Smartphones measure MAGNETISM in 3D?!? | Gaussmeter in your pocket?
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- เผยแพร่เมื่อ 26 ก.ย. 2024
- Modern smartphones are packed with sensors. Many will even measure magnetism in three dimensions. Can the cellphone in our pockets be used as a state-of-the-art 3-axis gaussmeter? Let's find out!
Maps of Earth's magnetic field: www.ncei.noaa....
The F71 Teslameter donated earlier by Lake Shore Cryotronics:
www.lakeshore....
50 mm sphere magnets and one of the 150x50 mm disc magnets donated earlier by www.magnetport...
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#Smartphone #Gaussmeter #Earth
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Let's get me him toh 1 million. He deserves it
Thanks! Wouldn't mind it at all ;) Much more videos to come!
@@brainiac75 I'm so glad you replied to me good sir . I've been watching your your videos since I was in 4th grade , now I'm preparing for my college exams . You're videos were soo much exciting to watch . I've been a huge fan of yours for a long time and I just wanna thank you for your hard work and your uploads . Much love and support from me ❣️
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I didn't even realise I wasn't subscribed 😬 instead of all the stupid shorts and adverts TH-cam should have subscription recommendations
@@adwitiyasharma1121Average Brainiac75 enjoyer 🗿
The magnetometer was actually way more accurate than I would've expected. No it's not a lab tool, but it's still pretty far and away from cheap compasses and the like.
Yes, for fields up to 0.005 T it is astonishing. This video got long enough as is, but if people are interested I may test its accuracy at higher levels than the Earth's magnetic field. For example in a field around 4000 microtesla. Will it still be accurate compared to a "real" gaussmeter? Thanks for the early watch!
@@brainiac75 I think that would be interesting. I can imagine this type of sensor could be used in robots or other devices that would have motors/magnets in close proximity, so I wonder how it would handle being near a noisy source. Would the readings just get swamped out, or maybe the sensor can filter out high frequency noise since the Earth's field isn't changing that much?
Thanks for the interesting content :)
A compass doesn't measure field strength, only direction.
The company I work for makes such sensors. Not only for phones like thisone, but also for automotive applications
@@MikePerremanSuch a magnetometer is a part of the GPS module on drones and there is exactly this issue. It is affected by motors and the power cables, also radio transmitters. So to have the best results it needs to be mounted as far away from those devices as possible, usually on the high stands...
This is like having a 6th sense of measurement. Thank you for all you d. Especially with the attention to giving examples with the different options available.
Glad you like it! It is amazing to me that 3-axis magnetometers are now so cheap to make that millions of us are walking around with one in the pocket. Technology is still evolving - fast...
@@brainiac75 I agree with Sitarow. Thank you so much for this very educational video.
Patrons, thank you all also, for supporting this great cause.
It's a great video.
I do a lot of repair work. To avoid hitting a wire or iron while drilling through walls, my phone has metal detector software.
One day I wanted to use this metal detector while having a picnic in the country. A minute later, I found a bronze arrowhead with a triangular cross section, at least 1000 years old. It was an incredible thing. Finding the arrowhead was maybe a one in a million chance. Detected 3-4 centimeters deep from the surface.
_(I live in Izmir-Turkiye. In the geography of Turkiye, many civilizations have been established for thousands of years. In other words, the probability of finding a man-made metal object thousands of years old is higher than in other countries.)_
İlginç bir hikaye. Ok ucu hala duruyor mu?
@@cruslanoyuntutkunu4541 evet
@@cruslanoyuntutkunu4541 Hala ellerinde olup olmadığını da bilmek isterim! Belki TH-cam'da bir videosu bile vardır? Görmek için oldukça eğlenceli bir şey olurdu.
Did you make photos or videos of that great find? Also what did you do with it? Keep it or donate it to a museeum? I wish i would find something this great. As im from north-west germany, i would most likely almost only find old roman stuff and the chance to find stuff that homo-neanderthalensis made etc is pretty slim i'd guess-
3:46 I absolutely expected this and I love this
What fun!
I think I found the app during your video and was sitting here waggling my phone about on the desk with you!
Pixel 7 - Worked great!
which app is it? i have a pixel 6 pro so id like to test it out too!
