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Archived threads in /diy/ - Do It yourself - 33. page
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previous thread: >>987082

http://pastebin.com/9UgLjyND

>I'm new to electronics, where do I get started?
There are several good books and YouTube channels that are commonly recommended for beginners and those wanting to learn more, many with advanced techniques. The best way to get involved in electronics is just to make stuff. Don't be afraid to get your hands dirty.

>What books are there?

Beginner:
Getting Started in Electronics Forrest Mims III
Make: Electronics Charles Platt
How to Diagnose and Fix Everything Electronic Michael Jay Greier

Intermediate:
All New Electronics Self-Teaching Guide: Kybett, Boysen
Practical Electronics for Inventors: Paul Scherz and Simon Monk

Advanced:
The Art of Electronics by Paul Horowitz

>What YouTube channels are there?
https://www.youtube.com/user/mjlorton
https://www.youtube.com/user/paceworldwide
https://www.youtube.com/user/eevblog
https://www.youtube.com/user/EcProjects
https://www.youtube.com/user/greatscottlab
https://www.youtube.com/user/mikeselectricstuff
https://www.youtube.com/user/AfroTechMods
https://www.youtube.com/user/Photonvids
https://www.youtube.com/user/sdgelectronics
https://www.youtube.com/user/TheSignalPathBlog

>What websites feature electronics projects or ideas?
http://adafruit.com
http://instructables.com/tag/type-id/category-technology/
http://makezine.com/category/electronics/

>Where do I get components and lab equipment from?
digikey.com
jameco.com
sparkfun.com
ramseyelectronics.com
allelectronics.com
futurlec.com
ladyada.net/library/procure/hobbyist.html
mouser.com
alliedelec.com
newark.com
ebay.com

>What circuit sim software do you use?
This mostly comes down to personal preference. These are the most common ones though:
NI Multisim
LTSpice
CircuitLab
iCircuit for Macs

>What software should I use to print circuits?
Circuit Wizard
ExpressPCB
EAGLE
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Anyone else notice /ohm/ has been super sloe lately? Slower than usual.
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>>998973
I gotta wind myself some RF coils.
Should I put the secondary winding next to or ontop of the primary winding?
>>
>>999021
Bifilar winding is better, so the B. It removes self inductance quite well, and in transformers will remove magnetic flux.

If you wanna know more search about bifilar coils, I only just about got the grasp of how they're used.

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First time posting on here and just wanted to know how I can open the door to my Uncle's ancient mini metro.

He says he hasn't got them anymore...
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>>1010012
can you go back to school
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>>1010015
This.

If you can't open the doors of a mini metro then you'll never make it as a car thief.
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>>1010015
What's the matter with you, sweetheart? You didn't have to post, you know?

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Hey /diy/, I am making a mask dedicated to both my youtube channel and 4chan. I am going to do it entirely off from whatever I remembered back from 4th grade art class. Could you please let me know of any dos and don't when making the mask. I will make the mask the entire way through on this thread. Hope you enjoy.
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>>1009952
Got myself a bowl and water but I think I'm gonna get some rest first before I do anything else.
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>>1009957
Make sure you measure out where exactly are your eyesight's are through the mask.
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>>1010071
Thanks for the advice. Just woke up and getting back into it.

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So I have a 31 x 21 foot shed on 10 acres. I want to do something as a personal business in the shed or maybe with the 10 acres to make a living. I was thinking of raising goats and maybe doing wood working. Any other ideas on how I could make some money with the property for a personal business? Id prefer it if I could work from the property.
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paint a giant sign for $10 handjobs on the shed and get to work
>>
Bees!! 100 lbs of honey a year per hive.
Grow and sell cut flowers if you can set up a farm stand.
Goats are great especially paired with bees, candles, soap etc.
Whatever you do diversify your crops and income as much as you can so when one project fails another is still kicking.
Before anything I really recommend "The One Straw Revolution" By Masanobu Fukoaka. It's a short read that got me into permaculture and really makes you think about simple farming practices.
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>>1009732
undrated

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I want to build an autonomous robot - really imaginative, i know.
I bought a broken down rc car and and will replace most electronics and add some sensors and other fun stuff to it.
In theory i should be able to do most of this, but i'm currently struggeling with a system to read the current position - as i don't want to control it myself with a controller.
My first thought was gps, which turned out to be too inaccurate. I just learned about differential gps which might just do the trick, but i'd need some more setup and i don't want any other electronics...
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>phase difference
Nigger just use the strength. And you'd need four for three dimensional "triangulation". You also need a reference value, like the distance between known wifi points. Linear algebra, have fun.

