What you need to know before starting your first project
Your 10 First Projects (Hero / UNO R3)
The 37 in 1 Sensor Kit
Learning Components
Your First 10 Projects With The Arduino/HERO Simulator
Code Like A Wizard
Wizard Coding

Touch Sensor

Detecting human touch is easy with a touch sensor. This is a capacitive sensor that takes no effort to activate. It has three pins: VCC, GND and DATA pin. If the sensor is touched output will be HIGH. If it is not touched the output will be LOW.

Diodes are constantly blinking unless the sensor is touched. As soon as the finger is lifted off the sensor, diodes are back to blinking.