Sauce .
The app is Physics Toolbox Sensor Suite by Vieyra Software. I use the free version.
This makes sense as it can be used to orient your phone's screen easier than accelerometers can.
no accelerometers are independent of earths magnetic field,and way more precise. Them combined with a gyroscope,that is also in almoust any phone can measure the angle you are holding your phone in very precise.
The magnetic field sensor is only as a compass, for the map on your phone to orient itselve.
accelerometers in phones are also 3D. They are so precise, that they can detect it,if you only touch the table, your phone is laying on with your pinky finger, at least if the table isnt out of stone.
@@neutronenstern. Sorry, should've put more context to avoid the _but but but_ comments...
Accelerometers measure movement but have no idea what's up or down. This tech could be used to orient a phone differently, giving realtime data on the phones position in an x, y ,z environment.
@@Benson_aka_devils_advocate_88 Actually, the accelerometer also measures the Earth's gravity as acceleration, so it always "knows" where down is. If you drop your phone, it will measure zero while it's on free fall.
@@PMX LoL see this is what happens when I think I know something! You are right they are able to feel the downward pull of gravity. Wasn't aware they were that sensitive in the phones!
@@Benson_aka_devils_advocate_88 If the magnetic field sensor was used to orient the screen, some people in the other half of the earth may have upside down apps, not ideal
I am part involved with the manufacture of the World Magnetic Modlel am always amazed how much effort they go into to get the accuracy of the land data to generate the magnetic model and with satellite data to generate the WMM. This is only accurate to +/- 1 degree accuracy over the 5 years. An update had to be done in 2014 as the north pole was moving faster than modelled. The other thing that always fascinates me is how stationary the south pole is compared with relative movement of the north pole. I asked them last time if the Cern particle collider on full power would affect ground measurement but he couldn't answer that at the time. They are tempted to use magnetic data from mobile phone as infill data as land stations are expensive to man and more problematical due to human interference but if they can sub mobile phone data it will be a bonus but cleaning this extra data may be too much to benefit the WMM.
that's actually so cool
Have you tried the Magna-AR tool in Physics Toolbox Suite? It keeps track of where your phone is in space and you can add 3d arrows in AR by tapping on the screen or enabling the button on the bottom right. Over time, as you move your phone around, you should be able to map the magnetic field in an area. I'm thinking this would be pretty interesting to do with one of your larger magnets?
This is quite interesting, I cannot see what future portable devices, and by extension smartphones, can do with their sensors for other practical applications!
hey! what app are you using in this video and the lumens one? I could really use that for some things i needed to do haha
In this video, I use the app Physics Toolbox Sensor Suite by Vieyra Software. The lumens one is Lux Light Meter Photometer PRO. And the sound level one is Decibel X - Pro Sound Meter. All mine are free versions.
Another free "multitool" app that might be worth looking into is Phyphox
@@brainiac75 thank you!!! i have some flashlights that i wanted the (rough) brightness of and that might just do the trick!
Honestly just want to say you are an OG youtuber I really appreciate your videos and enjoy them everytime. Good stuff my guy thanks for the years of work
The 3D mag graph in the shipping firmware on the Adafruit Clue dev board was so fascinating to mess around with and explore... That said I've used mags in IMUs for orientation tracking for a whole so I know how flaky and drifting they can be.
Right when i see the notification i come watch the amazing videos! These videos are so good!
yes
Hi Ronsku! Glad you still like my videos and comment after all these years ;) More to come!
"I am not sure which of the two holes I am probing here." Someone please tell me that I am not the only one that got a smile from that.
So I've did a measurement where I live like you did, and apparently, I'm 5 degrees shy of living right above a magnetic pole, as the inclination I've got from the app reads 84.5 degrees. The 3D compass function supports that as well, and it's actually pretty cool! Never knew I lived almost on top of a massive north pole of a planetary sized magnet! You learn something new every day!
What software is the one he and you used? I am curios to see my data. Thanks.
