>>1079180 1. Learn how to design DC-DC converters (buck, boost, buck-boost, SEPIC, Cuk, etc). 2. Learn how to design a battery charger for the specific type of battery you want to charge. 3. Figure out the parameters for optimum power transfer (or use MPPT).
BTW, the "shake" mechanism sucks. You'll get much better efficiency if you mechanically convert the shaking motion to rotation then use a rotational generator (i.e. a motor).
https://youtu.be/865OqMzp1Zw?t=250 >turn on machine >115 million watts
How is it possible to power these machines? Do they have a power plant on site to feed these furnaces? How can the local power utility divert resources to the furnace on demand like this? What do the power cables to a steel factory look like?
So I figure, if I run my ppg through a primary circuit breaker THEN ran city power through a secondary breaker that ONLY is connected to, say, my porch light, then would I be breaking any laws? The city would get monies and I would have my own power. Pic so unrelated.
>>1082201 I believe you to be operating under that false premise that you have to buy poco (power company) power. Please provide your city/state if you believe this to be true.
As for your question; your terminology is garbled. You'd run your "ppg" (i'm guessing this is some alternative power source) to your main load center and then have a secondary load center attached to your poco meter and a single circuit coming from it to a dummy load that would spin the meter a bit. There are no primary or secondary... Comment too long. Click here to view the full text.
Panama city Florida. Also using a magnetized rod with ferro fluid coated bearings I think I have found a way to reduce friction to null levels. I know there are news stories about ppl being fined and charged with crimes for not being on grid.
Hey guys So I tried to etch something today, but It came out wrong because I used the wrong gloss paper for it. Now it just looks rough, and I want to redo it with a better design I drew in Photoshop after seeing this one was fuckin Garbo. Is there any way I can reuse this housing?
>>1081868 Get a dead flat surface or sheet of glass, wet-sand it from about 600 through to 1000 grit Thing I found with aluminium is that you do want it very smooth to work well with stuff like etching, anodising and the like- basically polish it near-mirror or as close too as you can
Hello /diy/ I'm super broke and my laptop's connection to the power inlet thing separated. (See picture) I've tried to solder it tgt, as you can see from the melted plastic mess...and I had success with soldering the wires (3 different ones) tgt but can't solder it to the connection tab (?) The solder forms little beads that just fall off and don't join the connection. I'm brand new to this and don't know what I'm doing. Any tips? Reason why its not working? Thank you
>>1081774 I dont know if youll manage to solder that. I think the previous anon might be right about needing flux for this. soldering wire is easy because the twisted wires have cavities for the solder to flow into but that tab has nothing. the flux might help with that but Im not sure. If it were me (and im pretty dumb) id try to mechanically bond it some how.
I bought this clock online and it said it would work with a "small watch battery" The hole in the back is 6mm deep x17mm diameter. Could anyone help with what kind of battery I need? will this even work? I don't see anything inside that the battery would even contact. But I don't know much about these things... please help me.
>>1081538 do you have gravel in your yard somewhere? the neat thing about soapstone is it's a fairly hard material so its hard to scratch, but that means you can use equally hard materials such as other rocks or porcelain to grind it. just drag it out onto some gravel surface and skate around on it, it'll grind the soft epoxy right off, the alternative is to do it chemically, but that may spoil the surface even more by letting the epoxy soak into it.
So I have a small keyboard that was made as an external keyboard for a PDA, and I need it to connect to a raspi somehow (USB/other serial signal). It's a "Folding iPaq Keyboard G750", and opening it up reveals that it has VCC, GND, and data connections. USB has two data lines, positive and negative, but would it potentially be possible to send a single data line through it? It'd be through the positive line, I'd assume?
>>1080741 >>1080729 It's not USB. I used to have one of those HP Ipaqs. They're USB slave only. They can be connected to a PC through USB but you can't connect keyboards, mice,etc to them through USB.
The cradle connector also had an RS232 port which must be what your keyboard goes through. You should be able to connect it to the RPI through it's UART. I'm pretty sure it was full 12v RS232, so you'll need a MAX232 chip and a few capacitors... Comment too long. Click here to view the full text.
I really want to try stick and poke, Im on a small island in greece for the next 3 months and have nothing better to do. I already have 1 mechanical tattoo but i want more. I'm familiar with most of the needed materials. Does anyone have any tips or experiences with Stick and Poke? Being on a small island, i can only use Higgins drawing ink, a regular sewing needle. I saw that most legit stick and poke needles have 2-6 needles at the end. could i bundle more needles?
I over tightened the screw on one end of this shaft. Now I can't get it loose. I can't hold the shaft to prevent it from turning with the screw. I've tried pliers but it still spins. I don't want to use vise grips and possibly crush the shaft. What are my options here?
Hey /diy/ I got those LED I bought for a project, they aren't powerful enough and I'd like to figure out if you guys would know what to do with them. Here's the datasheet : http://www.produktinfo.conrad.com/datenblaetter/175000-199999/184551-da-01-en-INFRAROT_SENDE_DIODE_TSUS_5202_CQW13_VIS.pdf
What are these black lines on the pcb? Do they divide the circuits? This tv works for maybe an hour but then the back lighting goes out. If I restart it, it will work as it should. Model is ln-s4695D. Anybody have any ideas where i should look? I'm getting 0 voltage off the power out to the inverters. I was thinking it might be a mosfet but I'd think it would be quicker to go out.
