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Conductive Rubber Cord Stretch Sensor + extras

by OEM
Measuring stretch forces isn't easy - unless you have some conductive rubber cord.
09-00000519
Gross Weight: 0.01kg
Warranty: Δεν καλύπτεται με εγγύση απο τον Κατασκευαστή
Company: OEM
Part Number: ADA519
Made in: China
In Stock
Ships in 24 Hours
No stock in retail store
13.90
Without VAT 11.21
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DESCRIPTION

Measuring stretch forces isn't easy - unless you have some conductive rubber cord! This cord is 2mm diameter, and 1 meter long, made of carbon-black impregnated rubber. Usually this material is used for EMF gasketing, but its also very fun to play with. 

In a 'relaxed' state, the resistance is about 350 ohms per inch. As you pull on it, the resistance increases (the particles get further apart). As you stretch it out, the resistance increases linearly. So lets say you have a 6" piece - thats about 2.1 Kohms. Stretch it to 10" long and now it is 10"/6"*2.1K = 3.5 Kohms. You can stretch the rubber about 50-70% longer than the resting length, so a 6" piece shouldn't be stretched more than 10". Once the force is released, the rubber will shrink back, although its not very 'fast' and it takes a minute or two to revert to its original length. 

This stuff is fun, so we give you a full meter and also two alligator clips (to connect to the cord) and a 10K resistor. Together, you can use these to make a simple voltage divider. Then use our handy Thermistor tutorial to measure the analog voltage and convert that back to resistance.

Specifications:

  • Length: approximately 1 meter = 39 inches 
  • Diameter: 2mm 
  • Resistance: 350-400 ohms per inch / 140 - 160 ohms per centimeter

NoteWe give you a full meter and also two alligator clips (to connect to the cord) and a 10K 1% resistor. Together, you can use these to make a simple voltage divider. Then use our handy Thermistor tutorial to measure the analog voltage and convert that back to resistance.

SPECIFICATIONS

Warranty:
Δεν καλύπτεται με εγγύση απο τον Κατασκευαστή
Company:
OEM
Part Number:
ADA519
Gross Weight:
0.0079kg
Made in:
China