I tried Future Technology! (that you can use TODAY)
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Date: 2024-07-15
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Comments and reviews: 20
greatscott
Dear Scott,
I am a physician, and I noticed that the electrocardiogram displayed in your video is full of interference and noise. The isoelectric line does not remain stable at 0 volts, likely due to muscle contractions in your arms during the test. As a result, you are simultaneously recording an electromyogram along with the electrocardiogram. Despite this, it is possible to distinguish the spike of cardiac contraction from the noise.
Additionally, if you are otherwise healthy (besides your love for complex electronic circuits, you should not have a 92% arterial oxygen saturation at rest. Therefore, the oximeter sensor probably needs calibration.
This is my first time commenting, but I would like to express my congratulations on all your videos. Each one is an educational gift to those of us who dabble in electronics as a hobby. Please continue your high-quality work, and it would be my pleasure to assist as a doctor in any application related to my field.
Kind regards,
Dimitrios
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Dear Scott,
I am a physician, and I noticed that the electrocardiogram displayed in your video is full of interference and noise. The isoelectric line does not remain stable at 0 volts, likely due to muscle contractions in your arms during the test. As a result, you are simultaneously recording an electromyogram along with the electrocardiogram. Despite this, it is possible to distinguish the spike of cardiac contraction from the noise.
Additionally, if you are otherwise healthy (besides your love for complex electronic circuits, you should not have a 92% arterial oxygen saturation at rest. Therefore, the oximeter sensor probably needs calibration.
This is my first time commenting, but I would like to express my congratulations on all your videos. Each one is an educational gift to those of us who dabble in electronics as a hobby. Please continue your high-quality work, and it would be my pleasure to assist as a doctor in any application related to my field.
Kind regards,
Dimitrios
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connecticutaggie
I am an Electrical Engineer working in the Medical Devices field and I have designed EKG machines before. I agree with what the others said that what you have likely seeing is muscle noise. That is what an EKG system is designed to detect since the heart is just a big muscle. The challenge with using EKG from just a single pair of fingers is that there are a lot of muscles that are much closer than your heart That is why EKG system measure across the body. There single limb heart rate sensors typically use pulse oximetry. They use light to detect the cyclic change in oxygen levels that are caused by your heartbeat. They often do this by comparing the transmission or reflection of blue and red light. I will have to check out the chip it uses. I wonder how cheap I could make an EKG system now. There are some possible applications for this if they could be cheap.
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I am an Electrical Engineer working in the Medical Devices field and I have designed EKG machines before. I agree with what the others said that what you have likely seeing is muscle noise. That is what an EKG system is designed to detect since the heart is just a big muscle. The challenge with using EKG from just a single pair of fingers is that there are a lot of muscles that are much closer than your heart That is why EKG system measure across the body. There single limb heart rate sensors typically use pulse oximetry. They use light to detect the cyclic change in oxygen levels that are caused by your heartbeat. They often do this by comparing the transmission or reflection of blue and red light. I will have to check out the chip it uses. I wonder how cheap I could make an EKG system now. There are some possible applications for this if they could be cheap.
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Maxjoker98
Hey Scott, I have a Card10 badgefrom the CCCamp 2019(an electronics dev board given out at conferences, which has an ECG sensor as well, and the trick to taking good measurements using these tiny devices is calibration and being very still. The calibration(for what I guess are filters) on (at least my) devboard is handled by the front-end chip automatically, and takes a few seconds(up to 30, but you can clearly see when the data becomes filtered. Maybe you'll even get some extra parsed data then. Any type of movement will probably give you a noise spike in the data and might interrupt calibration, so try to remain still. And good contact also helps, my badge needed to be pressed quite firmly to get a good reading. You can identify a good reading mostly by it looking like one of those TV heart monitors that go beep-beep(You know what I mean, right: P.
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Hey Scott, I have a Card10 badgefrom the CCCamp 2019(an electronics dev board given out at conferences, which has an ECG sensor as well, and the trick to taking good measurements using these tiny devices is calibration and being very still. The calibration(for what I guess are filters) on (at least my) devboard is handled by the front-end chip automatically, and takes a few seconds(up to 30, but you can clearly see when the data becomes filtered. Maybe you'll even get some extra parsed data then. Any type of movement will probably give you a noise spike in the data and might interrupt calibration, so try to remain still. And good contact also helps, my badge needed to be pressed quite firmly to get a good reading. You can identify a good reading mostly by it looking like one of those TV heart monitors that go beep-beep(You know what I mean, right: P.
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polishfuze1934
As a person who works with ECG signals (mostly writing code that processes signals from wearable ECG recorders, the last demo showed basically a bunch of noise and almost nothing of substance. I saw a comment saying that You should add other electrodes and I agree because this signal is awfully reminiscent of what happens when one of the electrodes gets disconnected when using a virtual ground for ECG.
For people who are more interested in the details, You can somewhat make out the R peak in the data but the T wave is so large (greater than R) that it is impossible due to heart physiology, T wave is the relaxation of the heart muscle and it is usually about 1/3rd of the height of R, and the P wave is also nonexistent which also should be impossible because that's the signal that starts the muscles moving in your heart.
