What to do with old window counter weights?

My house was built in 1915 and we are replacing the windows to get better efficiency. Now I have all these weights. I can have them thrown into a landfill but that seems like a bad idea. I've seen people doing things with homemade forges but I don't have one. Would these be useful? Could they be melted down? Or could they be toxic?

Asked by Bitter73 5 years ago


How do I calculate an LED power supply? Answered

 Okay, I don't know a lot about LED's but here's what I've done so far. I bought some 12v LED strips and used them to surround a display in my shop. I soldered all the strips together and attached my bench supply.  The LED's seem pretty forgiving and I can run them at a reasonable brightness at anything between 8.3 and 12 volts. 8.3 volts draws 0.065 amps and 12 volts draws 0.65 volts. I have no idea why it seems to draw less current at a lower voltage, unless my ammeter is faulty on my PSU. I am now wanting to attach a power adapter. I have a 12v 500mA supply but am worried it won't cope. I also have a 12v 1.25 amp supply but am guessing this may up the voltage and burn out the LED's. Do I really need to buy a 12v LED driver or can I get away with a cheap non-switching adapter?  And if so do I need to go for something like a 12V 650mA? Thanks Simon

Asked by slysimon 8 years ago


HPR? Answered

Are you considering doing any future classes related to High-Power Rocketry? Such as how to get NAR/Tripoli certified and build and launch H class or higher motors? It seems like it would be a natural progression from this. Obviously it takes a lot more time and money and knowledge. If you are interested I am currently NAR Level 2 certified and going for Level 3.

Asked by AdrianH45 1 year ago



How to play MP4 movie files more smoothly on Mac?

When I play a movie in MP4 format on Mac, it happens to freeze sometimes. How to make it more smoothly?

Asked by DevinMariah 3 years ago


how do i get my toilet to stop leaking? Wax ring has been replaced. Bowl is not cracked. Water still leaks through.

To clarify... the leak is between the bottom of the toilet and the floor....

Asked by 9 years ago


How do i get my parents to give me my xbox back?

I tryed rasieng my grades and beeing more mature how else can i deal with it?

Asked by areospace 5 years ago


can i fly a very light aircraft with a small lawn mower engine?

I am trying to build an enclosed ultralight aircraft similar to the Cri-Cri made by michael colomban. I think i can make it around 100 or 150 pounds. I have an engine that is somewhere between five and ten horse power. i could possibly get another one of relatively the same amount of power. i have read about the DA-11 made by leeon davis that ran on an 18 hp engine, but is there a way to calculate weight vs. hp so i can be sure it will fly? (;  

Asked by elliotstewfus 7 years ago


Powering an Android Tablet without a battery?

So I bought my sister this Visual Land tablet about 2 years ago. Eventually both the mini usb and charging port broke off from the logic board as expected from a cheap product. So I have this nice idea of using the tablet as a car nav/entertainment system. simply get rid of the battery and push 5v via a standard cigarette light usb adapter or make one with some 5v regulators and done. I tried resoldering the charge port. I get 5.23v on random points on the board but I get 0v at the battery with the charging port connected. I pulled the battery and tested the terminals on the board with the charging port connected no battery, 0v at the board and the battery alone is also 0v most likely dead and trash as it sat for 1.5 years in a shoebox untouched. So I pulled out my homebuilt psu power supply and hooked up the variable output to the battery terminal on the logic board. When pushing 3.7v~ I can get the first splash screen to show up but the tablet shuts off right after. When pushing 3.8v any thing higher the first two splash screens show and android starts to boot but the tablet powers off soon after.. So i decided to risk it and pushed 5v directly to the board. It started up fine and booted into android normally except for the low battery issue and some heat coming from the processor. Maybe a heatsink and rigged laptop fan into the casing could fix that? It shut off normally as if it had a dead battery. How much voltage doeas a generic android board need? Current?Does the board take 3.7v but since theres no battery it wont boot? How could I fake a fully charged battery? Or could I possibly flash a custom rom? Do you guys need more info? I could provide more pics Note that the battery is a 3.7v 3500mah li-ion battery with only a positive and negative hookups. Also i took some tape and covering off the battery to see if it possibly had its own controller board. It did have a small  pcb board but it seems that its only "a transfer" board, it takes the power from this cloth like cable and passes it into the wire thru the pcb. Should I try to hookup 5v straight to the battery to test it out? Battery has 0v so it might be useless.

