You'll need a handful of components: an Arduino controller, a temperature and humidity sensor, an air quality ... you can create a smartwatch roughly the size of an Apple watch.

When you think of Arduino projects, your mind likely goes straight to RFID door locks, weather sensors, or automated ... what the current temperature and humidity levels are in your home.

If you’re going to develop another Arduino-compatible board these ... dubbed the “Ambient Board”—is a buffet of sensors: temperature, humidity, CO, NO2, light intensity, and a microphone ...