Analog Sensors using arduino • Tech Projects

Analog sensors produce an analog (continuous) voltage that typically varies from 0 to 5 volts. They have three wires – ground, power, and signal (typically red, black, and white, respectively). Examples shown below include:

Potentiometers
Proximity
Accelerometers
Ribbon
Bend
Pressure
Light
Temperature
Sound
Multi-touch
Touch
Other

Potentiometers

Potentiometers typically measure rotation or linear travel, and are used in car stereos, dimmers, equalizers, etc. to input a continuous range of values.

Single Turn, 360degree travel, Continuous Turn Pot

Mouser part: 594-357-00-103
Digikey part: 6639S-1-103-ND

10 Turn Pot

DigiKey Parts: 3590S-2-103L-ND, SP534-10K-ND
Mouser Part: 858-7276R10KL.25

Proximity

Proximity sensors measure the distance from the sensor to an obstructing object in front of the sensor. There are two types, Infrared and Sonar. The infrared sensors are cheaper, but the sonar sensors are typically more accurate.

Sonar sensor: http://www.sparkfun.com/commerce/product_info.php?products_id=639
Sonar sensor, fully wired: http://infusionsystems.com/catalog/product_info.php/products_id/15

8″ – 60″ IR sensor: http://acroname.com/robotics/parts/R144-GP2Y0A02YK.html
4″ – 30″ IR sensor: http://acroname.com/robotics/parts/R48-IR12.html

Accelerometers

Accelerometers sense motion and are used to detect changes in position, tilt, and orientation. They come in a variety of configurations (number of axes, e.g.) and sensitivities.

Ribbon

Ribbon sensors measure the position of a finger touch across a surface (one dimension only)

Other

air pressure

tilt

humidity

touch position 2D (trackpad)

joystick

compass

Bend

Bend sensors measure the bend or flex of what they are attached to.

http://www.sparkfun.com/commerce/pro…oducts_id=8606
http://www.imagesco.com/sensors/flex-sensor.html
Bi-Directional Bend sensor: http://infusionsystems.com/catalog/product_info.php/products_id/54