In my case I used the well-known BD139 transistor and a 9V battery to provide power to the fan and transistor. The LM35 temperature sensor and red led are powered with 5V from the Arduino board. As ...

But why stop at manually turning the fan on and off ... You'll need a handful of components: an Arduino controller, a temperature and humidity sensor, an air quality sensor, and an LED display.

Perhaps you don't have indoor plants to take care of, or you're not interested in knowing what the current temperature ... an Arduino Nano and powered via a DC jack. Save for the small DC fan ...

Using motion detectors and an Arduino you can trigger lights, fans, or even an ... passes in front of a PIR sensor it detects the change in background temperature and then triggers an output ...

This articles describes how you can use I2C (TWI) communication, Arduino and temperature sensors to measure ... data is already printed in degrees because this is a digital temperature sensor so we ...

It’s done by monitoring conditions like temperature ... used by [934Virginia’s] Arduino library to compare the difference between your target climate and actual sensor readings in your greenhouse.

But long before the Pi was a gleam in its creators' eyes, there was the Arduino. Unveiled in 2005 ... The first steps were connecting the temperature sensor and RTC module to the screw shield ...

a pocket-sized temperature controlled iron that can be had for as little as $50 USD from the usual overseas suppliers. Whether or not you’re personally a fan of the portable irons compared to a ...