The soil moisture sensor module , built around the LM393 comparator, gives an active-low (L) level output when the soil is dry (determined by a pre-setted threshold value). This digital output (wet ...

There are a flame sensor and a water pump up forward, as well. You can probably guess, the device notices a flame and rushes to squirt water on it. Continue reading “Arduino Fights Fire With… ...

It will also prepare the user on how to successfully hook the Velostat up to an Arduino and how to code for it. This module can be used from K-6. Materials not included in Arduino kit: Velostat ; ...