Archived threads in /diy/ - Do It yourself - 605. page

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And this 3w+3w amp.

Amazing sound quality. 36c each.

Only issue is a buzzing sound when the power supply doesn't have sufficient ripple suppresion.
Easy fix.

Do those allow you to charge batteries while they're being used?

I'm planning on using an Adafruit Powerboost 1000C for a project, but if I could save a bit using one of those and a buck/boost module, I'm all for it.

>>952438
Yes, I used them for my speakers and I can use the speakers while it's charging, so I'd assume yes.

>>952182
yeah. its just a rubber daibphram and a AC motor inside it anyway. Maybe clean it if it's been in a fisht tank for a while, but its not dangerous.
Why tho?

>>952184
I can smell that sort of electric smell is that ozone? Its brand new. Btw thanks for the response. Im too embarassed to say why. It sounds crazy when i say it.

Safe enough. You know how easy fish die?
They just don't have much CFM

It's looking like a $40 hollow core door is going to be cheaper than repairing it with mesh, spackle, and paint considering id have to buy all those.

That IS crappy. But I honestly suggest you just have the super do it. Renting sucks, but one of the only benefits is that broken shit isn't your problem.

>>951364
Replace the door you scum. You signed a contract to either not break shit or fix it if you do.

>>950143
Only suckers buy tools new (unless you need it right now for something you will be doing today and you can't do it without it full stop). Chinese made tools at that. Get a set used for cheap on CL and maybe drop a little on rebuilding the batteries.

>>950146
I kind of do need it right now lol. I had a comparable Dewalt XR kit that I just returned because the drill was dog shit and I need to get a basement finishing job done ASAP.

I don't mind paying full price for good tools that will last me. They'll get used to death.

This is /diy/ not /buy/

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>>949324

Water, ice and salt. or design a worm box with a spout so it can drain into a sink and attach a nozzle to your kitchen faucets to allow a continuous flow of cold water.

>>949324

In fact, looking close at that same design it has a spout at the top of the worm box. All you need is running water.

>>949324

Why is the cooling pan copper? Realistically all that needs be copper is what the alcohol (vapour) touches. That said, making the pot copper is a good thing, just not strictly necessary.

To keep your pipe cold just use a steady supply of cold water. Since I don't see a drain in your tray, maybe use ice bath instead. That said, you won't get great yields with a pot still, and you should probably look into reflux stills, or at least pack your worm with copper scrap on the uphill part.

Good luck and don't get caught.

>>948088
>i have like trying to build things
*i like trying to build things

>>948088

Nice stock photo

I can tell you are management material already.

>>948128
My bad, lemme go draw you a fucking picture of engineering as that is the point of this fucking thread

Powder coat it if you want. It will look better than cheap paint and it lasts longer.

>>948089

Seems a bit expensive, man. Also from what I can tell it looks like viewing this stuff at different angles changes the color you see.

>>948094
If you have your own setup and use it a lot it saves you quite a bit. If it is done properly it looks nice.

>>944122
put a transistor driving stage on the output, you dork

>>944126
I was just going to say this! Transistors or ice cube relays are really the best bet.

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PLCs! Finally a topic I can talk about... I was a project engineer/manager at my previous job and spent a ton of time on PLCs (technically PACs).

Just use a relay. They are super cheap. You can get small ones in whatever voltage you need. How fast do you intend on switching the device? Large SSRs are <$10 on Amazon and you can get various small relays from whatever electronics supplier you like.

Transistors are fine, but I think relays are better because the available formfactors lend to control panels better and they are widely recognized in industry. Always try to avoid rigging shit together.

My recommendation for a CHEAP PLC is Velocio (http://velocio.net). They have some really affordable shit with some decent modules (like a relay board). I have one and it's good for the price. You can do Ladder programming or flow charts. It even lets you NAME variables and inputs/ouputs.

The software is kind of clunky, but it's functional. They are a small company, but their support is good.

I've used Automation Direct's DirectLogic controller before and fucking HATE it. I don't have any experience with the CLICK stuff.

I have a lot more experience with Opto22 (awesome product) and Allen Bradley CompactLogix though.

(Picture related. Panel on a refurbished machine where I used to work. If you think this is messy, you should have seen it before. I was constantly fighting with technicians to make them do neater work.)

Burning usually changes chemical and physical structure of the plastic, the easy way is using a heat gun and being really cautious with the heat applied.

>>952662
if it's on fire, that's bad

you want to melt it, over moderate heat, definitely outside

>>952667
What about if a try metl the plastic like lead into a pan? can works? that change the softness of the plastic?

If I use Paint thinner to melt the plastic?

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Mounted in a vise with a piece of scrap wood to serve as a straight edge.

I took light passes with the grinder to avoid bluing the tool and drawing its temper.

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Finished with the first cut. I was happy with how I didn't seem to overheat the metal at all, but now I suspect the teeth are hardened to a much greater extent than the body of the sawblade. Well, this would make sense, I guess, but disappointing.

I think I might want to heat treat the steel after I cut out the blanks now.

>>951821

Come on, nigga, try a little harder. This is basic stuff.

Stick optical encoder on shaft (can be literally just a piece of transparency paper and the optointerrupter from a mouse's scroll wheel). Measure time between pulses. Determine speed by multiplying frequency of pulses by circumference of wheel.

>>951821

Reed switch and a magnet on the wheel would do it.

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measure the audio frequency of the clicks...

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>>951610

>>951614
sand it with automotive sandpaper (2000+ grit)

use slave labor if available.

>>951620
Nah son, i just want my classic ipad to be a special one. extra chrome finish

base coat of light gray primer, covered with the topcoat color of choice. Finish it up nice and then hit it with some 600 or 800 grit sandpaper in key places. Corners, edges, etc are great locations.

Lightly dab on dirt colored paint with a torn sponge or crumpled up newspaper

ive been using a cotton ball, would that work? there are some places the satin base has rubbed off through wear and tear, im painting those spots with the dirt/grunge paint. looks good so far

Making a shitty Modified Sine wave inverter for my graduation project.

>>946499
what the fuck is this

>>946509
ECG, faggot

Jesus, are those fingers or eggplants?

>>952221
more like peppers

>>952196
Those white ones are inferior to the greens. Look for the brushless xlt. A buddy has the milwaukee and likes them good enough.