This is a small blog where I talk about tech, from servers to CNC. That is all.
About
I’m an occasional systems administrator who prefers self hosting over pay hosting or many ad driven services. I’m also a Java and C developer and engineer with a background in 3d design and an interest in 3d printing, lasers, etc. I also have no idea how to blog.
Blog
Home Assistant Markdown Cards
I have had XKCD comics in my home assistant dashboard for a while now, but never had the alt text or the title in the dashboard. I wasn’t entirely sure how to get those into the UI in a nice clean way (I’m not very good with the templates yet). I finally found the nice …
Playing Music on a Tag Reader
The tag reader, and it’s relative the NFCDeck have piezo buzzers in them. These can be used to play monotone music via PWM signal from an ESP. As an addition to this, there’s a simple music file format from the early years of cellphones that’s also supported by this system. Combine these together and we …
ESP32 Bluetooth Proxy and BLE Tracking
I recently started using ESP32s for my projects, mostly out of necessity for the flash sizes and GPIO capabilities, but they do bring in another interesting feature I haven’t made use of yet, Bluetooth capabilities. Each ESP32 can be used by home assistant as a Bluetooth proxy and BLE tracker. It should be a simple …