Living in Germany we are facing sky rocketing primary energy prices due to a neglected renewable energy transformation in the past. However, with more and more attractive pricing of PV modules and LiFePO4 batteries, even Read More …
Long time, no see! Some years ago, I started a project to develop some low power environmental sensors. But for different reasons, the project was on hold obviously. There were a few working prototypes but Read More …
In an effort to counter my own forgetfulness to water the plant in my apartment and on my balcony, I tried myself on developing a soil moisture sensor device. Since I wanted it to run Read More …
While for all of us the year 2020 was the year of the virus, for me it was also the year of Pen & Paper RPGs. Thanks to online tools like roll20.net and more recently Read More …
I designed the circuit with the idea to use batteries without a voltage regulator, because they use current every time. The sensor board should stay in low power mode most of the time, so a Read More …
This is the first and unexpectedly working (!) prototype: It has a dimension of 80 mm x 80 mm. The strange shape is because a had a case in mind. Therefore, I had to align Read More …
I made my first IOT experiences with the ESP8266 with the ESP-Easy firmware. Therefore, I wanted to keep the hardware compatible. For performance reasons, I later switched to my own code (which I will publish in the Read More …
This series about my home automation sensor nodes can also be seen on hackaday.io: https://hackaday.io/project/20588-espmobe-battery-powered-esp8266-iot-sensor I like home automation a lot. For automation purposes data must be collected. I also like open software. But mostly Read More …
I recently bought the QJE QJ3005P bench-top power supply. It’s a sub-100€ supply, that goes up to 30V and 5A, which should be more than sufficient for most stuff I do. There seem to be Read More …
This is actually a project I did quite a while ago (the git repository goes back to September 2014), when the WS2812 LEDs became really popular and ubiquitous. Naturally, I had to get a 5 Read More …