I remember finding out about this back in 2010-2011 on my first smartphone HTC evo. There was an app called tricorder that displayed most of the phone's sensors as graphs, and some information available online like the activity of the sun. I later found out it was a reference to a fictional device in Startreck by the same name. I thought it was so cool that you could see the audio spectrum and frequencies along with the phone's accelerometer so you can see forces while driving or in an elevator. There was one labeled mag that I wasn't quite sure about, but I figured it had to do with magnetism because the graph would change when I put steel near the phone.
Really interesting to see. I wish that these sensors were more powerful, it would really be cool to have a truly all-in-one pocket multitool that actually does everything it can do, instead of having most of its sensors gimped due to most people not needing it.
Yep, I also wish the magnetic sensors in phones could cope with stronger magnetic fields. Would be awesome! Though, some parts of a phone may not like being on a high-powered neodymium magnets... Thanks for the early watch!
@@brainiac75 also matter of size and consumption. With so much going on adding even a little bit for each sensor is significant in the end. And if IR cameras, for example, are used less than an hour per day even by people who need them everyday, those sensors work all the time...
And then costs - remember, each cent saved even on $1500 phone is a bonus for a manager and a lead engineer)
But still multitool smartphone sounds nice, though i wouldn't buy it - for casual use current censors more than enough. I even collected some data of vibrations acceleration of a train for evaluating one project possibility)
I remember some of your old videos, and just got nostalgic. Keep doing what you're doing, it's brilliant.
as for me, i think those little 1mm magnets are cute, but dangerous at the same time, though
you can easily lost or shatter them, that magnetic shatters can get into your body, that doesn't sound healthy, etc.
It's so cool that you featured that application. Great video. Thanks.
"it's just not the same experience when the probe is too big"
"I'm not even sure which of the two holes I'm probing here!"
"the position of the sensitive spot is not clear, I cannot find any information on the location of the sensor for this model and will just have to figure it out myself."
bro, same
4:36 was adorable lol -- I always like the bits of humor you throw in your videos c:
"I'm not even sure which of the two holes I'm probing here"...
Archer: phrasing! 😂😂😂..
Imded😂😂
It's no surprise to see a video about this especially when most people recently and for a while now have began realizing that compasses are limited to what they point because they're made in a horizontal way but magnetism and electricity flows in all directions you don't need a cell phone you can learn to use a magnetic sphere and water
The music stopping when you tried to poke the phone in the magnetizer was great.
Use the "hall ic" option in the test screen. It shows all magnet sensors and their location.
Technically your own measurements might be more accurate than those of the official map since you took that at a particular point in space and time while the official maps are not only out of date before they're even made public but most likely measure things at a slightly less granular level than you just did.
The iOS version of the app appears to be Physics Toolbox Sensor Suite by Chrystian Vieyra.
Nice video ! i also have that exact app. I also recently discovered about the sensor. Keep up the great work !
What is the name of the app?
@@cemmy410 The app was called: Physics Toolbox Sensor Suite (Android)
. There's a pro edition but the free version that i also use gives you all the infos like in his video.
3:55 Sometimes I'm not sure either
That's actually how the original Google Cardboard trigger button was done. They put a magnet on the right side of the cardboard and pulling the magnet changes the magnetic field and phone detects the change and reacts as a button.
This is some seriously nerdy and awesome data.
phones are insane tools. some of them even have night vision. try looking around utilizing the "time of flight" sensor. some phone allows third party apps to access them. or LIDAR is also very amazing
Yes, the more I look into smartphones and their sensors, the more I understand the high price for these devices. A lot of work and research are put into them... I may have to test more of the sensors and utilize my own phone for much more applications :) Thanks for the early watch!
@@brainiac75 just checked your other video from the audio app. and ran that same app on my iphone. it can measure as high as tone generator allows me to go. 20.154 hz playing. detected 20.154 hz in B weighting. impressive! thanks for the app suggestion too :P needed a Db meter for a subwoofer
Wow! Thanks for that :🙂 I literally went and downloaded that app in mid video (sorry 😉) Its a fascinating app and it has many other great feathers. Oh and I did of course continue on watching to the end and glad I did because I didn't notice the 3D compass. Thanks! An awesome and truly interesting video
4:33 "AWWW it's so CUTE"
Holy shit the phone vs the demagnetizer had me in stitches
It'd be neat to have a program that ignores the phone's GPS and guesses your approximate possible location(s) on the globe based only on the magnetism sensor, accelerometers, and the magnetic map.
my phone doesn't even have FM-radio. this is a good way to see what's inside the phone before you buy it though. because most of the time such tiny details aren't mentioned anywhere.
