How to make a DIY flex sensor for VR gloves with velostat and copper foil

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This is a guide on how to make a flex sensor using velostat conductive plastic, copper foil, and laminate sheets. This creates a very robust bend or pressure sensor which I'm using for my DIY VR finger tracking glove.
The glove is based on the design by Lucas from LucidVR, you can find more information about his awesome project here: / lucasvrtech
Come join the LucidVR Tech Server!
/ discord
The supplies I used to build the glove are:
- 1/4" copper foil tape
- Photo pouch laminate sheets 4"x6"
- Velostat sheets from adafruit (correction from the video, the cost is $4.95 per sheet, but one sheet can make 20-30 bend sensors):
www.adafruit.com/product/1361
STL for the guide nodes is here:
github.com/edencomputing/bend...

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Опубликовано:

1 июл 2021

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Комментарии : 71

@lint_animations4372 3 года назад

you should make more videos they are really helpful!

@twidgevr 3 года назад

Audio levels are all over the place, apologies!

@finnmcv5353 3 года назад

Wow this is great

@Technicallyaddicted Год назад

You stole my idea lol. Lucas is an absolute legend, and thanks for doing all the hard work for me.

@alfredogamer 2 года назад

this is getting into so manys recommended. This is awesome! you should do sliveVr and RelativitysVr Headset

@Kanken-jl7oe 3 года назад

nice vid :)

@darkonikolic8377 2 года назад

Awesome, thanks a lot :')

@justfoodie8185 Год назад

Please upload full video of making

@DunstansShoe 2 года назад

Totes want to know about the joystick and buttons you've got there.

@ToniR96 2 года назад

this is cool... you sound a little bit like gabe Newell :'D

@aikokiss9529 2 года назад

Oh hey, it's twidge hi twidge!!!

@DesiredHeadshot 2 года назад

Not sure if games can handle what I'm talking about. But it would be cool to use this and make 10 smaller ones per hand so the first 2 joints from the tip can be read while allowing the 3rd joint to have it's own reading. curling the fingers vs making a fist if I'm explaining it well.

@peytonmac1131 2 года назад

These types of gloves just use the standard Valve Index software to simulate finger movements. If you wanted to learn VR game development then you could probably just program a game to use as many finger movements as you wanted.

@femmyvr3290 Год назад

Can we get a wiring guide? A normal POT has 3 Terminals so im kinda confused on how to use 2, Dose it just go to Positive and Sensor? Or GND to Sensor?

@ejpengineering1900 2 года назад

Your the discord guy!

@CINNDY_ 2 года назад

🌼

@lolzdatguy4987 Год назад

So what changes are required software wise?

@lorax_vr3547 2 года назад

Pls make a video of ading the buttons and analog joysticks to the glove i really wanna make two glove so badly pls thnx

@YTGreyFoxx 2 года назад

This would be awesome. I'm looking to do similar and would love to see how you did it!

@randallbro6749 2 года назад

How can you add haptic feedback to this?

@mikesnapper9001 2 года назад

this is pretty cool, although the problem is that if you want force feedback, which i think is a must with gloves, you still have to add the strings pretty much anyway

@blackjacksike1808 2 года назад

I'm pretty sure you can use magnets and flexible actuators for haptic feedback.

@Kitsunegami 2 года назад

well if you don't want haptic (i dont see why not but hey...) these are kinda more compact

@deadeyecowkillz7580 Год назад

which joystick you using

@waynefilkins8394 12 дней назад

if I buy adhesive laminating strips can I do it without getting laminator??

@vanlith520 2 года назад

What software are you using to translate the resistance changes to a model rig?

@peytonmac1131 2 года назад

Says in the description that he use Lucas from LucidVR. Check there for the programs.

@waynefilkins8394 12 дней назад

will 6 mil thick work well? I think the one u used in 4mil so just making sure

@drjml351 Год назад

I can not download the stl file. It appears to be missing

@MrGeoffrey1998 2 года назад

Have you compared your DIY sensors with the ones that can be bought already made at like 10 bucks a piece ?

@twidgevr 2 года назад

I have! They work a bit differently, even though they're similar and measuring the same motions, so it's hard to compare them directly. They probably have better longevity, and maybe a slightly smoother change in resistance but not by much. Overall they're pretty comparable in effect.

@philipnovcrete 2 года назад

is there a link or name for this?

@MrGeoffrey1998 2 года назад

@@twidgevr hi, didn't see your comment, okay awesome, thanks so much for the feedback !!

@franx1758 Год назад

Hello, how did you connect the negative and positive of the Flex sensor? How do I know which is positive and which is negative?