Asked by mcarrascoza 3 years ago


Does anyone know how to identify a ring? Answered

I have a ring but i dont know what kind so could anyone please tell me if they know a way to identify it, Thanks.

Asked by tastur26 6 years ago



movie ideas anyone?? Answered

Hi I'm a filmmaker (i work for Stop Motion Pictures) and am really looking for movie ideas because right now I have nothing! I have movie making block. Any idea I choose to use you will be credited. It will probably not be made in a while I'm working on getting my camera and tools. Please share any ideas! Even stupid ones!

Asked by amakerguy 9 years ago


I WANT TO CREATE A OWN TV CHANNEL Answered

I am 3rd year student of engineering (ELECTRONICS & INSTRUMENTATION) . I want to create a own TV channel for study purpose then how it is possible and what i am doing to achieve this. i want to help from my seniours who worked in this organisation . and want to ask you how a channel telecast ..... please inform on my email- id erabhig@gmail.com erabhig@yahoo.com erabhig@rediffmail.com erabhig@hotmail.co.uk please anyone have a information about this please share it.                                                                                            Thanks                                                                                      Abhishek Upadhyay

Asked by Abhishek Upadhyay 6 years ago


How powerful of a motor do you need to run an alternator? Answered

From questions I have read and step by step’s I have read a question came to my mind. How powerful of a motor do you need to run an alternator? I checked the Delco Remy alternator series from 10SI in 37 Amps, to the 40SI durable brushless model, in 240, 275, and 300 Amps. All their performance charts show rpm’s at the alternator not the motor. The pulley on the crankshaft is considerably larger than the pulley on the alternator, giving you more rpm’s at the alternator than at the motor. All their performance charts show rpm’s from 1200 to 8000 rpm’s. All their performance charts show at 3000 rpm’s you get 13/16ths of max power. The last 5000 rpm’s only gaining 3/16ths of power. The thing is none of the performance charts say the horsepower to drive the alternator. I decided to approach the problem from a different direction Typical alternator efficiencies are in the 54%-60% range. Brushless alternator efficiencies are in the 60% 70% range. A typical 12v 60 Amp alternator produces 720 watts at 55% efficiency. It needs just 1310 watts to drive it or a little under two horsepower at 1492 watts. This does not account for mechanical efficiency of connecting the alternator to the motor. With this in mind a three horsepower motor should drive a 12v 60 Amp alternator. This is just an educated guess but I would like a horsepower chart. 720 watts would do well at charging a battery bank while you sleep; however I could not run my microwave and charge batteries at the same time.

Asked by Josehf Murchison 7 years ago



cheapest way to convert dc to ac?

What is the cheapest way to convert dc to ac.i need a cheap an simple solution.i don't need a circuit that convert 12VDC to 220VAC i need a 12VDC to AC circuit

Asked by vina1991 2 years ago


common marker? Answered

Would Crayola pro markers be ok?

Asked by Atag the coolest 10 months ago


free simple guideline for making hho generation cell?

Can i make home made hho generation kit.if it is possible to make my own what is maint tips for it.

Asked by udayshan 9 years ago


GIF not created?

I have created the script and it runs through it to take theimages but errors out.“helloMe.sh: line 3: convert: command notfound”.

Asked by Sleekmaus 1 year ago


​Unable to do "Save As" of MPP File

I have multiple MPP files that I can no longer perform a "Save As' (into Excel, csv, etc) on. I am now getting an "Operation failed" message box. There never used to be a problem, but now there is. It is affecting multiple users, not just myself. I don't have any idea even where to begin troubleshooting what is going on. Any suggestions to repair mpp file or fix this bug would be greatly appreciated.