Weird, I was looking for a compass app and while previewing a few, I noticed 1 was pointing the wrong way. I don't know if it was my phone, i tried turning my phone sideways and it still did it.
The software you used is also awesome: 'Physics toolbox sensor suite (pro)' by Rebecca Vieyra the science physics part and Chrystian Vieyra the programming and sensor part has so many options for reading out the onboard sensors and recording it into excel or whatever it's just cool. The paid pro version has some extra features but I mainly paid for respect for their work.
I never have been able to find a phone with a barometer.. anyone else any luck?
I love that software, and playing with it while walking through the city, you'd be amazed
What and what not messes with the natural magnetic field for example.
I have such magnetometer also as part of the GPS module on my quadrocopter drone but there or is more challenging as it needs to be mounted away from all sources of the electromagnetic field, like motors, power cables, radio transmitters which is not easy on the body of the drone 😊
In Australia you can buy a world map with south on the top and the writing too.
4:32 heh heh. I like how you sounded like.
I have an app called sensors multi tool, and it does lumen's, it does lux, light spectrum, it does shock, it does Compass, All kinds of crazy stuff, and I use it all the time. It's amazing what these little handheld super computers can do.
This app is also available on iPhones and is seriously powerful and fun to use
when i saw the title and title card it took me a sec but i quickly understood why and am now only watching for more boredom removing entertainment. and yeah, the video confirmed it for me.
Def going to try this! I have the same phone and model!!
I enjoyed watching this video.
years ago i became able to feel magnets (still can but i have avoided them to desensitize myself because it’s directional aches and pain), and the phone i had at the time had only one, so it was basically just a confirmation that something nearby was magnetic, i was far more able to tell what and where and at far longer away. but it was a great tool to have to not feel like i was going crazy lol, and i think more useful than using a gps compass to see how well i could align myself to earth’s field since there is some deviation.
general compass always show north. Never bends arrow down, however if put magnet 🧲 below general compass it will bend arrow down.
I use a refrigeration tool from danfoss to check for energised solinoid valves. It uses the electro magnetic field I think.
Smartphones are basically Star Trek tricorders at this point. The CAT line of phones includes FLIR built-in.
That teeny cube magnet really is cute. 😭
Cool demonstration. Makes me wonder if you have enough kit to demonstrate magnetic ranging like it is used in Steam Assist Gravity Drain (SAGD) oil well drilling. According to the MWD hands customer were always impressed when shown a demonstration in the shop. Rebar in the floor and surround by structural steel, the down hole tools could give the distance between the magnetic coil and sensor down to the centimetre with an error less than the hole size, 222mm.
I found out this year that phones could be used to detect magnetic fields when I wanted to put up my first shelves. I was very surprised that it hadn’t been made wider or common knowledge. A quick video like this saved me money and time on locating a ‘stud finder’.
I live right in the South Atlantic magnetic anomaly. Navigation is beyond frustrating because the GPS app never knows where I'm headed
I used the same app on my iphone and discovered where the sleep sensor maget was in a laptop and also overloaded the sensor. I also held my phone up to a laptop charger and could see the current pulses.
It's surprising how this channel doesn't have 1 million subs yet... I follow it for so long, maybe it hasn't reached it bc youtube doesn't value real science content (and yeah, science is dangerous most of the times). Still, great content as always.
Agree, not a precise tool.
But being handheld, battery powered, and low resolution could be useful in magnetic related professions as a general sensor, to localise strong fields.
I want to see what it does around electrical & electronics; that could be a power sensor we all carry 24/7
For hobbyists..... How does it react around different types of magnetism/ferrous materials, can we use it to figure out material types?
Can we set up a test regimen for magnets where you place the magnet, move the phone within a defined range, then calculate a field strength?
"I'm not even sure which two holes I'm probing."😂😂😂
69 degrees, NICE! Also worth noting is that the magnetic poles do drift over time.
