Archived threads in /diy/ - Do It yourself - 528. page

looks like gravel
wtf, did some one dropped that thing on the ground during potting (re-potting after repair?!? its not serviceable)? i doubt, even high speed, projected gravel would embed itself so neatly in that
really weird indeed

I've honestly never seen anything like that
Not that I'm really in the habit of buggering around with ignition systems that often, but I've not seen it in anything else electronic!

>>999464
Is the stuff that looks like gravel actually gravel? Or is it just more of the rubbery stuff?

I would guess it's just more of the potting compound and it just didn't mix right or maybe it was the bottom of the barrel.

The rubbery junk is potting compound. You pour it on electronics to protect them from vibration and moisture. It also makes them totally not servicable. There's nothing to fix because it's such a pain in the ass to remove.

You need a power supply that-
1. has the right plug for where you are,
2. puts out 12 volts DC, and
3. puts out at least .5 amps. Preferably more. I would say to look for a ~1-amp power supply. It's not going to cost significantly more.

Also if you have not bought the fan already:
....It's been a few years since then, but once I built a nearly-silent PC. You couldn't get everything fanless back then, but most of it was.
The expensive fans didn't really sound any quieter than cheap ones, to be honest.
All the cheap fans were noisy at full-speed, but if you slowed them down to about 1/2 their full speed they were drastically quieter and still kept everything cool enough.

>>999471
What will be the practical difference between running the fan on 0,5A or 1,0A?

Thank you for your response.

>>999430
Why not use an old cell phone charger ? I did that to run 2 fans in my entertainment center

>>998845
> t seconds

Meant 5 sorry

>>998845
>then polarities switched
So you need the output switching between +10v and -2v? 555 pin 3 just switches back and forth from GND and VCC; it has no way to reverse voltage. You could do that by connecting it to an H-bridge, but making a virtual ground would be easier:

You will need a 12v power supply and a 2v power supply. 2V can be made from the 12v using a regulator or divider. Power your 555 with 12v and GND. For the thing you're controlling use 2V as the ground and 12v for VCC. From that thing's perspective the 555's output will be switching between -2v and +10v.

Build a standard astable 555 circuit to get the timing you want.

>>998845
>Can't disclose that part.

Years ago, I had a billion dollar idea that needed a 555 timer but also was too stupid to figure out how to use one. I asked for help and lost everything. Now Facebook is a huge company and I'm still mopping the floor of my local ham radio club. Good on you for being careful.

I was going to call it FacePlace. Bastards.

>>998834
Is this image a picture of expensive shoes getting dunked in paint? I feel as if this is the case, and i cannot understand for the life of me why anyone would buy expensive shoes to begin with. The retarded part isnt putting the shoe in paint, it's buying them.

>>998837
In this instance, solely for the shock value towards the fine young black Americans that buy them.

File: YSIhp2d.jpg (367KB, 1280x1707px) Image search: [Google]

367KB, 1280x1707px

>>998972
Don't forget the fat white kids that cried that day too
>>998834
op is this it? http://www.raleighrestorations.com/product/redoctober/

Where is it located on the car? Also, did you try /o/?
>inb4 /o/ is full of shitposting autists
Sometimes they get lucky.

>>998520
It's coming out from under the seat. I'll try /o/, thanks a lot!

>>998524
>It's coming out from under the seat.

My guesses: Electric seat connector. Or there was an audio amp under the seat.

https://www.youtube.com/watch?v=4OyoWAZEcIE

https://www.youtube.com/watch?v=arbNxONg88c

>>998430
>>998428
fixed the embeded vids

With solar panels + dynamic soaring you can keep flying practically forever.

With dynamic soaring you can potentially turn generate electricity if you use your propeller like a wind turbine.

The best throttle percent will depend on motor, esc, and propeller.

>Learn to thermal, scrub
Failing that
>1.) Voltage (3s, or 4s batteries)
Makes little difference as long as you have the restraint to pull the throttle back on 4s
2.) Propeller (Stay with recommended prop, or is there a more efficient option {decreases x traits for efficiency})
Stick with the recommended range for your motor. Choose a prop from within that range based off the flight envelope of your plane.
3.) Motor brands (any well known companies with higher quality magnets or products)
Meh
4.) Motor kV (which is the most efficient kV for a glider? Higher, lower, medium {800kV large prop vs 1600kV small prop})
Large, slow-turning props are more efficient, especially at low speed (and as seen from the increasing prevalence of big geared folders in F5B and now even F5D, are capable of going very fast as well).
5.) ESC (are there certain types that are more efficient, companies or higher quality brands. Should I use a higher amperage ESC if the weight is the same?)
I can't say I fully understand the differences, but I've seen a good bit of variation in wattage, efficiency and effective kV just from different ESCs. Not sure why it happens, perhaps it's related to motor timing. Now, I've also read that the ESC itself is only a minor source of energy loss (1-5%) but if it's changing the way your motor behaves (and assuming you don't change props or motors accordingly), that CAN have a more significant impact on the efficiency of your propulsion.
>6.) Throttle (What is the best throttle percentage for efficiency)
As little as it takes to fly, period. More for climbs, less for descents. I'm often able to get about twice the "usual" flight time out of many of my models since I prefer not to fly at WOT.
7.) Servo Motors
Minimal draw. Digital servos draw over twice as much as analog for some reason. Don't be stupid with your control surfaces and linkages; the servo will draw more if it constantly has to exert force to hold position.

