ashinu77

Hey there everyone, thank you for all your replies. Based on availability, I'm going for a brushless DC motor I found for cheap in a workshop near my area. I'll be using the method of giving it low voltage to cap its speed and a mechanism who's name I do not know but it does not allow movement of the chair unless the user actively pushes the joystick forward(or backward). Will be going for dual motor system, powering the two wheels individually. And turning to be achieved by alternate direction of motion of the 2 wheels.
 
In all, speculated cost from start to finish is around 40,000 Indian rupees, or around 550 USD. Which, I think is not bad and something I can afford. So, lets see how it goes. Starting the skeletal fabrication of the chair this weekend, electronics to be the last sprint  Thank you for everything you guys!

Hey there everyone, thank you for all your replies. Based on availability, I'm going for a brushless DC motor I found for cheap in a workshop near my area. I'll be using the method of giving it low voltage to cap its speed and a mechanism who's name I do not know but it does not allow movement of the chair unless the user actively pushes the joystick forward(or backward). Will be going for dual motor system, powering the two wheels individually. And turning to be achieved by alternate direction of motion of the 2 wheels.
 
In all, speculated cost from start to finish is around 40,000 Indian rupees, or around 550 USD. Which, I think is not bad and something I can afford. So, lets see how it goes. Starting the skeletal fabrication of the chair this weekend, electronics to be the last sprint  Thank you for everything you guys!

Hey beautiful people,
 
So I have a friend who suffers from Muscular dystrophy, a disease in which your muscles and bones degenerate over time. He is 28 years old, weighs 90kg and has not stepped out of his apartment house for over 12 years (since his apartment does not have an elevator and his parents are too old to lift him around). If the pandemic has taught me anything, then its that life is short and you need to see the world when you can.
 
He is a beautiful person, tech enthusiast and a heavy gamer and I want to do this for him
 
I want to build him a powered chair and I want your help with what kind of motor I should choose. A normal industrial-grade DC motor (the e-bike motors) won't do because it just is too fast and even if I slow it down with a gear assembly, its low torque makes it dangerous for him to control because of low handling (he has brittle bones too).
 
So I need something with a high torque, like a servo motor, which my friend can control very precisely. Speed is not a goal here. Safe mobility is. But a servo motor is not continuous in its rotation but I would very much like something with as much control as that. So can you people please help me out in choosing an appropriate motor(s)? Experienced members can even tell me its wattage, and other technical specs. I'm a mechanical engineer, I will understand
 
Please note: I am an excellent fabricator (I can definitely build something swanky that supports his weight and still look cool) with intermediate level of expertise when it comes to electronics and control systems using basic computers such as arduino and raspberry pi. So please do not hold back if you have got in-depth ideas.
 
Many might be thinking - there are ready to use power chairs out there, why not go for it? Reason is - we're in Mumbai (India) and they're just not available here. Import duty alone will be 5x the product itself and the pandemic makes nothing easier. Also, there's something fun about DIY projects so there's that too haha (same reason why we love building PCs when you can buy an pre-built Origin or NZXT eh? ).
 
Down the line, after this basic problem is tackled, I plan to slap some RGB underglow and what not on this as well haha, I shall be posting the progress pictures if the community is interested 😇
 
Thanks people :)

Following.
 
I probably can't add anything here, but as a "disabled" person myself I am interested in what you are trying to achieve. This is a really nice thing to do for your friend
 
I love some of the all-terrain wheelchair type vehicles that people have made. I haven't seen it myself, but believe Jerryrigeverything youtuber has built or is building something similar for his wife, so might want to check that out. He is usually pretty good with things like this, and he will possibly say what components are involved in the motor etc.

Hey beautiful people,
 
So I have a friend who suffers from Muscular dystrophy, a disease in which your muscles and bones degenerate over time. He is 28 years old, weighs 90kg and has not stepped out of his apartment house for over 12 years (since his apartment does not have an elevator and his parents are too old to lift him around). If the pandemic has taught me anything, then its that life is short and you need to see the world when you can.
 
He is a beautiful person, tech enthusiast and a heavy gamer and I want to do this for him
 
I want to build him a powered chair and I want your help with what kind of motor I should choose. A normal industrial-grade DC motor (the e-bike motors) won't do because it just is too fast and even if I slow it down with a gear assembly, its low torque makes it dangerous for him to control because of low handling (he has brittle bones too).
 
So I need something with a high torque, like a servo motor, which my friend can control very precisely. Speed is not a goal here. Safe mobility is. But a servo motor is not continuous in its rotation but I would very much like something with as much control as that. So can you people please help me out in choosing an appropriate motor(s)? Experienced members can even tell me its wattage, and other technical specs. I'm a mechanical engineer, I will understand
 
Please note: I am an excellent fabricator (I can definitely build something swanky that supports his weight and still look cool) with intermediate level of expertise when it comes to electronics and control systems using basic computers such as arduino and raspberry pi. So please do not hold back if you have got in-depth ideas.
 
Many might be thinking - there are ready to use power chairs out there, why not go for it? Reason is - we're in Mumbai (India) and they're just not available here. Import duty alone will be 5x the product itself and the pandemic makes nothing easier. Also, there's something fun about DIY projects so there's that too haha (same reason why we love building PCs when you can buy an pre-built Origin or NZXT eh? ).
 
Down the line, after this basic problem is tackled, I plan to slap some RGB underglow and what not on this as well haha, I shall be posting the progress pictures if the community is interested 😇
 
Thanks people :)

Hey beautiful people,
 
So I have a friend who suffers from Muscular dystrophy, a disease in which your muscles and bones degenerate over time. He is 28 years old, weighs 90kg and has not stepped out of his apartment house for over 12 years (since his apartment does not have an elevator and his parents are too old to lift him around). If the pandemic has taught me anything, then its that life is short and you need to see the world when you can.
 
