Product Image View 2clickable image to open product zoom

Adafruit Industries Conductive Rubber Cord Stretch Sensor extras

4 in stock at Cambridge Store
Located In DIYVIEW MAP

$9.99
Close Modal

Overview

SKU:
895904
Mfr Part #:
519
UPC:
P519

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. 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. It's not a true linear sensor, and the resistance may vary from batch to batch, so we consider it a way to measure stretching motion but isn't really precise.

Mini Product Image

Adafruit Industries Conductive Rubber Cord Stretch Sensor extras

4 in stock at Cambridge Store
Located In DIYVIEW MAP

$9.99
Activate Instant Pickup®
clickable tooltip for information on Instant PickupInstant Pickup® is the fastest way to reserve products for 18-minute in-store pickup at your selected store. You’ll receive an email when your reservation is ready. All reserved products must be picked up at your store within 3 days. (Learn more)
top
Add to my wish list