Step-by-step guide on designing and programming a custom I2C slave sensor device using Arduino. Trump overpowers Musk's attacks on mega tax bill with blizzard of orders Americans are filing for ...

I used an LCD shield to display the current temperature and speed of the fan, but you can use the circuit without the LCD display. You also need to select the transistor by the type of fan that you ...

If you want to make your own system for doing so, Instructables user ICStation shows off how to use an Arduino to do it. The system here monitors temperature, humidity, and smoke levels and alerts ...