ANAVI Thermometer

by ANAVI Technology

An ESP8266-powered, open source, Wi-Fi dev board with temperature and humidity sensors

View all updates Oct 15, 2020

Field Report: An open thermometer for an open thermostat, a love story

by Antonio Tapiador

HestiaPi showing connected Anavi Thermometer

When I started setting up my home automation project, I gave myself the goal of using only open hardware and software. But, I wasn’t sure I could accomplish it until I found two amazing open projects: HestiaPi and Anavi Thermometer.

The first thing I needed to do was install the HestiaPi and get it connected to my existing central heating system. After some minor technical challenges, I got the HestiaPi online and working well with my system. Having root access to your thermostat is pretty cool! Besides the capabilities of OpenHAB, the touch screen has built-in HTML and Javascript, so I can customize it further.

While the system was working well, I needed it to be able to respond to conditions in different rooms, not just the living room where the HestiaPi is located. So, the next step was to add a second thermometer in the bedroom that could send data to drive the thermostat. I was lucky to discover Leon Anavi’s open thermometer project.

I modified the Hestia Pi’s UI and logic to integrate with ANAVI Thermometer and I set up the thermometer for use in the bedroom. Namely, I changed the OLED display to white, modified the display layout, added a light sensor, and programmed the ANAVI thermometer display to fade out and turn off when the bedroom lights turn off. To mount the thermometer, I 3D-printed a nifty case I found in another Field Report.

Anavi thermometer in its 3D-printed case

I am grateful to these two great open projects. I have played a lot with them and learned many things. Customizing my own setup gave me a real feeling of accomplishment. Please visit my blog for more details, links to code, etc.

About the Author

Antonio Tapiador

atapiador  ·  atd  ·   Madrid, Spain

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Product Choices


ANAVI Thermometer

Open source hardware WiFi board for measuring temperature and humidity. Includes one ANAVI Thermometer (1).


Starter Kit

The perfect kit for getting started. Includes one ANAVI Thermometer (1), acrylic enclosure (1), 0.96" OLED Display (1) and USB-to-serial debug cable (1).


Advanced Kit

The kit for awesome home automation and fish tanks. Includes one ANAVI Thermometer (1), acrylic enclosure (1), 0.96" OLED Display (1), USB-to-serial debug cable (1), light (1) and waterproof temperature (1) sensor modules.


Developer Kit

Everything a developer needs! Includes one ANAVI Thermometer (1), acrylic enclosure (1), 0.96" OLED Display (1), USB-to-serial debug cable (1) and all sensor modules: light (1), gestures & color recognition (1), waterproof temperature (1), barometric pressure and temperature (1).


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