Emporia Vue 2 Custom Firmware
About a year ago, I found myself on the hunt for energy meters compatible with my power distribution box and stumbled upon Vue 2 by Emporia Energy. This device, with its support for three primary phases and 16 individual subnets, intrigued me. One of its...
ESP32 / Kenwood XS8/SL16 Remote
This is just a quite short and incomplete article, compared to the previous ones. On a rainy sunday afternoon I wondered if our audio receiver, a Kenwood KRF-V 7060, has some serial protocol which allows me to remote control the receiver via home assistant. I...
An IoT Geiger Counter
Building an ESP32 based geiger counter, for reporting radiation levels to a time series database, visualizing with grafana
Fuel Pressure Gauge for an Oldtimer
Some day a close relative contacted me and told me about a problem with his Porsche 911F Targa, built in 1971 and laboriously restored over the course of a few years. It is a great car, but when driving longer distances, the engine sometimes suddenly...
[ESP32] A tiny WiFi/BT to (true) RS232 adapter
Ages ago I received a defective Keithley SourceMeter 2400 that I could easily repair. I also have an old AOR A5000. Both are remotely controllable using their RS232 interface. But nowadays long RS232 cables aren’t quite state of the art and placing USB cables through...
[MES-WiFi] Bringing a Windhager PMX150 pellet heater online
Since we own our house with a pellet heating system, it does its job day for day and delivers the warmth you’d expect from it. It rarely fails. Well, rarely. Except when I forget to refill the pellet container which has to be done every...