Asked by Gerrison 12 days ago


what type of current flows in the starship coil and in which amount ?

I want to know that what kind of current is flowing in starship coil because it has winding of naked copper wire so if we give any supply than how it will work?

Asked by vipsi 5 years ago


Fridge conversion anyone?

When I see my local scrap dealer I can't overlook the amount of well looked after chest freezers and fridges.I already found out that most either have a failed thermostat or failed heating element for the evaporation of the water during auto defrost cycles.So I started to think about converting a nice and small chest freezer for 12V use.A first check for available 12V compressors showed that they cost an arm and a leg.DIY with a 12 air compressor is out of the question for safety reasons and the fact that these toys are not ment to handle these conditions.My next stop was Youtube and I found some teardown and scrapping of fridge compressors.These things are actually so dead simple in design that without the enclosure we would need ear protection all day long.But durablitly is often really simple, sadly this mean anything to use a frequency generator or similar is not only inefficient but will fail on a condesator motor.However, these motors are quite bulky...In therory it should be possible remove all stator and mains voltage bits to make room around the rotor.And from that we really only need the axle and bearing mounts.Am I thinking too simple?What would stop someone from using a suitable sized brushless DC motor with couplings to the cut orginal axle?Modern, small compressors often use less than 200W, so how hard can it be?Disclaimer:I am aware of the legal side of things and such mods are nothing a tradesman would sign off for.But I do wonder and like to tinker to prove a point or theory ;)

Asked by Downunder35m 12 days ago


Is it possible to cancel out sound using hi-fi speakers? Answered

I know that noise cancelling headphones exit but is it possible to scale that up and have the out-of-phase noise played through speakers?  If so, and the microphones were against the wall of the offending neighbour and the speakers were to be aimed at that wall, would the noise be noticeably reduced? Thank you.

Asked by FriendOfHumanity 8 years ago


how can you make your own d/c variable voltage tattoo power supply?

I need it to put out no more than 2 amps. Also can anyone think of a clever household item to use as a footpedal? Thanks.

Asked by opiate4themasses 9 years ago


What is 5 core solder? Answered

All i seem to find is a #5. Thanks

Asked by onrust 6 years ago


How to make Voltage regulators

I would like to know how to make a voltage regulator for an old generator. The regulator has stopped working and is hard to replace. I need an out´put of 120 volts with 15000 watts and ofcourse the 50-60 hertz. Thanx for your time

Asked by Soochi 10 days ago


Does anyone have SOLID information about the Searl Effect Generator?

I have done several searches. It seems to be a closely held data. What I have found is incomplete and sketchy.

Asked by unclejoe 7 years ago


how do i make a homemeade dungeons and dragons board and figures using cardboard and paper?

I have no money "whatsoever at all under any circumstances" but i do have a load of craft supplies but i have no glue but staples and tape i use to compenstae things with --My question is;is there anybody willing to tell me how i can make my own cardboard Dungeons and Dragons board and paper chacters "i dont even have dice but i have made those from paper/cardboard while watching lord of the rings this morning"it is really boring here in east tenneessee where i live and me and my friends are looking forward to your response "Please someone anwser this one and give me good anwsers please i have picked instructables community because almost everyone here is nicer than family :D thanx a million!?.....ps:i have all the handbooks and stuff ive downloaded and whatnot i am surei have them all after 2 years of searching yeah im sure...

Asked by wizard744 9 years ago


What's The Best Way to Organize Nuts / Bolts / Washers / Fastners? Answered

As a fairly capable "do-it-your-selfer" I still struggle with organizing my substantial collection of fastners of all types and sizes. I have a dedicated 14 drawer tool box with 41" W X 20"D X 2"H drawers in which I now just throw all of the fasterners of a given type, size or material in a zip lock bag.  When I need something I have always have to open all the drawers to "maybe" find what I'm sure I already have.  I know drawer dividers and lables are part of the solution but I'm not sure how best to make them nor how to "lay out" the various sizes, materials etc... Maybe you have had this problem and solved it.  All suggestions are welcome & thanks in advance.

