Implant stimulation, hearing aids, and coil watches.
So this post is basically me exploding all of the ideas that have recently come to light and how biohacking can merge with another field. So, let me know if I end up making NO sense at all.
My mom is hard of hearing (legally deaf) and uses hearing aids, sign language, reads lips etc. Hearing aids have a mode on them called T-coil or Telecoil which was originally developed to help hearing aid users on cellphones. The concept behind T-coils is that the microphone within the hearing aid is used to receive electromagnetic signals instead of sound. Back in the day of brick phones, the mic and speaker in phones utilized big magnets that created big EMF. So they helped hearing aid people talk on the phone. Sadly, today's electronics are much more efficient and don't spit out as much EMF. But most phones still have a mode called HAC (Hearing Aid Compatible) that allows for the use of T-coils. I turned it on and called my voicemail and voila! I could feel the automated messenger lady vibrating in my magnetic implant (in my ring finger). Given the fact that I've only had magnet powers for a month, I can only imagine that this'll become more sensitive as the nerves grow back.
Today, along with a techno-buddy, I built a small EMP generator using a disposable camera's capacitor, a AAA, and some old earbuds. The earbuds have a coil in them that acts as the EMF antenna, firing out the pulse.
First, we tested to see if I could feel the pulse at an inch away and I felt nothing.
So we moved on to 3/4 inch, where I could feel the pulse. Sadly, no exact measurements, but a successful build at least.
Half inch.
Quarter inch. At this point, I could feel the magnet in the earbuds pulling on my finger.
Point blank.
Then, having confirmed that the coil worked, we tested to see if it was creating an omnidirectional field or if it was directional. Sadly, as we expected, it was bidirectional, shooting EMF both forward and backward, but not to the sides.
So, even though these tests were redundant to many of you (and subjective, and flawed ((we had a lot of unwanted arching)), and inconsistent), they showed us a couple things. One, a pulse of EMF can stimulate a magnet implant without pain and work as a sort of notification. Two, EMPs are not omnidirectional. Three, even with a crappy pair of headphones and a camera capacitor, a distance of 3/4 inch can be traversed without substantial EMF dissipation.
These tests will hopefully lead to future endeavors including a magnet stimulating watch and possibly a full room wireless magnet stimulation system.
My mom is hard of hearing (legally deaf) and uses hearing aids, sign language, reads lips etc. Hearing aids have a mode on them called T-coil or Telecoil which was originally developed to help hearing aid users on cellphones. The concept behind T-coils is that the microphone within the hearing aid is used to receive electromagnetic signals instead of sound. Back in the day of brick phones, the mic and speaker in phones utilized big magnets that created big EMF. So they helped hearing aid people talk on the phone. Sadly, today's electronics are much more efficient and don't spit out as much EMF. But most phones still have a mode called HAC (Hearing Aid Compatible) that allows for the use of T-coils. I turned it on and called my voicemail and voila! I could feel the automated messenger lady vibrating in my magnetic implant (in my ring finger). Given the fact that I've only had magnet powers for a month, I can only imagine that this'll become more sensitive as the nerves grow back.
Today, along with a techno-buddy, I built a small EMP generator using a disposable camera's capacitor, a AAA, and some old earbuds. The earbuds have a coil in them that acts as the EMF antenna, firing out the pulse.
First, we tested to see if I could feel the pulse at an inch away and I felt nothing.
So we moved on to 3/4 inch, where I could feel the pulse. Sadly, no exact measurements, but a successful build at least.
Half inch.
Quarter inch. At this point, I could feel the magnet in the earbuds pulling on my finger.
Point blank.
Then, having confirmed that the coil worked, we tested to see if it was creating an omnidirectional field or if it was directional. Sadly, as we expected, it was bidirectional, shooting EMF both forward and backward, but not to the sides.
So, even though these tests were redundant to many of you (and subjective, and flawed ((we had a lot of unwanted arching)), and inconsistent), they showed us a couple things. One, a pulse of EMF can stimulate a magnet implant without pain and work as a sort of notification. Two, EMPs are not omnidirectional. Three, even with a crappy pair of headphones and a camera capacitor, a distance of 3/4 inch can be traversed without substantial EMF dissipation.
These tests will hopefully lead to future endeavors including a magnet stimulating watch and possibly a full room wireless magnet stimulation system.
Tagged:
Comments
But before even that happens, we definitely need to create a bigger pulse. We guesstimated about 9 inches from wrist to magnet for a watchband coil and at this point we can't stimulate from an inch away. Improvement is required.
In order to be stronger, we obviously need to build our own solenoid with more coils than the headphones have and with a higher current. Beyond that, it's all about testing. Fun stuff though.
How could i make something like this, I want a standard 3.5mm jack end, so i can put it into devices with that socket, pc for example.
Interesting things to figure out would be the resonant frequencies of your implant, the reluctance period and the minimum field strength for a tactile response.
The orientation of the magnet would have a huge impact on the use of a wrist mounted EMF source, which makes it an interesting design challenge, considering that the magnet is very mobile relative to the source.
It's what i want but i've got no idea.
I could try to build that, but if i could pay 5$ from China then i would.
Tried to see if a guitar amp would work, couldn't feel anything other than air moving. So i took the thing out, and i can feel it near the actual coil.
with overdrive on, you feel it harder, but the coil gets hot.The guitar amp is a bit big, a little usb powered would be better, do they exist?
Little like the one made in the video, a search for amps, just brings guitar amps.--'
When I say I'd pay $5, I'd pay in GBP.
strength of the magnetic field is what will provide the force to vibrate
the embedded magnet. For an application like this, the electromagnetic
strength in the coil is relative to current. The amp you're looking at, the LM386 can only output about 125mW. A household guitar amp can usually push between 5W and 15W.
However, an LM based circuit would PROBABLY work for a transmitter within an inch or two. The difference between the magnet in your finger and one on say, a speaker is that the fields won't be aligned as well, and your magnet is not going to be able to move freely. I'd have to run some tests on someone with a magnet to really get some solid numbers as to how much of a field it takes to get a tactile response. It's all very subjective as well. How much force does it take to create a compression wave in your flesh? How sensitive to it are you?
It's definitely doable with household parts, I probably have most of those parts around somewhere.
I definitely plan to get a magnet and become active in the haptic subgroup, so if anyone wants me to try and build a tactile magnetic bumper like the bottlenose, I'll give it a shot.
Good idea with the ring and fingerphone idea, that's clever.
Is it normal for the coil in a guitar amp to heat up?
Why does the neck coil not heat up? size? the coil in the amp would be moving under normal operation, would that cool it?
Would a ring coil heat up? ring as in jewelery. Or a bracelet, mentioned somewhere before.
Q = I2Rt, where Q is heat, I is current, R is resistance and t is time
Guitar amps usually do heat up, because they run more power. While the coil does move and have airflow, it's not a primary mode of cooling. A smaller personal coil would heat up, but not significantly. The cheap chinese LM circuit would probably get fairly warm though.
Most Audio amps are one of the following classes:
A: single ended output (rarely used for power output)
B: push-pull configuration (most amps are this type)
AB: a combination of both to reduce crossover distortion
All of the above are not horribly efficient and can create quite some heat, they are still popular for their ability to produce great sound.
D: pretty much a big PWM with a few filters. They are highly efficient and create very little heat. Not very popular amongst people who look for great accuracy in reproduction, but often used in battery powered products or high-power stage equipment.
For this kind of thing , type D is certainly the best choice.
Getting the magnetic fields from the wrist to the finger is another task. I'd recommend to place the coil as close to the magnet as somehow possible. If not, at least guide the field to the finger but don't waste it in free space.