Today, a simple Arduino project that permit you to power on something connected to a 220v power using a simple relay.
![2Q==](https://i0.wp.com/www.albertopasca.it/whiletrue/wp-content/uploads/2017/02/2Q-768x768.jpg?resize=650%2C650&ssl=1)
Today, a simple Arduino project that permit you to power on something connected to a 220v power using a simple relay.
Habemus Arduino Fingerprint sensor!