Asked by Baytonian 8 years ago


Ponoko Alternatives? Answered

Hey there! I'm really excited about this class, but I have a question...do you know of any alternatives to Ponoko that are Canada friendly? The shipping costs are crazy to Canada using Ponoko. They wanted 40 bucks to ship me my little tissue box :(

Asked by Taolin 2 years ago


i bought a stand-up arcade game and they didn't have the key to the front panel. how can I open it without a locksmith?

This is a classic ms. pacman machine by the Midway company. it looks like it will take a normal key, not a round key.

Asked by 8 years ago


Can LED's in Gemmy Kaleidoscope Light be replaced?

I'm trying to re-purpose a Gemmy Kaleidoscope Green LED light bought last year for outdoor christmas lighting. Is it possible to replace a couple of the LED's in it and make it a multi-color unit (RGB) instead? Here's what the innards looks like. Not sure where I can get the LED part numbers to look them up. Thanks for any help.

Asked by joe_renaud 10 months ago


CO2 breathing animals?

Obviously from what we see today, evolution branched off into two sides, the co2 producers, and the co2 users.  Now all animals that walk or swim the earth today breath in oxygen and out co2.  It may sound crazy, but have we not even attempted to produce oxygen making creatures.  Evolution just didn't really branch off to this kind of creature and it would be very difficult to create.  Todays Autotrophs don't produce enough energy for a large animal.  Trees and small single cell organisms use tiny amounts of energy, but could a hybrid allotroph, which gets the majority of its energy from eating like a normal cow, but then it also uses co2 and sunlight maybe, and then you can eat it.   Just a crazy thought that has always bugged me.

Asked by jj.inc 6 years ago


Infrared Sauna wiring?

Well, I bought a used infrared sauna the other day for real cheap because it "just stopped working all at once". Figuring its just a fuse or something, I took it. Well now I cant figure it out for the life of me.What seems to be the problem is that no power is getting to the primary transformer. That would be on the second small circuit board to the right. It is getting to the secondary transformer fine. Heres a pic of whats goin on. Those things on the sides are fuse holders, (no not burnt out).

Asked by LiquidLightning 6 years ago


is there a way to reuse an old cell phone camera and make it a mini video camera?

I have an old cell phone with a pin hole style camera on it.. I think its a 4 megapixel camera on the cell phone. I wanted to see if i could some how use the camera to put in the rear of my car as a small back up camera. I was thinking it could run off the same display as the cell phone or is there a way to maybe attach it to a larger display?

Asked by defadelorean83 7 years ago


Thermal insulation/cover for heating water bottle

I am building a water bottle that can heat water inside up to 80 degree Celsius for my engineering project. The design of the bottle is as follows:1. an aluminium or steel flask2. heating coil at the bottom of the flask(for heating)3. battery and circuit for the heating coil is located below the heating coil.I want to design a cover such that a person can hold the bottle when the water is hot. Also, i want to protect the circuit and battery at the bottom from the heating coil. How can I do this? (As of now, i was thinking to spray polyurethane foam around the bottle and use a plastic cover. Also, using a polystyrene board below the heating coil to separate it from circuit board/battery). Are there any other insulating materials that can be used? Considerations for cover and insulation: 1. Should be able to hold the bottle 2. Wash the bottle (hence, waterproof)

Asked by NagarjunG4 16 days ago


Where can I find PET recycled fabric?

I'm looking to make a messenger bag and a few other things, but instead of buying new ballistic nylon fabric, I want to get PET fabric. Where can I find this sold by the yard?

Asked by sarahfish 9 years ago


Are there any legal suggestions for getting people to slow down on our street?

