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Stretch v1.2 $40.65US
 
2 - 6 : $38.62US ( save 5% )
7 - 19 : $36.59US ( save 10% )
20 + : $32.52US ( save 20% )
excl. sales tax

A sensor that behaves like an elastic string. Elongate it and see the sensor value change.

Application examples

  1. Use as a breathing sensor. Detect inhale/exhale cycles.
  2. Detect relative motion or vibration between two mostly stationary objects.

Technical specifications

Product Stretch sensor
Version 1.2 (July 2017)
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

  1. Our EditorX software allows you to configure the digitizer to process and map the sensor data of multiple sensors simultaneously.
  2. 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.
  3. 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.
  • This page was updated on Wednesday 06 September 2017.
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