Same with the GPS, you don't use the GPS, you would use the average for an individual GPS across many measurements, and use those for "triangulation".

If you ask around the arduino or raspberry pi programming/hardware forums, you could probably find someone who knows how to get raw wifi signal...
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>>1009624
>just use the strength
That might be a good idea outside but even if i'd measure accurate enought i'd expect heavy fluctuations of fieldstrength due to multipath fading and random shit that stands everywhere.
Considering the raspi stuff - i tried to avoid using this, but if i end up using graphical interpretation i'll probably use one anyways.
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>>1009621

SLAM, typically with a scanning laser range finder. A kinect will do.

If you really want to do wifi localization you need a special wifi chip that supports channel strength information at a high rate. See more here:
http://dhalperi.github.io/linux-80211n-csitool/

SLAM using lidar performs better though

The missile knows where it is because it has really fucking accurate laser ring gyros. Some missiles also figure out where they are by look at pictures of the ground and comparing them with a maps database.

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What do you know about the masonry trade?

For example, I'm looking around at the prices of reclaimed stones; caps, quoins, coping, general ornamental architectural stone. And it seems to be very high, for example the pictures cap stones cost 650£ per pair, and are dimensioned at 70*70 cm bases roughly and 45cm in height. Now these are old and carved stones, so that's a fair bit of money.

However if any of you know about this, what is the value based on? For example, it's clear to me that cut stone is far more valuable than cast concrete, is that...
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Some stone around here goes for a huge premium because the quarry it it was sourced from has closed so there's no other way to get the exact same stone for historical restorations.
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>>1009614
it's not cheap because it's almost all hand made and lasts thousands of years.
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>>1009623
Cotswolds?

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My weedeater hasn't been starting so I went and poured out the gas tank. This fell out of it, any ideas of what it is?
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If it had a hose attached to it possible a fuel filter
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>>1009608
I'm guessing that it is some sort of combines weight and fuel filter to keep the fuel line down in the fuel as you move the machine around, but like I said this is a guess.

Have you tried googling for a diagram of your make and model of machine, it might let you know what it is.
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>>1009631
>I'm guessing that it is some sort of combines weight and fuel filter to keep the fuel line down in the fuel as you move the machine around, but like I said this is a guess.
that's exactly what it is. you can pick one up at home depot (they're all pretty much the same) at an inflated price or ebay from china in 2 weeks dirt cheap.

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Hey /diy, I come seeking your wisdom on what is likely a very basic 'problem'. Hope you can help!

I have 5UV LEDs in series and a 3v motor (for a fan) and a Push-Hold switch. Power is 9vDC.
My issue is that I can't get both the LEDs and motor to work simultaneously with LEDs at a reasonable illumination.
I reckon the current demand from the motor is too high. I have tried varying the resistance as I don't mind if the motor runs at fewer rpms but the LEDs do not light up sufficiently.
I am now playing with some transistors to see but I feel...
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Voltage drop per LED should be around 3V for UV

You might need more voltage mate
>>
Wire them in parallel you git. 12v = 1 motor || 4-5LEDs or 3LEDs + resistor if you're worried about avalanche
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>>1009582
Tip here is that the same current goes through leds and this motor. LED will burn if you apply more than 20mA (it depends on led power, but i assume you are using small ones). On the other hand typical motor needs more than 20mA.
You'd better make it parallel (motor in one branch and leds in another)

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This triggered me

https://www.youtube.com/watch?v=1l7kv1YISX8
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the fuck, why'd he spend 10000 hours sawing out and chiseling the seats when he had a chainsaw?
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>>1009123
And every tool he had was fucking rusty as fuck too, also hitting a plastic handled chisel with a metal hammer!
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>>1009125
But still he made a ugly bench, with bad and ugly tools and in an ugly way. But at least he did it while you're still sitting here whining at someone who actually does something.

