports in Python
4 mins
A simple summary on how to dynamically load modules from files in Python similar to the dlopen/dldsym/dlclose semantics in C
Implementing a simple websocket server in Python
7 mins
This is a simple short summary on how one can build a websocket server for use with ones JavaScript web application in Python using asyncio and websockets package
Logarithm and exponential function with OpAmps
7 mins
A summary how to implement the logarithmic and exponential function using operational amplifiers - and how to use this to build simple mixers when combining with a simple summation amplifier
