Hi /diy/. I'm doing a capstone project next year for my last year of mechanical engineering, and I'm having trouble thinking of what to do, so I was wondering if creative minds such as yourselves could throw some ideas out there.
Here's what I know: mechatronics (microcontrollers and whatnot), cars (very well), machining, PID control, and other basic engineering stuff.
Like really I'd like to make something with a humanitarian purpose or could be turned into a business idea, but if you had an idea like that then you'd be doing it yourself haha.
An actually affordable assistive exoskeleton using 3d printed parts for people who have limited mobility? (Possibly feeding from a wall plug so they can at least walk around their home, unless battery issue can be solved)
A better voice modulator for throat cancer patients that doesn't make them sound like a dalek? (Not sure if that would fall under your area of expertise)
A portable, but still effective jaws of life system (think small enough it could be tossed into a glovebox or doorwell of every car) to avoid waiting for emergency services in a critical situation (potentially dangerous for untrained, possibly include warnings on casing)
Possibly some form of hydraulic "talon" to be mounted underneath a vehicle in case of brake failure in cold and icy weather? Something that senses when the car is still sliding and goes "fuck, time for plan c"?
Let me know if I'm remotely close to the mark or way off, I'll think of more. Have not done anything with mechatronics and am certainly not by any means an expert.
Hey /diy/, need some input on what the best way to handle this situation is.
The connection to my car's battery is really spotty. I've never seen battery terminals like this, and they're rusted so bad that they pop off of the battery leads. Anything I should know before I commit to desperately sawing them off and soldering on a new set?
There's a 3rd small cable coming off of the positive lead too, dunno if that's supposed to be the ground or something unrelated.
>>920295 No to the solder. Like the other anon said, they sell bolt on ones(basically what you have) that you can tie every thing back in on. The extra wire coming of the positive is absolutely not a ground. Ground will be the negative. Don't change any of the wiring unless you have to, run it exactly how it is. That other positive wire probably runs to the back of your alternator.
Some of the new cable ends come with spots to clamp down smaller wires, some do not. If the ones you get do not you'll need some... Comment too long. Click here to view the full text.
>>919638 Coin batteries have very high internal resistance, it's like you've put the100 ohm resistor in series with it. To calculate it short the battery with the ampmeter, then divide the voltage by the current measured.
You're doing the math wrong. Using I=V/R like that gives you the current that would be going through the resistor if it were connected directly across the battery with nothing else in the circuit.
The purpose of an LED series resistor is to produce a voltage drop so the LED gets the recommended voltage. When the LED gets the recommended voltage it will draw the recommended current.
If the LED is 3v 20mA (0.02A) and the supply is 5v then you need the resistor to drop 2v. Vdrop = R / I = 2v/ 0.02A = 100Ω. Putting a 100Ω resistor in series with the LED will... Comment too long. Click here to view the full text.
i am trying to identify this broken SMD Part. It was on the pcb of a fluke 87 IV i got for free because it had suffered falling damage. I already identified a broken smd resistor but i have no clue what this thing could be.
drill a hole in the very center, stick a toothpick in it, tie a string around it and attach the other end to a glass knife, score the glass in a circle. I don't know if this will knock out easily, but you can always get a very small diamond drill bit and cut small holes all the way around the circle, then try to pop it out. Then you can sand the edge smooth. Sounds like a lot of work though.
>>920642 This is a great idea, thank you. And it took forever to find that 2-1/2 inch drill bit on amazon, but I did find it. I think I'll take the expensive and easy route instead of the cheap-but-hard route and buy the bit, lol
What exactly are you asking? What kind of gifts you should give your friend? How the hell should we know? What does your friend like would be a good start. Do they like video games? No? Don't send them a video game. A Gail safe gift would be a blow job, send them one of those.
So my "soon™" father-in-law asked me a weird question. > Can you put rock and glass wool on top of each other? > If so, which goes on top? or bottom?
Of course I can Google - and I did - but I found tutorials, comparisons and stuff like that. But the combination of two? Nope.
> inb4 why use both He said he's got some leftover and he just bought enough rock wool to cover the entire surface. I guess that would imply that the rock wool would go... Comment too long. Click here to view the full text.
- They kinda think that if you put enough insulation on a house, you won't have to pay for the heating. - He read an article about how heat goes away due to the cold ceiling - so he went to the second floor - which was not used, but fully built - and he destroyed all the walls there, etc. He zeroed the second floor in 2 days. - He plans to cover the floor of said second floor with the wool.
So.. enough back story. If you put these two fucks on top of each other, will that... Comment too long. Click here to view the full text.
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