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tell us your odd problems: around the house, yard, car, whatever.. Other anons try to solve the problems

My cat has been peeing in this spot in the litter box. It used to clump pretty good when she'd pee anywhere in the box (nice tight clumps that I could easily scoop out), but now that it's warmed up and she's drinking more water, she pees more often and I guess it doesn't have time to dry/clump so it stays this moist, sticky mass that's really hard and messy to remove. I've basically had to tip all the dry litter to the other end of the...
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Eat the cat and get a real pet
>>
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>>1008848
For one you don't have enough litter in there. Second is that you're not going to keep the cat from peeing there. That's its pee spot. You're going to have to clean it more often, that's all. I have 3 cats and 3 litter boxes. They all piss in a certain corner of the box. Damn near break the scoop digging out their piss mud. Cleaning every other day helps.

Protip: when you do major clean outs spray the fucker down with white vinegar and let it sit. It will kill that ammonia smell. Then...
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>>1008858
Kill yourself and stop being a sensitive faggot buttmad about how their cat won't feed them constant attention.

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Hey /diy/
I'm going to build a kinky 4 post bed, strong enough to suspend gf from canopy.

I'm going to use 100x100 for the posts and 250x50 for the base side skirting, but I'm wondering about the base joints.
I want the bed to be as solid as possible, so I'm thinking of using either a mortise and tenon or a three piece lap joint (I want the posts to be one piece the whole way.

For the Canopy I'm sorted, going to use three piece lap joints for the corners, and lap joints for the slats.

Anyone have any ideas or experince making...
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You sound like you're almost set.

While I haven't built a bed frame such as this, do pay attention to the orientation of joints as the load bearing points may be more susceptible to shear instead of compressing the main posts.

Another consideration is transport and disassembly, should you renovate or whatever, you might need to move the bed. Needing ten men to lift and place the canopy might just make life a little harder, especially if it's close to the ceiling. Consider locking mechanisms for the joints as well, say large dowels for, say, bridle...
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Make a cage under the bed and lock her in when she's bad.

You degenerate fuck.
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>>1008436
OP sounds like he's got things sorted. Onto

Step 2: obtain gf

Fortunately for your setup, willingness is optional.

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We've had this thread almost weekly now for a while and the conclusion was it's no more expensive to buy a pre-made one.
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>>1008411
You can even get free ones from time to time
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>>1008407
Just go to amazon or aliexpress and get one, i got mines for less than 2 bucks.

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Hey /diy/, I posted a similar thread in /g/ but to no avail, so I come to you.

What would you suggest to a total novice who wants to get into electronics? I have a few ideas I'd like to build (e.g an auto-tracking drone that uses a GoPro, like the HEXO), but I don't know where to start and what to look at. I'm primarily interested in:

Developing the software that runs these electronics (e.g. using the camera's live video feed, to auto-track the subject)

The software needed to control them, which probably falls under app design as the...
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>>1008068
You can start by checking the catalog.
>>998973
>>
>>1008108
That's amazing thank you, I completely overlooked it!

Last question: what sort of programming language, is appropriate for this sort of work (controlling and interacting with electronics)?
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>>1008118

A.) you are baiting us
B.) you are baiting us
C.) Learn the basics, what is voltage, what is current, what component does what.
D.) you are baiting us


Choose one.

greetings from germany

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Hello Anon. Is there any BIOS repository site? I need to apply some bios updates to some old mobos, and their manufacturers website does not exist anymore.
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>>1007607
pcchips is ECS now.
please explain >why.jpg you're applying updates to ultra-low-budget motherboards that are over 10 years old?
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>>1007630
Poorfag here, Anon. Because they are still working, because I do not want to throw them away, and they are able to work in winxp with office, browse newspages and play with MAME once in a while.
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but why BIOS updates? where is the benefit?

Snagged an U.S. cleaner.
Only seeing that it can damage soft gemstones if used for jewelry cleaning.
Are there any other things I should be wary of using this with?
Anybody have any experience with them?
What works well?
23 replies and 4 images submitted. Click here to view.
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>>1006826
It clean pretty much anything you can fit into it, and you would be amazed how much dirt would float out in a beautiful cloud shape
>>
>>1006826
We have this in our lab. Love this thing. Will clean most anything, glue, rust, dirt, grime, nasty shit and oil it all comes off in a bigass WHOOOSH.
Protip: to clean with flammable solvents (acetone) pour acetone into a small beaker then add your nasty tools, samples, whatever. Put the beaker into the water and watch as the vibrations travel through the glass into the solvent.
>>
>>1006893
>Put the beaker into the water and watch as the vibrations travel through the glass into the solvent.

You just blew my mind.

I've been wanting to some some solvent washes in the gf's ultrasonic cleaner but she won't let me because she uses it for jewelry (her business) and is afraid it will damage it.

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