Come on down to crazy Amal's flex-o-ramma-ramma!

Yeah okay. I thought so. My middle finger is okay for length, but again… it’s too often too close to machinery. And yes, it’s dangerous to cut stuff open there - I know that from experience.

I just “simulated” punching several overlapping holes with standard round punches. Here for instance, one 15mm punch hole smack at the center, one off to the left and down, and 2 smaller partial cutouts with a 6mm punch to the right and up:

Or I suppose you could also use an even smaller punch and follow the shape around inside to create a custom cutout with a standard tool.

Wouldn’t that work? Why make a custom-routed punch?

all I can think of are these

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So I made my FauxNext out of paper with a dozen layers of clear tape over it to simulate the stiffness of a Flex device.

I tried it on the back of my hand: it’ll work, and it doesn’t even feel that awkward at all. But the positioning needs to be surprisingly precise: too far forward and it’ll bend with the knuckles. Too far backwards and it’ll bend with the wrist. And since it’s already slightly bend left-to-right due to the curvature of the back of the hand, it’s not going to end well if it gets bent in the other direction. Also, I feel it should be contained entirely within the space of the metacarpals - i.e. no overhang on the blade or on the thenar area:


I tried it on my forearm too: it’d work, but good thing I don’t wear a watch :slight_smile: Also, again, it can’t be too close to the wrist to avoid bending in both directions:


I think the major problem with the back-of-the-hand placement is the risk of collision with something. For the wrist, the risk seems to be that it’s extremely easy to crumple. Hmm…

I’m gonna ponder some more, but I think I’ll end up pulling the ole credit card…

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really nice job simulating with the fauxnext :slight_smile:


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Yes I did try the forehead: it’s not working out all that well actually. The problem is, you’re trying to paste a flat, somewhat stiff disk onto a sphere. It doesn’t want to and it actually creates wrinkles if you insist. Definitely not good.

There is one perfect location for that implant: the temple. it’s truly flat, the skin is reasonably taut, it’s not soft underneath (well, for most people anyway…) The problems with that location are:

  • do you really want to tell people to bring their cellphone to your head to share whatever information is on the chip? Or headbutt the reader to log in?
  • I wear glasses. I’d have to take them off each time I want to read the implant.

And no, you ain’t getting a photo of my ugly mush :slight_smile:

I actually cut the inside with punches (I didn’t have 15mm, but I made do with 4 to 10). But I forgot to do it the way you would - that is, first hollow out the naked tag as close to the traces as possible, then “bio-coat” it with packing tape, then hollow out the tape leaving a 2 or 3 mm safety rim. I had already put the tape on the paper disk before I realized I should have tried that for accuracy.

I’ll try it tomorrow. But it looks perfectly doable, provided the backing for the punches has zero give, to avoid deforming the tag when hammering the punch through.

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omg that would be the most amazing fucking magic trick ever!

I will now telepathically push my contact details to your phone…


Hmm… Interesting, I didn’t consider that. It has a strange sort of appeal actually :slight_smile:
Still, I don’t want to bang my head on the table to log into my computer…

I know at least 2 coders who do that willingly :rofl:


Well, there’s something about that implant that puts me off. The aluminum foil thing probably, too much detached skin despite the cutout, too close to the joints. Sorry, I’ve had a long hard think and… I dunno, there’s something that doesn’t sit well with me.

So I tried something else. Amal, would you be able to make a FlexMT without the LF chip, possibly with a NTAG 21x chip instead of a M1k, and possibly with a blinky over the chip if it doesn’t kill performances like you said it does with the Bullseye?

Sort of like this:

w/o blinky

with blinky

That would be a 33mm diameter implant with a 14mm x 14mm area of detached skin at the worst point - above the chip - and only 6mm over the rest of the coil. It would be much more reasonable than the 41mm bullseye with the smaller center cutout.

Also, I made a FauxMT and tried it for fit: It works a lot better on the back of the hand and on the wrist, and easily stays clear of any joints:

So, doable you reckon?

The blinky can’t go over the chip. These chips are typical chinese COB package with a full metal backing which totally kills the led nail thing. I could make a custom flexMT with no blinky, no LF chip, and a center cutout though.

Okay I thought so. Doesn’t kill to ask though.
NTAG instead of M1k possible?

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Not likely… the antenna is totally tuned differently for these chinese magic chips and would not be possible to just swap out… if you found an ntag attached to a wire wound antenna like this is be happy to try working with it.

Okay I didn’t think so either.

So essentially I’d be ordering a very large FlexM1 :slight_smile: It’s tempting, as I’m not overly impressed with the range of the FlexM1 I’ve ordered but haven’t implanted yet.

Let me sleep on it before hitting the webshop.

In any case, thanks a lot for your help!

Amal, sorry to be such a bother. Still trying to decide…

On the centerless FlexNext, would rotating 2 of the blinkies 90 degrees and pushing the 3rd outward a bit to maximize the center cutout be an option? Would it hurt performances?

I’m thinking, what the hell, I should go with the big-ass version and see what happens. And for once, I’m almost wanting to go for some showmanship instead of sticking to the strictly functional. If the blinkies could be there with the biggest possible center cutout, I think that’ll push me over the edge…

By the way, send me the bill for the lengthy “customer fitting service” if you like :slight_smile:

No bother at all… measure twice, cut once… especially if it’s skin you’re cutting :wink:

No not really, but it will make it less flexible, like a 2x4 flipped up on it’s side instead of laying flat… though not that dramatic of a difference.

hah naa just the custom order is good enough. one thing to note though… i’m running out of basically every color of LED… i didn’t have that many to start so I’ve ordered a ton more, but they are going to take some time to get here. What color did you want again?

Yeah but you know… when you go for a bespoke suit and the tailor is ever so nice and polite, as they should be, but you detect that faint trace of annoyance on his face after you’ve been dithering for an hour on what cloths and colors to pick… :slight_smile:

Also, I have a feeling I’m turning this thread into my personal fitting session. Sorry you guys! But maybe this will be helpful to other people who have the same concerns I have.

Yeah okay. I expect it to be less flexible naturally.

Thanks for the video! I can see how it definitely would affect performances if you get the placement wrong.

Green would be good. If you have 3 left, can you set them aside? I’ll place my order when I arrive at work (right now I’m in my velomobile on the way - should be at my desk in 2 hours :slight_smile:)

Actually I never had green here… they are coming in the big order. Doing this order and shipping will probably take around a couple weeks or so.