Sparkfun: Flex Sensor

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The: product. The datasheet.

Inputs and Outputs

As for inputs and outputs, the sensor is basically a resistor and thus should be read from the analog input pins. To work with the analog input, you must put 1k ohm resistor from analog ground to the analog input you choose then connect the sensor from the analog VDD to the analog input you choose. The input voltage can then be read by the processor to determine how far the flex sensor is being bent (flexed).

Bone Usage

Reading and Interpreting Analog Input Data

Sample C Code