>>998351
Is modyfying the wing/fuselage an option? Because lift distribution and aspect ratios can be a pretty big deal.

>>998144
inb4 everything, but aluminum foil, glossier side out.

I heard legends about Elvis using it on his bus, tried it myself during a fairly hot summer (I'm not in the desert, but before the climate got all fucked up we'd have a few 100+ days where I am, and humid), and between that and a window unit running maybe a couple of hours a day it was just perfect in my room.

Just one layer will block everything, cheap, reversible, nothing needed but tape for installation.

It does obviously look like shit if you're worried about that, and everyone may think you're crazy or at least joke about it, just like this board will for me suggesting it.

>>998145
>everyone may think you're crazy
I'd have more doubts about the sanity of those choosing to live on Death Valleys Doorstep, desu. OP, here is the news - GTFO bro.

>>998145

It's funny you say that because nowhere online recommended that but I myself thought it might work. The only concern I have is safety. Not sure how, but could it be dangerous by absorbing too much heat or does it do a good job of reflecting heat?

I mean if the tack strip is still in good shape you could.. But why not just replace everything at once and do the job right so you don't have to redo it? But anyways as far as carpet goes, the padding underneath is where a lot of the support actually comes from. I generally don't like the attached pad style myself because for about the same price you can get a foam underlayment. Not that shitty stuff that looks like it's made of recycled cloth, like a solid foam that's made to stand up to years of walking on and not soak spills into your subfloor. As far as the carpet goes, it's mostly up to the style you like. There's def ones that hold up better and won't stain as easy by using a scotch gaurd. The only thing not to let them shill you over is a nylon carpet. I think it's home depot that pops a boner for that stuff. Let me know if you have any more specific questions.

>>998209
Lmao nylon as a material is going to last and be a lot more abrasive resistant then a polyester.. It also doesn't asorb water as readily as polyester. Just saying..

>>998209
>>998212
Shes basically looking for something shag or shag-like. She really loves the plush fuzzy feeling of the carpet she has now. I'll have to feel what nylon vs polyester is like in person

>>997495
trimble my drimble

>>997495
What are your best selling products on the agricultural market and how do you approach potential customers?

>>997495

neat

>Trimble

hey i got a SVeeSix CM3 like 15 years ago for like $10

>>997309
Out of what? How thick? What size?

>>997312
inch long aluminum
and as think as it can be and not bend without a wrench

Probably have to make a machine that stamps them out

I forgot to mention that we're in Southern Maine, to give an idea of the climate. That means full basement, and wild, unpredictable temperature and humidity fluctuations for large chunks of the year.

File: garage.jpg (4MB, 3570x5408px) Image search: [Google]

4MB, 3570x5408px

>>997304
Ask away. I have been building ICF for years. Pic related, a detached garage I built for myself.

>>997308

How important is it to find an experienced crew to work with ICF? Is it something I could possibly handle myself, with minimal building experience?

Also, just curious - why no ICF roof?

>>997136
Nah that was like "oh fuck I don't know what I'm doing" way of holding it.

>>997136
She should have put the foot of the saw on the wood and push it away from her optimally.

Lots of people don't use sawzalls right though.

>>997136
The ergonomics on that thing look absolutely atrocious.

Im guessing the water wouldn't be best quality. Distilling would require lots of power. Pushing water through a membrane isn't very cheap.

Do you mean purify like physically removing contaminants or killing bacteria and other things that will get you sick? If the latter take a clear glass jug and leave it in the sun for 6 hours and the sun will disinfect the water for you.

Where will be your boat? Ocean or lake? If a lake it will be very easy to purify the water. If in the ocean taking salt out is hard.

>>995537
that a piece of railroad track turned into an anvil?

>>995537
I admire your enthusiasm, but paying too much for scrap steel is nothing to grab about.

>>995549
Brag, rather.