I heard that smartphones were designed with their magnetometers and accelerometers to be optimally used while being held vertical, because that’s how engineers thought most users would orient their phones while driving or walking and using GPS apps. Does your experiment confirm this? Or is it dependent on your location? Or does it not really matter at all?
That's awesome! What a great app!
Thanks!
now i wonder how easy it might be to build a small usb c attachment with a more professional sensor on it.
It's cool that your tesla meter and your phone both run Android
9:15 my favorite angle
4:33 the one time he breaks character to say that, and at 7:24 that TMeater can be considered a phone becuase it’s running android, with a little modification to it, you can install a phone app onto it
Awsome Info
It's still insane how much they have crammed into modern phones...
I remember my mom having a brick phone...
Can you please let us know which app you're using? There are many sensor apps on the marketplace but I've been unable to find the one you're using..
Always a great day when you upload a new video.
It is to me too - after working hard on a video for a month, it is a relief to finally release it :D
Have you considered building a ferrocell to view magnetic fields? You can build one yourself with two panes of glass, ferrofluid, mineral oil/WD-40 (to allow the ferrofluid particles to move around), and LEDs.
The earth magnetic field has been moving around lately, the numbers from 2019 are too old, and maybe the 2023 numbers you get from phone and Teslameter are *closer* to reality now. This is speculative, I actually do not know in what direction the difference is, just that I'd not trust 2019 numbers to be representative of 2023.
0:39 Bro the lamp, HOW is that skewed without falling?
"Ah, is it so cute!"
What device to measure magnetic field on certain place ???,on the mountain for example
One Day ago, we played with my son with micro:bit magnetometer same way ...😂 and overkilled sensor- built in whith neodymum magnet near the board 😅😮. And now YOU posted video ABOUT same case ... what a be life we live, we live AWEWESOME 🎉❤ (sorry for my english T9😇)
I think the max limit of 5000uT is really dependend on the phone i have an old huawei p9 that was able to measure up to teslas a remeber putting a magnet from hardrive next to it and a was able to determine that the sensor was near the top of the phone and right next to phone it measured around 1-5 tesla i can try to repeat the test and provide some screens if somebody wanted
what are the apps used in this video?
Is it good for people that want to do simple tests with weak magnets that can't afford like any special tools at all
I assume it would be good for that
in the southern hemisphere... my 3D compass pointing up. not down.
Hi, how did you get the 3d compass option in the app, i just installed the app. But not seeing the option for the 3d compass.
The earths magnetic field is pretty accurate on my phone too (ak0991x Magnetometer Non-wakeup sensor)
I have the same app that you have and you can switch units from microT to Gauss like on the lab measuring device
So you are testing the 3 axis gyro scope I think. Which uses 3 magnets to work
My starfield watch comes with a 3 axis magnetometer. maybe you should take a look at one
Can you shield the sensor some how to allow you to be able to use it with stronger magnets?
3:50 Familiar problem 😂
Great video mate! I reckon you need to do a collab with JerryRigEvwrything and get him to send you one of the sensors from the next phone he tears down!
3:55 We've all been there 😆
3:55 sounds a lot like my first time.
09:13 Nice
Nothing better than an good old Danish accent 😂 ❤ 🇩🇰
"not the same experience when the probe is too big"
*the probe is the phone, including the sensor.*
Thanks I was happy to wash this nice video about magnet sensor in a smartphone. I will keep washing your videos as usual. Wash you soon :)
Brainiac which phone is that? Samsung?
Can you share app name ? Is it on F-droid store ?
The app I use is a free version of Physics Toolbox Sensor Suite. Should be on most stores but haven't looked into it. Good luck with it!
the mag sensor could in theory be used as a location device.
not as in "tell me exactly where that phone is"
But more as in a 2F way, is the phone near a X field? if yes then it's probably close to where it's supposed to be.
Magnets are small enough and powerful enough that you could easily tune a secret place to be just about 10 to -10% of earth field and have a very non intrusive way to do stuff on the phone.
did the phone see 101 before wifi?, or did it see wifi before 010?
Obviously anybody can buy a magnet and clone the wifi ssid, but getting those tesla's right is not as trivial as getting Google and Apple to snitch.