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A sensor that behaves like an elastic string. Elongate it and see the sensor value change.
Application examples
- Use as a breathing sensor. Detect inhale/exhale cycles.
- 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. 0.2 x 20 cm (0.08 x 7.9 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 |
| Dimensions |
board: 13 x 11 x 5.0 mm (0.79 x 0.87 x 0.65 inch), sensor: approx. 0.2 x 170 cm (0.08 x 66.9 inch) |
| Mounting |
no mounting holes |
| Cable |
1.0 m (39 inch) shielded, red wire = power, black wire = ground, white wire = sensor output, extendable at least 100 m (328 ft) with ExtendCableD-10 |
| Connector |
male 1x4 plug with a row of 3 pins spaced 2.54 mm (0.100 inch) |
| Weight |
23 g (0.81 oz), incl. cable |
| Software support |
- Our SensePlay software is a very easy way to quickly map sensor data to (sequences of) sounds, images and videos using a drag & drop user interface.
- 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.
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| 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.
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