Introduction – a practical need I want to automate the task of changing when my house heater turns on or off. You’re probably thinking, use a thermostat. That works with conventional forced air heating. We use radiant floor heating that is from the hot water supply for the home. There is a wider hysteresis. It’s more likely the warmth effects will last longer after the conventional thermostat triggers off. This is also the case when it needs to heat the…
Introduction – rapid deploy many or custom build one In this topic I’ll cover the steps to backup and restore a RPi. There are numerous write ups about the subject, so I feel a bit plagiaristic about doing this. However, giving someone to ability to save time and effort is worth it. I will give credit to Whitson Gordon who posted steps that I found online. I’ll try not to be too verbatim, adding some of my reasoning and experiences….
Introduction – There is more to the picture for the eye In the last post we extracted data from images and processed it. In this post we will cover the topic of image manipulation based on external data. This is useful because it allows us to combine data sets into a single point of observation. I’ll go through how to take an image and convert it based on variable conditions. I’ll also cover how to overlay text data into an…