He is a beautiful person, tech enthusiast and a heavy gamer and I want to do this for him
 
I want to build him a powered chair and I want your help with what kind of motor I should choose. A normal industrial-grade DC motor (the e-bike motors) won't do because it just is too fast and even if I slow it down with a gear assembly, its low torque makes it dangerous for him to control because of low handling (he has brittle bones too).
 
So I need something with a high torque, like a servo motor, which my friend can control very precisely. Speed is not a goal here. Safe mobility is. But a servo motor is not continuous in its rotation but I would very much like something with as much control as that. So can you people please help me out in choosing an appropriate motor(s)? Experienced members can even tell me its wattage, and other technical specs. I'm a mechanical engineer, I will understand
 
Please note: I am an excellent fabricator (I can definitely build something swanky that supports his weight and still look cool) with intermediate level of expertise when it comes to electronics and control systems using basic computers such as arduino and raspberry pi. So please do not hold back if you have got in-depth ideas.
 
Many might be thinking - there are ready to use power chairs out there, why not go for it? Reason is - we're in Mumbai (India) and they're just not available here. Import duty alone will be 5x the product itself and the pandemic makes nothing easier. Also, there's something fun about DIY projects so there's that too haha (same reason why we love building PCs when you can buy an pre-built Origin or NZXT eh? ).
 
Down the line, after this basic problem is tackled, I plan to slap some RGB underglow and what not on this as well haha, I shall be posting the progress pictures if the community is interested 😇
 
Thanks people :)

Hey beautiful people,
 
So I have a friend who suffers from Muscular dystrophy, a disease in which your muscles and bones degenerate over time. He is 28 years old, weighs 90kg and has not stepped out of his apartment house for over 12 years (since his apartment does not have an elevator and his parents are too old to lift him around). If the pandemic has taught me anything, then its that life is short and you need to see the world when you can.
 
He is a beautiful person, tech enthusiast and a heavy gamer and I want to do this for him
 
I want to build him a powered chair and I want your help with what kind of motor I should choose. A normal industrial-grade DC motor (the e-bike motors) won't do because it just is too fast and even if I slow it down with a gear assembly, its low torque makes it dangerous for him to control because of low handling (he has brittle bones too).
 
So I need something with a high torque, like a servo motor, which my friend can control very precisely. Speed is not a goal here. Safe mobility is. But a servo motor is not continuous in its rotation but I would very much like something with as much control as that. So can you people please help me out in choosing an appropriate motor(s)? Experienced members can even tell me its wattage, and other technical specs. I'm a mechanical engineer, I will understand
 
Please note: I am an excellent fabricator (I can definitely build something swanky that supports his weight and still look cool) with intermediate level of expertise when it comes to electronics and control systems using basic computers such as arduino and raspberry pi. So please do not hold back if you have got in-depth ideas.
 
Many might be thinking - there are ready to use power chairs out there, why not go for it? Reason is - we're in Mumbai (India) and they're just not available here. Import duty alone will be 5x the product itself and the pandemic makes nothing easier. Also, there's something fun about DIY projects so there's that too haha (same reason why we love building PCs when you can buy an pre-built Origin or NZXT eh? ).
 
Down the line, after this basic problem is tackled, I plan to slap some RGB underglow and what not on this as well haha, I shall be posting the progress pictures if the community is interested 😇
 
Thanks people :)

Hey everybody,
 
Just solved the problem! Thanks for the help anyway. It alternates between CPU and GPU every 2 seconds. And also shows CPU usage all the time at the bottom right of the screen.
 

Yes, it's a basic pelter setup.
Have one of those myself here. It's the same thing many of those mini-refrigerators sold at WalMart are and only worth it if you can keep it cool once temps get down. That's why those units are heavily insulated, otherwise they to would be a waste of power and really are anyway TBH.

It looks like a peltier module, not worth the power consumed. Also this is not good for things that constantly emit heat (unlike a pepsi can that just assumes ambient temperature)

Hey everybody,
 
Just solved the problem! Thanks for the help anyway. It alternates between CPU and GPU every 2 seconds. And also shows CPU usage all the time at the bottom right of the screen.
 

Alot of the replies here seem to be focusing on the wrong point:
 
The thing is, I don't think that you actually need any separate components. It should be possible to, using the same methods that tools like HWMonitor or CPU-Z use, write a program that runs on your computer which collects the data from on board sensors, and then write it to your Arduinos serial port, where you can decode it and display it. This might be, rather difficult, but it's possible.

The only time IMO that external sensors would be absolutely required is if you are trying to catch ambient air temperature, liquid temperature, or liquid flow.

Oh, and when I worked at a computer store back in the 90's if we had a big customer like a business or a school or something we would actually burn the systems in for at least 24 hours before we even delivered them just to make sure there were not any issues. So no, I don't think a 20 hour workload is going to hurt anything, especially at those temps. It isn't going to help the ambient temp of your room though lol.

Everyone? You just have to cut back on your expenses. Living from paycheck to paycheck is for slaves. Like the saying goes, just stop buying shit you don't need with money you don't have to impress people you don't like.

70 degrees is fine.
It's not a MacBook where when you render for 10 minutes the GPU desolders from the board after running at 110°C.
 

I wouldn't say so. Of course lower temps are better for hardware longevity but 70c is really not that bad considering many stock thermal solutions for cpus allow much higher temps than this and the chips are still backed by warranty. 

It's what processor is made for - hard work. Not for idle waiting. So even if lifespan may be shorten, you'll use it fully.

It's a bit on the warm side, if I were you I would buy a good AIO or an air cooler that can keep the thing under 60 celsius. 70 celsius won't hurt it too mutch but it can shorten it's lifespan.