@twidgevr Год назад

it's "unidirectional" which means that it can't sense what direction you're bending it, just that you're bending it. becaues of that, it doesn't matter which side you connect to pos or neg.

@franx1758 Год назад

@@twidgevr ahh thank you very much, you also have to put a resonance yes or yes or or just connect like that? and to which pin would it be connected to the a0.5v and gnd?

@algomoth4758 2 года назад

Will you be releasing the modified aurdino code for the flex sensers

@twidgevr 2 года назад

no modifications needed if you're using the lucidgloves firmware, it'll "just work" more or less

@monekysunglsa6682 2 года назад

@@twidgevr what printing material is the guidenodes

@twidgevr 2 года назад

@@monekysunglsa6682 regular old PLA, nothing special. print them up on their ends and there's no overhangs or anything to worry about, they should print easily with whatever you've got

@parcival_vt 2 года назад

yo, try to use a slime vr tracker instead, that way its standalone and cheaper :0

@monekysunglsa6682 2 года назад

Wouldn't work

@ahmedahmedeg7941 2 года назад

I was curious whats the use of the copper foil in the first place? Can't i just solder the wires directly in the velostate, then i connect one wire in an output pin and the other wire in an input pin in the arduino?

@twidgevr 2 года назад

you will not be able to solder to the velostat sheet, it's plastic with a fairly low melting point.

@ahmedahmedeg7941 2 года назад

@@twidgevr I got it now, just a last question, why use two foils from both sides rather than useing a single foil on one side of the velostate and then solder the two wires in it?

@twidgevr 2 года назад

@@ahmedahmedeg7941 The property we're measuring is the called the "bulk resistance", and it's the amount of electrical resistance through the sheet of velostat which changes when you compress it. To measure that, you need an electrical contact on each side.

@lolzdatguy4987 Год назад

@@ahmedahmedeg7941 you would just be measuring the resistance of the copper sheet

@mundovtor 2 года назад

do you think this will do for making a lucidvr glove without any 3d printing?

@Theredstar2478 2 года назад

Yes but I don’t think you’d be able to get haptic feedback unless you mod mod it

@mundovtor 2 года назад

@@Theredstar2478 well yeah thats the main problem, nevertheless I find it quite interesting for a first time glove.

@Theredstar2478 2 года назад

@@mundovtor well yea, I was going to see, cause I really like this type of stuff, but I was going to try making an exoskeleton that connects at back and goes all the way to both wrists, only problem would be how to make the haptic feedback work, maybe multiple motors for all directions? Not too sure, also gotta have a lock so you don’t over expand your damn elbow and break it 🤣

@mundovtor 2 года назад

@@Theredstar2478 wow that's ambitious! Also consider that you would have to code some things for it to work I suppose. Best of luck my friend!

@Theredstar2478 2 года назад

@@mundovtor yup it will def be hard, but there’s like exoskeleton kinda things online, only thing is they’re expensive, and they aren’t for vr, I have to see if I can get my hands on the exoskeleton equipment just to see how it works and create one myself 🤔

@ahmedahmedeg7941 2 года назад

Can I use aluminum sheet in place of copper sheets?

@twidgevr 2 года назад

Yep that can work fine, the leads just need to be more conductive than the velostat. I've seen people use conductive string or even just stripped wire before.

@peytonmac1131 2 года назад

Like the aluminum foil used for cooking? Claims to be high heat resistance and ultra strong. I might give that a go.

@itrr3410 2 года назад

Does this work with aluminium foil instead of copper tape?

@franx1758 Год назад

yes, yes you can

@ano7371 2 года назад

what is the name of the tool on the back of the hand?

@monekysunglsa6682 2 года назад

Vive tracker

@parallelhighway4191 2 года назад

what resistors did you use ?

@twidgevr 2 года назад

I just used some 100 Ohm resistors i had lying around, they seem to match pretty well.

@parallelhighway4191 2 года назад

@@twidgevr thanks when I saw your sensors I found hope to build it in a simple way without a 3d printer I hope I can do it

@itromacoder3088 2 года назад

Man this video is visually crap but verry informative! Thanks!

@monekysunglsa6682 2 года назад

Do I need to laminate or could I use packing tape

@twidgevr 2 года назад

Packing tape can work pretty well, just try to make your process repeatable and accurate so they all come out similar. Small changes to compression or tension in the velostat can change the output a lot, but that's fine as long as all of your sensors behave the same.

@monekysunglsa6682 2 года назад

@@twidgevr also do you need resistors and if so what kind