ayy /b/ros, i need someo basic help with electronics: I have an arduino (80mA 4.5V output source) and I want to use it to switch a circuit ON/OFF wat do pic related, someone suggested it, but it doesnt work.
So I need a 5uF >200V capacitor to replace one of those old wax film ones in some old gear, the problem is that that isn't a very common value/voltage for caps nowadays. Is there any easier alternative to finding one of these? Can I run some in series? Use 4.7?
>>921697 chromed-looking armor on plastic is always a pain. Chrome paint usually can't do any better than shiny, even with a massive amount of prep and work, and it enhances every single possible flaw and structural wrinkle. Working from perfect vac casts the best bet might be vacuum metalizing or chroming, maybe skinning the parts in some kind of mylar-like material and bonding it smoothly.
If I wanted to start making some music as a side project and/or hobby. What type of program(s) would I need and how much would it cost? Would genre matter? What about recording equipment how much would that cost and what exactly would I need/ what is recommended ?
Google these questions. It sounds like you have no fucking idea what you want to do. Asking giant general questions and wanting specific exacting answers is something a lazy fucktard does. Your music will probably suck ass.
>>921390 A few years back when I played with making songs, I used Cakewalk Home Studio and it had everything for recording mixing down separate tracks of audio and MIDI. You could use audio loops with it but it was not real easy to do.
If you want to make techno/loop music, then there is programs targeted at that--Fruityloops (now FL Studio) is a bigger one.
Plus there is freeware/Linux programs too. But they are usually pretty shit compared to the ones you pay for.
As I saw it, PCs are great for mixing down but aren't real good at the actual "recording" part. You can easily spend $2000+ trying to build a PC that has the input ports you want, runs totally silent AND has no lag issues when recording. Nowadays you can just go spend $300-$400 and get a portable multitrack recorder (flash or hard drive-based) and it is way easier to use, is portable, comes with phantom power XLR ports and has no noise or lag problems at all. You just gotta copy the recorded files onto your PC for mixing down and adding effects.
So I'm seeing a couple of really good instruction sets for building your own printer, but I'm wondering how the quality is to something made professionally.
All of the test prints I've seen have very obvious imperfections. This isn't a huge problem because I figure you could always go and sand stuff down a bit, but I also wonder how strong the material is in comparison to traditionally manufactured plastic.
A 3d printer would be very convenient for making custom robotics parts but I want to make sure that it will hold up to a certain level of... Comment too long. Click here to view the full text.
>>910102 Every plastic part in the picture you posted was 3d printed and they can withstand the forces required of a 4-axis robot (the printer). If printed on the printer in the picture, you can DIY something similar; I have an all leadscrew reprap.
So to answer your questions: Probably. Yes. I dunno.
Sup diy. I have always wanted to be a jeweler as a hobby ever since I had a job selling jewelry 15 years ago. I am finally going to start getting my tools together and I am curious as to if anyone here knows anything about it. I really would like some ideas on where to pick up scrap jewelry I can dismantle and melt to have my own metal stock.
Everyone wants to go off the grid with solar panels and such. But how viable would it be to make your own little coal powered electrical plant in your back yard? Its a simple process, and I live in the middle of nowhere and have access to coal. Thoughts?
>>920582 High-pressure boilers of a size practical for your application are not Amateur Night projects; they're dangerous as fuck and could explode with the force a a thousand suns if not maintained and managed very carefully. Might also involve a permit/license.
Like another anon said it might not be cost effective or easy to source coal. Might be better with a sterling engine that will run off any kind of fuel. Bio, wood, coal, charcoal etc. Probably not very efficient though.
Could always pull out a diesel engine from a car or truck and repurpose it as a diesel generator.
I would like to make myself a small lift to lift my computer tower from underneath the window to in a direct line out the window.
My plan is to just have the actuator mounted on top of a box that's on wheels that is just small enough to hold the tower underneath the desk when not in use. The actuator will be fixed to the top of the box and a plate on the other end for the tower to sit on.
Do I need something to stabilize the platform seeing as the only thing holding it will be the single actuator shaft?
Looking at designs for bigger... Comment too long. Click here to view the full text.
>>920617 >Do I need something to stabilize the platform seeing as the only thing holding it will be the single actuator shaft? From the ones I've handled, yes. You would need some kind of rack arrangement that would move up and down, and then the actuator just does the lifting. >I am also having trouble finding how loud these things run, is the motor constantly running while under load or just while lifting? loudness depends. The motors only run when they... Comment too long. Click here to view the full text.
>>920617 These things are just a geared down DC motor that drives a worm drive that extends and retracts a rack unit. They also have a limit or reed switch at each end of it's stroke to disconnect the supply to the motor. Also bear in mind that you reverse the direction by the polarity of the DC voltage applied to the motor.
>>920603 Bomb proof home backup system? You probably use 5kw/day at most and assuming I lowball the batteries (50 usable batteries * 70 Ah * 12 V * .80 % efficency) you'd have around 35 kw of energy to use and I'm really lowballing this. You could use the rest to make a kickass car or a really strong welding setup. I'd talk to someone who does home backup/solar stuff.
>>920601 I'd use it as part of an off the grid electrical system for my house (48v 1283.7aH in series-parallel ), until they died in around the 5 year old mark.
How old are they? They might be worth more just as scrap. If so you can make a DC stick welder out of them or a furnace. Make an electrical car or a few electrical gokarts. They'd be great for one of those solar-powered Elf vehicles/bicycle hybrid things. There's lots of plans online for similar vehicles.
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