sensor elektor april 1981 — 4-19 Before dealing with the circuit itself, it will be as well to define humidity as such. What is known as the absolute humidity is the number of grammes of water per ...

This project is used for the security purpose and safe you from the fire Sparke or something happen its gives you a waring message to your phone and you can be aware of the disaster. #include <Wire.h> ...

#define LOG_INTERVAL 1000 // mills between entries (reduce to take more/faster data) #define SYNC_INTERVAL 600*LOG_INTERVAL // mills between calls to flush() - to write data to the card // how many ...