0

Elastic Electric/Data/USB Cables

Elastic Electric/Data/USB Cables via the Adafruit forums.


Somewhat related!

Window-1-6

Conductive Rubber Cord Stretch Sensor + extras! 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.

Window-8

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.

In stock and shipping!


Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.

Join 7,500+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython in 2018 – Python on Microcontrollers is here!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — Despite multiple bankruptcies, RadioShack continues to find ways to keep the lights on

Wearables — Molding with glue

Electronics — A few words on inductor resistance

Biohacking — Running Blades

Python for Microcontrollers — Help bring CircuitPython to other languages!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



2 Comments

  1. Wow, this is really cool and innovative! I definitely look forward to seeing this in use on products.

  2. Can’t wait to see this under “new products.”

Sorry, the comment form is closed at this time.