# Home Assistant
Flash OpenDTU to an ESP32 Wroom
My vaccum robot decided to eat the cable of my ESP32 which was running OpenDTU and in the process the USB connector was ripped of the board. So I had to replace the ESP32 and flash and install OpenDTU. This process is documented here for my future self and others.
LinkManual Water Meter Tracking in Home Assistant
For a long time I wanted to track my water consumption in Home Assistant. I had my eye on projects like "AI on the edge - watermeter" which allow to read out analog meters automatically. I just do not have time for another DIY project at the moment, therefore a cool new fancy solution has to wait. I wanted a simple, quick, "good enough" solution. I came up with something that is not perfect and requires manually reading the water meter, but it only took me 30 minutes to set up.
LinkControl lights in Home Assistant from within a 2D Browser Game
A friend of mine and I talked about the idea to control lights in Home Assistant from within a 2D browser game for a while. I used the bad weather over the weekend and I finally took some time to create a proof of concept.
LinkUse a speaker with Home Assistant on a RaspberryPi to output audio messages
For a long time I wanted to add audio to my Home Assistant Setup. My first use case is that I want Home Assistant to literally tell me when I should air my room based on the current CO2 value.
LinkBackup Home Assistant data to a Diskstation using rsync
How to setup rsync on a Synology Diskstation and use it to backup data from Home Assistant to the NAS.
LinkPower on and off Diskstation with Home Assistant
I use my Synology Diskstation mainly as a backup device. Therefore it does not need to run all the time. In the past I configured a Power schedule directly within the Diskstation. It would turn on at a certain time and power off every night. Now I wanted a smarter behaviour e.g. I would like to automatically turn on the Diskstation when I come home, so my Smartphone can backup data. Another example would be to power on the diskstation to store a Home Assistant Backup and afterwards power it off again. Also it would be nice if I could turn it off with my good night-Switch next to my bed. I achieved this by controlling the Diskstation via Home Assistant. This article describes the configuration steps, necessary for this.
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