Looks like separate low and high voltage areas, the white chips in between are probably optocouplers of some kind. My bet would be maybe bad caps, could be a mosfet too.
These things piss me off because the power boards are generally shit compared to the rest of the set, and all in all it's probably cheaper just to buy a new board, but if you can fix that one and do it well, maybe it will last.
>>1079003 That's what I'm hoping. The set itself is pre led thin line bullshit. It looks great and sounds good enough. I'm looking for insight on what might cause this though. It definitely seems like a thermal issue. If I read correctly you are telling me that those big black lines are isolations between circuits, if so I should only have to test to the left bit of it, seeing how once the back lighting cuts out I end up with everything else working. Does that sound correct?
>Anybody have any ideas where i should look? it's almost always the electrolytic caps. checklist for bad caps: >smaller than a D cell battery? >rated over 200 volts? >right next to a heatsink? score 2 out of 3 and there's 99% chance that cap will test low value/leaky/high ESR.
>>1072138 He has the balls to try anything but no so much the skills to match. His woodworking ability is that of a journeyman carpenter: That is to say, he slaps everything together with a couple of brads and calls it good. In one of his videos, he even uses a fisheye lens to hide the fact that the cabinet he just built was significantly out of square and the doors don't line up correctly. Such, it won't fall apart on your but it ain't pretty.
I am going to try to keep a welding general up now, because it is such a fascinating topic.
A couple questions to start things off: Who here has heard of underwater welding (pic related)
How many of you would follow a regular thread like this?
Also some more personal questions: I am looking to buy a mig welder. So far in my welding journey I have been using equipment at work/school, and dont have one of my own. My thought was to get a Hobart 210mvp, which comes with a spool gun and can take both 110 and 220. Is this a good welding machine? The research... Comment too long. Click here to view the full text.
I'm a newbie to 4chan but I'd follow a thread like this. I've been selling welding supplies for the past 16 years been in the business for about 25 Hobart makes a good machine for small shops or home use their a lighter duty machine made by Miller. Another machine you should look at is Lincolns mp210 it's a mig, tig & stick all in one (dc tig only) it runs about $1100 and the spoolgun for it is about $200 not sure if that's out of your price range but it'd give you some more options than just mig.
I'm going to start the process towards getting my welding certs from community college. Could anyone who has experience tell me everything they can about how it was for them or what it's like? Also, can anybody recommend any good websites on how to start welding on my own please? Good thread idea op. I'm also interested in underwater basketweaving.
>>1054309 >Who here has heard of underwater welding I have. But again, I work in the dive biz... Biological research diver, but over here it's the same school that teaches underwater construction as well as research divers.
I sprung a leak in my attic and looking up there I found pic related. It was all wet a definitely the source of the leak. I think it only goes when I have the dishwasher and the washing machine on at the same time.
As a diy novice, I have no idea why someone would build a pipe with a hole in the top.
Personally, I was planning to just wrap the little fella up somehow, but thought I'd check with you intelligent folk to see if you have some good advice.
/diy/ I need your wisdom on this here stripped Allen screw. I have purchased an airsoft version 2 gearbox second hand, but the previous owner was very negligent in taking care of it, he tried to remove the stripped screw by JB Welding a 5/64 on it, but failed. I am afraid of doing any work on it due to a lack of drill bits and screw extractors that could fit it.
So I dug up most of this stump to get the branching roots. Then I had it ground. Can I just fill back in with dirt or should I removed all the mulch from the stump. Specifically my concerns are bugs (termites, although I've never had a problem) as I'm going to build a deck here (grass discolour not an issue).
So im stuck and lost with what supersickideatodo.jpg just finished the very ending of children of the korn and dont want to see this mission abort and.see the mission jus left in the car. Already got some cogs a tiny bird cage 39gauge wire and 5 small thin quartz crystals Halp. Idears?
Non slip tape for stairs. Is there any that don't tear up floors? My parents are getting older and I want to put it on the stairs so they don't slip but they are stubborn and won't let me do it because they're afraid it will damage the hardwood step. Any advice is appreciated. Thanks
Hello I'm working for a Institution which has a large open presentation-hall with high windows in it's building. Frequently, birds fly in and try to get out via the windows and fly against it and die after some attempts.
I want this to stop but my boss is very concerned with bad aesthetics and we can neither buy nor order premade ones here.
My question to you is, what form do the stickers need to have and how much do I need to apply for birds to avoid them.
I'm gonna do them myself, planned is to order Vinyl silhouttes but I saw transparent... Comment too long. Click here to view the full text.
I'm thinking about buying a 3d printer, but my needs for eg replacement parts is minimal.
What about printing model kits? Is there any good source for them? I guess it could he possible to print the Pepakura kits from /po/, but what about "real" model kits, like anime, mecha, Warcraft, Warhammer, etc?
Sup /DIY/ so my computer monitor started fading-to-white/freezing over and I figured there were some busted capacitors - but looking at it everything looks pretty much untouched.
I can confirm that the DVI-D cable is fine since I bought another monitor recently and it displayed just fine which also accounts for the display drivers working correctly.
I've googled/reddited this beforehand but I don't get any direct answers to repairing it. - for reference I do have a soldering tool, wick, solder etc. all I figure I need to do is get a cap or other chip part and swap em.
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