Abstract: Relaxation oscillators are commonly used as sensor interface circuits where the frequency or period of the output signal is proportional to the sensor's output impedance. As such, the ...

The ESP8266 microcontroller is a favorite among makers for creating affordable, Wi-Fi-enabled sensor projects. Pairing it with a DHT22 temperature and humidity sensor is one of the easiest ways to get ...

Keeping plants alive is easy if you’re diligent and never forget to check on your green friends. However, a little electronic ...