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As a person who works with ECG signals (mostly writing code that processes signals from wearable ECG recorders, the last demo showed basically a bunch of noise and almost nothing of substance. I saw a comment saying that You should add other electrodes and I agree because this signal is awfully reminiscent of what happens when one of the electrodes gets disconnected when using a virtual ground for ECG.
For people who are more interested in the details, You can somewhat make out the R peak in the data but the T wave is so large (greater than R) that it is impossible due to heart physiology, T wave is the relaxation of the heart muscle and it is usually about 1/3rd of the height of R, and the P wave is also nonexistent which also should be impossible because that's the signal that starts the muscles moving in your heart.
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sdlion7287
Regarding EDA, usually, the signal is filtered and processed to detect rate of changes. In conjunction with other signals (like ECG) it becomes a good indicator of changes in emotions, so smartwatches use it to detect stress, unrest, etc. As far as I have read, the main issue is that the patterns are highly individual-dependent. So currently smartwatches/phones train a machine learning model with your data for about two weeks (inviting you to also label events, i. e. indicate how you were feeling in certain identified events, so they can eventually identify these events automatically. I guess this is the reason you don't see any useful data in the DevKit, it would have to implement a detection technology and then train it with a bunch of data first.
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Regarding EDA, usually, the signal is filtered and processed to detect rate of changes. In conjunction with other signals (like ECG) it becomes a good indicator of changes in emotions, so smartwatches use it to detect stress, unrest, etc. As far as I have read, the main issue is that the patterns are highly individual-dependent. So currently smartwatches/phones train a machine learning model with your data for about two weeks (inviting you to also label events, i. e. indicate how you were feeling in certain identified events, so they can eventually identify these events automatically. I guess this is the reason you don't see any useful data in the DevKit, it would have to implement a detection technology and then train it with a bunch of data first.
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travelingduo7523
The ECG tracing does not resemble an actual ECG. I think that the problem is that the board doesn’t have any filters to eliminate all the noise. Try applying a band pass filter with a low pass 150 Hz and a high pass 0. 5Hz. Additionally, you want to eliminate the power interference by applying a notch filter and blocking the frequency of your mains power (50Hz in Europe, 60Hz in USA.
That should clear the noise and leave the normal ECG tracing showing the P-QRS-T waves.
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The ECG tracing does not resemble an actual ECG. I think that the problem is that the board doesn’t have any filters to eliminate all the noise. Try applying a band pass filter with a low pass 150 Hz and a high pass 0. 5Hz. Additionally, you want to eliminate the power interference by applying a notch filter and blocking the frequency of your mains power (50Hz in Europe, 60Hz in USA.
That should clear the noise and leave the normal ECG tracing showing the P-QRS-T waves.
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sutfuf6756
IMHO having haptic feed back through the steering wheel would be a bad idea. I like the fact that I can feel the road and how the front drive train is performing and pick up on new vibrations and the like; these can be an early indicator of a mechanical fault or hitting something when revering/parking/etc. Adding external vibrations to the steering wheel could potentially mask an issue! :-. I'll stick with the beeps.
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IMHO having haptic feed back through the steering wheel would be a bad idea. I like the fact that I can feel the road and how the front drive train is performing and pick up on new vibrations and the like; these can be an early indicator of a mechanical fault or hitting something when revering/parking/etc. Adding external vibrations to the steering wheel could potentially mask an issue! :-. I'll stick with the beeps.
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dempa3
Interesting video! The haptic device is quite intriguing. On the ECG I can only say that it seems that one can descern the electrical depolarization of the ventricles, so one could get info your heart rate, and if it is a regular or irregular rhythm. But more than that isn't discernable with this setup. Regular diagnostic ECG uses 12 leads, and a basic monitoring ECG uses at least 3.
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Interesting video! The haptic device is quite intriguing. On the ECG I can only say that it seems that one can descern the electrical depolarization of the ventricles, so one could get info your heart rate, and if it is a regular or irregular rhythm. But more than that isn't discernable with this setup. Regular diagnostic ECG uses 12 leads, and a basic monitoring ECG uses at least 3.
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supersmiler
Hey Scott,
The ECG signals you are measuring are still full of noise. You should be able to clearly see your heartbeat in the signal. Maybe you have not connected everything right or did not setup the right filtering but if you want to try a reliable all in one solution that i know works try the MAXREFDES100. Easy to use and very accurate. Thanks for your amazing videos!
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Hey Scott,
The ECG signals you are measuring are still full of noise. You should be able to clearly see your heartbeat in the signal. Maybe you have not connected everything right or did not setup the right filtering but if you want to try a reliable all in one solution that i know works try the MAXREFDES100. Easy to use and very accurate. Thanks for your amazing videos!
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technodaz
I have two taptic engines from old iphones in my bikes handlebars one either side that basically give me a reminder after 20 seconds on time that i've left them on or dam these traffic lights are slow. I see too many bikers around leaving indicators on as who has time to look down notice a tiny flashing light, it should be a standard feature, I loved haptic feedback!
