Application examples

Technical specifications

Product			Stretch sensor
Version			1.1 (April 2013)
Sensing parameter			elongation
Sensing method			piezo-resistive
Range			approx. 10 cm (larger stretch may damage product)
Active area			approx. 25 x 0.15 cm (10 x 0.059 inch)
Output impedance			1 kOhm (at rest) to 1.5 kOhm (at maximum stretch)
Calibration
Elongation			Voltage (use 5 V power supply)	7-bit MIDI value (use 'no processing' editor preset)
0			0	0
TBD			5	127
Power supply			1.0 to 10 V DC, 0.25 mA at 5 V
Weight			23 g (0.81 oz), incl. cable
Cable			1.0 m (39 inch) shielded, red wire = power, black wire = ground, white wire = sensor output, maximum extension 30 m (98 ft)
Connector			male plug with a row of 3 pins spaced 2.54 mm (0.100 inch)
Software support			Our EditorX software allows you to configure the digitizer to process and map the sensor data of multiple sensors simultaneously. Our Link software allows you to receive the sensor data from the digitizer and use your computer to view, calibrate, record, process and map the sensor data of multiple sensors simultaneously. Our SensorX software allows you to receive the sensor data from the digitizer and use your computer to view, calibrate, record, process and map the data of a single sensor.
Application notes			Due to hysteresis, the sensor output curve (elongation distance versus pulling force) will not be the same when increasing the pulling force versus decreasing the force. Stretching the elastic part of the sensor beyond the maximum range may damage the sensor. To use the sensor for detection of breathing cycles, place the sensor around the chest and use the drawstring toggle to tighten it. Let the sensor adjust itself, then measure the change in elongation. Exhaling will be represented by a downward trend in the signal output.