ThomasEgi
Comments
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pmma has amongst the highest permeability ratings i know. meaning your magnet will be exposed to moisture and might start rusting/decomposing on the long run. PMMA would be an okay candidate to protect the body from the implant as it is reasonably bioinert. But PMMA does a pretty poor job at protecting the implant from the…
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sensor magnets in the ears won't do too much. rfid-implant is pretty straight forward if you have someone to do it for you. If you do it yourself you'll have to prepare very well. more advanced stuff requires even more preparations
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MRI's have been discussed in the past. For example: https://forum.biohack.me/index.php?p=/discussion/comment/26033
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nickel is not bioproof/bioinert. Do NOT implant it. No matter how stressed your financial situation is, a visit in the ER won't help your finger or your financial situation. same goes for gold-coated magnets. while gold is somewhat inert the coating is faulty pretty much 100% of the time and over time, the magnet will…
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in fact you can. The sensation is not as potent as with the implanted version but you can sense strong magnetic fields by using double sided tape and a small magnet. Or the good old glue trick.
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yes. other than a lot of pain there isn't a lot to gain from switching the location to below-nail level. Mechanoreceptor density is highest near the skin, not below the nail afaik.
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orientation is most important for those tiny tags, and virtually impossible to get right for a door reader. A different reader coil design where you can insert your hand into the reading coil offers a lot more freedom. RFID-Based cat-flaps feature this sort of design. Also, door readers aren't exactly build to work with…
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to be a bit more precise: it's not nerve-endings as such but the high density of mechanoreceptors. Magnets act like a transducer. They convert the present magnetic field into tiny motion/vibration. This motion is very small so you need a lot of mechanoreceptors to pick it up. Luckily your fingers are "designed" to exactly…
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If you want a magnet with a proven track record go with the Haworth ones. Everything else can be considered experimental.
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firefiles hardly radiate outside the glass containment. There are test results regarding this on the forum (somewhere). IIR it's hardly different from regular background radiation. fun fact: i've been told that smuggling enough plutonium around to build toys of destruction won't set off any radiation detectors either (too…
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* access controll / unlocking stuff (doors, smartphones, external harddrives), some did subway tickets hacks, some did stuff like having a contact card stored on it. so it's mostly for fun. * RFID is the technology as such. NFC is a one of many specific subsets of RFID tech. * Depends on the size. Small glass capsule gives…
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https://forum.biohack.me/discussion/2064/powering-and-communication-with-implants-build-from-scratch
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building a coil and pumping current through it isn't that difficult, but doing it on a scale big enough to magnetize neodymium magnets does require resources and knowledge. I want to point out that the shape of a magnet has very big influence on it's thermal stability. A cylindrical magnet with 1mm diameter and 2mm length…
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only effect i'm aware of that permanent magnets have on the human body is to slightly increase local oxygen levels in the tissue due the iron contents of hemoglobin (iirc). Not really sure that'll do a whole lot. I've read reports that this effect ever so slightly improves healing processes, but really not that much.
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which cyanoacrylate did you use? generally I'd recommend to take them out because i very much doubt they'r long term stable (think about moisture and neodymium magnets).
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I suggest sending a pm. Maybe you can get a prototype or help creating demand for a new product.
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I won't be around. I'm few thousand kilometers too far away to give soldering instructions. If there's any research-result on your end be sure to share it. I'll do the same if i happen to run across valuable information.
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I'm not an expert on the topic myself. I just had to research it two days prior because i ran out of solder wire and didn't manage to get to reach an economical choice, hence my guestion. I ended up with a halogen free SnCu0.7 which is quite a bit different/more difficult to work with than my previous one (which i think…
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Will this be a regular getting started with soldering class or do you target to cover advanced implant tailored topics such as how to create high reliability joints, choice of alloys for materials you can encounter with implants etc ?
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Not so much a matter of implantation depth but the coupling factor. Those membership card readers basically have the reading antenna area sitting right on top of the transmitter antenna. So they get a really good coupling between the antenna , so they get really strong signals, so they don't need to bother with highly…
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no use if the scanner is not able to read the tag. you'd need a bigger antenna on your tag.
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Have i great time everyone. I'm bit on the other side of the planet but don't let that stop you from doing awesome stuff! Be sure to snap pictures and take notes so everyone can catch up with you.
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be sure to pick a silver oxide battery that comes without mercury, just in case.
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@crucible that's mainly because the industrial batteries are intended to be used for many years years while commercial batteries typically are allowed and desired to fail after 2 years. They hold up the same but the industrial datasheets are way more honest. @Torchwood , led's don't burn out, if properly operated they can…
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oh on a different note, you may want to use a battery technology that's not leaking or venting in first place (unless horribly abused). like NiMH can recombine the gas produced by overcharging within limits.
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it sounds a bit stupid but step one of safe battery handling is to get a safe battery. Your average china-toy-powering lipo does not qualify as such. Skipping over the datasheet you are not supposed to charge it in ambient temperatures higher than 45°C (and the body temperature is not that far away). It also needs to be…
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so you'd be left with tiny little pieces of material. The body usually doesn't like small particles either. I'd not be aware of any suited carrier fluid or coating for the tiny magnetic bits. If we had a good coating we'd already be using it. Also keep in mind that having small particles will lower your ratio between…
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with the potential to get said liquid into your bloodstream causing massive havoc? I'd rather recommend against that.
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Hi and welcome to the board. First things first, for your first idea, the proposed stuff is not even that unrealistic (and i sort of have to keep up a reputation to destroy unrealistic ideas here). So let's give it a quick rundown. RGB Led and a microcontroller, easy. Inductive charging, moderately difficult but proven to…
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question 4: no. They are passive devices powered by the reader. Unless the antenna fails due to mechanical stress you'r very unlikely to wear it out. There is a limit on the write-cycles but these typically range in the 10 thousands and more.