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I have two taptic engines from old iphones in my bikes handlebars one either side that basically give me a reminder after 20 seconds on time that i've left them on or dam these traffic lights are slow. I see too many bikers around leaving indicators on as who has time to look down notice a tiny flashing light, it should be a standard feature, I loved haptic feedback!
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Ryan_Tidwell
Another great video. I don't agree with putting haptic devices in steering wheels. The first thing I do when I get a phone or play on a playstation is turn off the haptic feedback. I'm not sure what I hate about it but I certainly do not like it. If it was in my steering wheel it would drive me completely crazy!
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Another great video. I don't agree with putting haptic devices in steering wheels. The first thing I do when I get a phone or play on a playstation is turn off the haptic feedback. I'm not sure what I hate about it but I certainly do not like it. If it was in my steering wheel it would drive me completely crazy!
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jerkwagon
The macbook pros have been using these for a long time, almost 8 years. the touchpad is a solid state piece, but it has haptic feedback to simulate pressing a button, its quite wild, really feels like you have pressed down on something, and they also have another deeper press that feels cool. great video!
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The macbook pros have been using these for a long time, almost 8 years. the touchpad is a solid state piece, but it has haptic feedback to simulate pressing a button, its quite wild, really feels like you have pressed down on something, and they also have another deeper press that feels cool. great video!
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Hotpack7279
Please consider this in the future. It is horrible to listen to. An O is a Letter. And a 0 is a Number. In almost every serious conversation, in best case they stop talking to you, or in worst case they even throw you out of the room. In the military sector, for example, an absolute no-go.
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Please consider this in the future. It is horrible to listen to. An O is a Letter. And a 0 is a Number. In almost every serious conversation, in best case they stop talking to you, or in worst case they even throw you out of the room. In the military sector, for example, an absolute no-go.
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p-196
my first experience with habtic feedback that wasnt a standard rumble motor was on the Steam Controller. when i tested it with the old steam big picture web browser and scrolled trough a page, the controller gave me a habtic feedback of a scroll wheel with a hard collision at the end of the page.
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my first experience with habtic feedback that wasnt a standard rumble motor was on the Steam Controller. when i tested it with the old steam big picture web browser and scrolled trough a page, the controller gave me a habtic feedback of a scroll wheel with a hard collision at the end of the page.
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Skiman__
11: 53 did I see osram there I wonder what they’re doing in a medical application product lol. Most people generally are aware of them only for being the oem for various car bulbs for majority of the car makers around the world. (I think in us they’re branded as sylvania)
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11: 53 did I see osram there I wonder what they’re doing in a medical application product lol. Most people generally are aware of them only for being the oem for various car bulbs for majority of the car makers around the world. (I think in us they’re branded as sylvania)
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kelrune
3: 44 on my car my steering wheel has haptic feed back for when your crossing the line when you start slipping out of the lane. i love it it does also do it depending on the side of the lane I am going into. left is left of the steering wheel and well so on. it works well.
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3: 44 on my car my steering wheel has haptic feed back for when your crossing the line when you start slipping out of the lane. i love it it does also do it depending on the side of the lane I am going into. left is left of the steering wheel and well so on. it works well.
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Ryeera
Heya! Love the video, I'm definitely getting that Body Sensor board as well, that's pretty awesome!
Just gonna say tho: If your SpO2 is actually only 90%, you should get that checked out. Normal SpO2 is 95% and above and lower could indicate a mild respiratory desease.
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Heya! Love the video, I'm definitely getting that Body Sensor board as well, that's pretty awesome!
Just gonna say tho: If your SpO2 is actually only 90%, you should get that checked out. Normal SpO2 is 95% and above and lower could indicate a mild respiratory desease.
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ChristieNel
Very educational. I've worked with piezo actuators - they can be tricky to drive. I think it's more sensible to use coils. They're cheaper to make and easier to drive and read. I've used coils to make a processor controlled bass instrument in a small box.
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Very educational. I've worked with piezo actuators - they can be tricky to drive. I think it's more sensible to use coils. They're cheaper to make and easier to drive and read. I've used coils to make a processor controlled bass instrument in a small box.
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MCsCreations
Really interesting stuff indeed! Thanks, dude!
The solar board would be really interesting for a garden lamp. But it would definitely need higher voltage.
Anyway, stay safe there with your family!
BTW, brush robot build with that motor! Please!
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Really interesting stuff indeed! Thanks, dude!
The solar board would be really interesting for a garden lamp. But it would definitely need higher voltage.
Anyway, stay safe there with your family!
BTW, brush robot build with that motor! Please!
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TewaAya
I've commented this on the hacksmith before but I'll say it again, the haptic motor Is perfect with a near distance sensor for alerting against creeps.
Especially in the most precarious of event situations such as e3 or any other compact conventions
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I've commented this on the hacksmith before but I'll say it again, the haptic motor Is perfect with a near distance sensor for alerting against creeps.
Especially in the most precarious of event situations such as e3 or any other compact conventions
reply
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