Octopus Electronic Bricks you can use them build electronics projects just as easy as piling bricks. By using Octopus electronic bricks you may connect Arduino / Freaduino compatible boards easily with various digital analog and I2C / Uart interfaces. These the breadboard-less firm connection are prepared to extensive modules like poteniometers sensors relays servoseven buttons just plug and play. - Octopus Analog Rotation Brick is Arduino compatible and can be rotated up to 300-degree. It is based on the potentiometer. With the Arduino IO expansion board in combination it can be very easy to achieve position-dependent interaction with the rotating effect or produce MIDI instrument. - The Freaduino Sensor Shield is the perfect shield to connect this sesnor to Arduino. Or Freaduino UNO which we had pre-stray Octopus Brick interface. - Power supply needs: 5V - Interface type: Analog - Pin Definition: S-Signal V-VCC G-GND - Wide detecting scope - Fast response and High sensitivity - 300-Degree rotation sensor - Comes with 3P cable (18cm)