The build consists of an ESP32 hooked up to a Bosch BME680 air quality sensor. It measures pressure, temperature, humidity and gas resistance, and then with a closed source library, uses this to ...

The necklace consists of a series of Neopixel LED strips, housed within a tidy 3D ... A TinyPico V2, based on the ESP32, runs the show, as it’s very small and thus perfect for the wearable ...