/diy/ - Do It Yourself

Posting. This is mostly for electronics repair and chaos.

>>1890686
Doctored image, here's the original.

>>1759911
I actually picked my 144 Hz gaming monitor out of the trash.

It was missing the power supply, but I managed to bodge the PSU out of another trash picked, 27" non-gaming monitor into it. Even the backlight strobing works on it.

1 pcs banana box
1 pcs leftover insulation, cut slightly oversize
1 pcs Goodwill towel

You cut the banana box to your desired depth (I used a circular saw, knives are difficult to cut cleanly with), then you cut the insulation so that it's very slightly oversize, and place it inside the box. You then put the towel in between the insulation and the edge of the box, allowing it to friction fit. I used a ruler to push it in along the edges, and if you do it right, they can be mounted in any orientation.

For mounting, you can cut some keyholes in the bottom corners, or nailgun them in place before you mount the insulation and towel.

>>1759446
Yep, that's a POS. Its only issue was a shorted diode across the DC input. Really basic things they are, but very practical.

>>1759380
They usually have some relatively simple fault, like bad caps or a dead LED driver, so they're not USUALLY in working order when I snag'em.

>>1759027
Oh yeah and most of the other stuff in that picture is also trash picked.

>>1759019
More than that, it's impossible not to buy in bulk, and it's the best workshop shelving I ever had. The ones in the picture to the left and right are on wheels, and the big and heavy (~40 kg) monitor is also mounted on one of the rolling shelf frames.

All glory to supermarket shelving.

Dumpster dive ALL the things.

Your only option is a wind powered chimney mount extractor fan. Powering something as power hungry as a fan with spring power is ludicrous.

Lithiums like to be as empty as possible, but if you put them away with too low a charge, they'll have self-discharged to the point of destruction when you come get them.

Lead-acids ALWAYS need to be full.

Nickels like to be full, but they care the least.

>>1753545
Circulation water pipes are not a sanitary hazard if left unmaintained, as opposed to mould-collecting, dust-spreading, noise-transmitting air vents.

Floor heating master race.

I recently sanitized a fridge from the trash heap that had suffered a similar fate,

I started with a pressure washer for the coarse stuff, then I used a steam cleaner on EVERY. SINGLE. THING. inside. I even took the plastic lining off of the glass shelves and steam cleaned between the plastic and the glass.
The lamp glass.
The lamp holder.
Disassembled the interior fan.
Every shelf.
The little plastic cover that goes over the temperature probe.
The entire surface.

After that, I used bleach to wipe everything down. The whole procedure took about a working day. Before I reassembled it, I put a fan and a small bowl of bleach with some paper wicks inside it for a couple of days, letting the bleach slowly vaporize and get blown around by the fan, entering any small crevices that I might have missed.

The end result was very good, it smells like a brand new device, and a couple of months in there's still no sign of any returning odors or problems.

>>1729940
Your loss!
>>1729955
No.

To my understanding, solar storms don't do much to little devices like that. They cause extremely low-frequency electromagnetic fields that are able to induce currents into infrastructure like power lines and pipelines. These fields can't do anything to small things, because their wavelengths are simply far too big.

They can damage mains distribution transformers and generating plants by inducing a basically-DC current into the power lines feeding them, causing blackouts. Your copper tied landline phone might also suffer if it's hooked up to a really long line.

>>1727985
It was a joke, lol.

>>1726850
I'd be very wary buying a used forklift battery, since you never know what they've been through. The cells might be mush on the inside. :(

>>1727968
Ssssshhh I'm under cover.

>>1726863
That sounds like a decent rule-of-thumb for sane systems, where the size of the battery is determined by the consumption of the installation. However, my system isn't sane, since we're starting out with only a ridiculous battery.

It is nothing but a supply and demand calculation where you have to account for a few losses. If the solar array produces 10 kWh in a day, but only 5 kWh is consumed, your batteries will reach their bulk charge voltage limit without issues, and be fully charged with lots of energy to spare. This is because since we're not basing our battery size after our consumption, the larger the battery bank becomes, the shallower the cycles become. Instead of doing 40 % DOD on a 750 Ah bank, we do 20 % DOD on a 1500 Ah bank. The energy in and out of the system remains the same.

I'd like to know where you heard this from, I'd like to see how they arrived at this conclusion. Lead-acids (and batteries in general) are happier the less current they're moving.

>>1725456
Many things are unobtanium. How do you intend to "just replace" a board that was only made in 1000 copies in 1983, and is causing a multi-million dollar machine to not operate?

Even if things can be obtained, a $600 repair that fixes and remedies a common failure point on a $3000 board is very often worth it.

>>1725556
I just started fixing things for myself by picking stuff out of the trash, and after a few years of doing this as my main hobby, I started fixing stuff for other people as well. I started out by doing in-depth diagnosis and repair that other techs would just throw parts at.

>>1725015
Ha, I wish such a thing was available, though I'd feel bad wasting resources like that.

>>1725101
They're only about 50 kg each, but you don't pick them up. It would destroy my back, so I use a hand cart.

>>1724938
Not really, a normal residential 6-12 kW array will work just fine. How big an array you need depends on your consumption, not the size of your batteries.

>>1724892
No one sells them in Europe, MPP Solar mostly want you to buy directly from them in Taiwan, so you're always looking at ~3K with taxes and shipping.

Self-promotion incoming.

I do mostly electronics stuff, quick, dirty and practical. Lots of trash picking and repairs. Lots of long, recorded work livestreams if you're into that. A lot of solar system stuff is going to be coming soon.

https://www.youtube.com/user/FFcossag/videos

I think I've decided on an inverter as well, the MPP Solar MPI 10K Hybrid. It supports really flexible load programming, and the manual suggests that it's able to run in "grid backup" mode, where it runs on solar/battery until a specific battery voltage is reached, at which point it changes over to grid power.

This thing looks ridiculously good, especially for being a mere 2000 € unit ...

Here's a link to the manual for the curious.

http://www.mppsolar.com/manual/MPI%2010K%20HYBRID%203-PHASE/MPI%20HYBRID10KW-manual-20180301.pdf