I'm talking guerrilla warfare. We don't have sidewalks and narrow country roads so walking with a stroller or a dog means you risk life and limb to leave the house--no one drives the 25 MPH speed limit (except me). The town police and the town traffic commission are useless and totally closed minded to any traffic calming suggestions, especially those that cost money. I just want them all to slow down. Any suggestions??

Asked by TeaQueen 9 years ago


Is there a way to download/privatize multiple Instructables projects at once en masse?

Is there a way to download/privatize all of one's own projects in a single stroke?

Asked by OrigamiAirEnforcer 16 days ago


how to convert an audible sound into visual?

From the Barkhausen effect, one can hear a cracking sound, how can that sound be turned into a visual signal?

Asked by 9 years ago


Trying to figure out how ultrasonic humidifier detects low water level

Hello all, I'm currently working on a home automation system and have decided I want to throw my fragrance diffuser into the mix. What I'm trying to accomplish is I'd like the diffuser to come on whenever the unit has power so I can simply control it with a Sonoff SV. I was originally planning on just replacing the guts with an Arduino Nano or something until I tore into it and realized I have absolutely no clue how this thing detects when the water level is low! There's no sort of float switch or resistive fluid detection. In fact, the only part that has contact with the fluid is the ultrasonic transducer. I'm curious if anyone can look at the PCB and give me some more insight as to what's going on. On the far left the five pins coming into the board is the cable connector for the buttons and LEDs, the two large pins beneath that are the buzzer for making beeping noises when buttons are pressed, The SMD IC towards the middle is from what I can tell the brains of the operation. The three large pins (two with solder) near the top center are where 24vdc comes in. The two large pins on the upper right are for the fan and the two large pins on the bottom right are for the transducer. If anyone has any insight as to how this thing reads a low water level it'd be very much appreciated. Thank you!

Asked by harry88 16 days ago


Problem with the Eagle Software?

I never received an AutoDesk ID after loading the Eagle software. When I try the expand the Projects Folder, there is nothing there.

Asked by Doug Poray 9 months ago


Petty Coin Bank Design - Coin Dispenser. What should i use?

Hey Guys, need your advise on this... Going straight ahead to the point, What can you suggest i can use for the movement of the Plate in the Coin Dispenser Design in the image? I need a component that does a push-pull action based on the design inspired from this video: http://www.youtube.com/watch?v=rwG-sG27360 Need your advise. :)

Asked by Gedon 6 years ago


How to control someones computer with command prompt?

The title is the question.

Asked by chanman789 7 years ago


is 2A=200mA?

I have a a wall plug to dc power supply that outputs 12V/2A , I also have a security camera that's input is 12V/200mA. is it safe to use these together?

Asked by 16_hope_dylan 2 years ago


Color Temperature ? Answered

I dont understand how to change color temperature on a Nikon D3200.

Asked by jkellamla1 1 year ago


sorry all this went over my head.?

The lesson here doesn't jive w/Nikon CoolpixI can't find the booklet on this old camera ...any suggestions

Asked by VrindaB 1 year ago


Can I make line follower robot on white line and can you help for coding for this

I want to make line follower robot on white line i need program for that so can you help for the coding to made that robot.?

Asked by Pranali parange 17 days ago


Blue-ish tint to my projector?

I recently bought a digital lcd data projector from garage sale , i saw the projected image before buying and was happy with it , but alas once getting it home and setting it up the image now has a blue tint it. the projector model is,  Sony VPL-351QM  lcd data projector . i think it was made in about 1994 , and it weighs about 25 kgs, to be honest when i saw it i thought it was some sort of old digital cinema projector, like they use for the Ad's before a film. any help would be much appreciated.

Asked by jesusofnazereth 8 years ago


What's the best way to cure fresh cut bamboo? Answered

My dad has a bamboo thicket that's overtaking his yard and he is begging me to come take some. The only problem is, I'm unsure how to properly dry it out without it cracking/checking. Any help would be awesome.

Asked by koopa31191995 8 years ago