MH-Z19B CO2 sensor
To keep a healthy environment at home or at the workplace, one of the important things to control is the carbon dioxide (CO2) level. It’s measured in ppm (parts per million), indicating how many parts of CO2 there are in…
Category Computers
Improving WiFi reception with an ESP32-WROOM-32U
I’m using a ESP32 with ESPHome connected to my heating system for climate control, as expained in a previous post. The heating system is in a different builng than the router and I was experiencing some WiFi coverage issues (the…
WireGuard
I always used OpenVPN in my servers, but now WireGuard is a better option: I’m using it to remotely access private services in my home server. I setup a star topology, where all the VPN clients connect to the…
The LLM revolution
ChatGPT was launched in November 2022, and it changed our world as we knew it. Since then, Large Language Models (LLMs) have integrated into our daily workflows enhancing our productivity and the quality of our work. Another interesting milestone happened…
Opening Home Assistant to Internet
To make Google Assistant work with your Home Assistant, you need to provide a public URL with HTTPS access to HA. Here are the full instructions: But something that seems trivial, like publicly accessing services in your home server,…
Orange Pi 3B
I’ve never been a fan of the Raspberry Pi. In my opinion, it occupies an intermediate position where it is too underpowered for desktop use and too overpowered for IoT projects: So it’s place may be TV boxes (where I…
Pi-hole as home DNS and DHCP server
I encountered numerous issues with my network provider’s router DHCP. Since I haven’t yet decided to acquire another router, I opted to offload the DHCP server to another machine, which is currently running my Home Assistant and NAS. I was…
Climate control with ESPHome and Home Assistant
Two years ago I started to need controlling my home heating system while I’m not at home. I could go the easy way and buy a couple Nest thermostats, but I preferred the DIY way. ESP32 board with ESPHome I…
Apple Vision Pro and why it is going to fail
After the initial hype (with Apple showing some nice fake videos…), it seems that now things are much more quiet about the Vision Pro. I’m sure they are going to fail, like all the previous attemps on VR “failed”, or…
Slot Racing 10th anniversary
This year marks the 10th anniversary of my Slot Racing Android game. I had initially begun working on a 2.0 version, but I couldn’t find the time. A few months ago, I decided to merge the changes back into the…