Soft Sensors

Circuit

Here is the voltage divider circuit to use to connect your soft switch to an Arduino. If you want to learn more about voltage dividers, check out this post by Sparkfun or this post by Kobakant.

Code

Here are links to different Arduino sketches you can use with these sensors:

• Fabric Sensors. This combines smoothing, constrain, and mapping. It will work with bend, stretch, and pressure. You just need to adjust the numbers where specified in the sketch.
• Analog Tilt Potentiometer
• Reading Sensor Values with Mapping
• Constrain
• Smoothing
• Calibration
• Calibration with Serial
• Calibration with Smoothing

Sensors

 

PRESSURE

When pressed, the resistance decreases allowing more electricity to flow through the circuit. Use this to track pressure/weight on an interface or object.

VELOSTAT

Demo

//coming soon!

Construction

Code
Diagrams:

EEONTEX

Demo

Construction

Code
Diagrams:

BEND

Resistance decreases as bent and more contact is made. Very similar to a pressure sensor, but better for measuring joint movement.

Demo

Construction

Code
Diagrams:

POTENTIOMETER

Adjust resistance by connecting conductive and resistive material through a wiper at different points in the circuit. The farther away, the more resistance.

KNIT CIRCULAR POTENTIOMETER

Demo

Construction

Code
Diagrams:

FABRIC LINEAR POTENTIOMETER

Demo

Construction

Code
Diagrams:

ANALOG TILT SENSOR

Demo

Construction

Code
Diagrams:

STRETCH

The more a resistive material is stretched, the more its resistance will increase because it has more surface area to cover.

FABRIC

Demo

Construction

Code
Diagrams:

KNIT

Demo

Construction

Code
Diagrams: