CO2 sensor with LCD and ESP32-C3 Supermini
I wanted to add an LCD screen to my CO2 sensor, so I bought a white LCD 1602 with an I2C controller. The I2C controller needs to be soldered to the LCD, but my basic soldering skills were sufficient for…
Tag iot
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…
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…
ESPHome in a RTL8710BX smart plug
I bought from a popular chinese store a generic Tuya smart plug with power monitoring. It was extrememly cheap, costing less than 4 EUR. And of course I bought it to play trying to flash ESPHome. The first challenge was…
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…