How to make a pole camera to check bird nests?

I need to make a camera (a cheap one is ok-even a web cam) that is mounted on top of a pole, that I can lift up and take a picture (or video) of a nest. I need to be able to see where I'm pointing the camera, so I need a monitor I can connect with the camera, and then be able to remotely trigger the camera. Any suggestions on how to rig an inexpensive setup like this?

Posted by mieander 10 years ago


Tall PVC Flagpole

I know there are already instructables that show how to build a PVC flagpole, however what I need to build is different.  I want to build a flagpole that is 15-20 feet tall and can withstand relatively strong winds.  In addition, it needs to be portable and be able to be disassembled, so the sections of PVC can be no longer than 5-6'. I am worried that just using standard PVC connectors to connect the different sections will not be strong enough to withstand the wind.  This flag will be placed in the sand on a beach facing the ocean, so a 15-20' tall flagpole will need considerable strength. I figured I would use a 5 gallon bucket filled halfway with cement as the base, and then bury the base in the sand so it is sturdy on the bottom.  From there, I am having trouble coming up with alternative ways to attach the sections of PVC (besides connectors) that will withstand high winds and not snap.  Do you think the connectors will in fact be strong enough? If not, are there any good alternatives? Lastly, would drilling holes into the PVC (to attach eye hooks) compromise the strength of the PVC too much?

Posted by fanttamdiv 6 years ago



Fire Pole!

My house has undergone some small renovations over the past two weeks, the best of which was just installed this morning: a fireman's pole for sliding down!My boyfriend has also got the ability to climb back up... I have not yet attempted that.Here are some pix and videos. The construction is not quite complete yet so it's still all sawdusty and unpainted - looks like a workshop more than a home, but you know it's at least half workshop anyway.Down the pole: Up the pole:

Posted by rachel 10 years ago


Making Draping Poles

Posted by ptshanfueh 7 years ago


3.5 mm 4 pole splitter question (for use with ipod touch)

Hi, I'm attempting to put together something that is conceptually simple -- making a splitter for the 3.5 mm 4 pole audio jack so that one end supports a mic and the other a pair of headphones. I'm doing this because I want to hook up a better quality mic than found in the store-bought iphone headsets. However, after putting it all together, I just can't get it to work with my ipod. I've followed these pinouts (where 1 is the tip and 4 is the base): 4-pole jack 1. Left Audio 2. Right Audio 3. Ground 4. Microphone 3-pole jack 1. Left Audio 2. Right Audio 3. Ground Ive verified that all the connections are good using a multimeter. But when it comes down to actually recording with my ipod, I can't get the line in to work. Has anyone does anything like this before? Any ideas what might be going wrong? Is is it possible that measurements on the 4 pole jack isn't standardized and that the one I have doesn't actually fit the ipod correctly? Perhaps I'm completely wrong about how to connect the wires. So just in case, this is what I did: Line-in: Pinout (P/O) 1 and P/O 2 ---> P/O 4 (on 4-pole) P/O 3 --> P/O 3 on 4-pole (on 4-pole) Line-out: P/O 1 --> P/O 1 (on 4-pole) P/O 2 --> P/O 2 (on 4-pole) P/O 3 --> P/O 3 (on 4-pole) So yep, that's it. Any help is much appreciated : )

Posted by hlfwy.thr 9 years ago


Secure Bamboo Poles (150mm diameter) to top of wall (replace coving)

Hi there I have 2 x 3m Bamboo split poles to secure to the top of wall as a border/replacement for coving.What would be the best way to secure to the wall? I cannot hammer into the wall due to a pipe running behind where the bamboo will go.Velcro? Silicone? Double-sided adhesive pads/strips?Don' want it falling down during a meeting LOL

Posted by GregoryD45 5 months ago


Nordic Walking Poles

Commercial versions of these poles are quite hi-tech and expensive. They are usually made of aluminum or carbon fiber, but could cheaper versions for occasional use be made from bamboo or rattan perhaps? The shapes of the handles look quite complicated on some models. Anyone like to have a go at designing and making some? Paul W.

Posted by Paul Wotherwell 8 years ago


phototransistor for high voltage

Before the begining sorry for bad english I want to make laser tag with electric shock when hits This is circuit of taser what I want to do is remove the switch and replace with wire so that the taser can charge automatically then I want to put a phototransistor(that react to red laser) to the poles(where you get shocked when touch them together) but because the both poles are attached to bodies the taser can't be charged so I tried to block one side of pole with phototransistor but when I touch the two poles phototransistor burned(?) and I got shocked in this case what can i do?

Posted by hyeok205 3 years ago


(newbie) materials to build a sliding "inverted-L" stand / pole

Hi folks!Just discovered this fantastic website! I have this very cool idea for a 'ible I am working on and cannot wait to put it on the site. For now and as a first step (sorry, I am a newbie!), I am simply trying to build a simple stand with the following "inverted L" shape:- - - - - - - - - - - - - -||||(floor)Think of tje coat hanger in the picture below, only sturdier and with a single vertical pole (and without the wheels/mesh at the bottom). Also, the vertical pole does not need to be telescopic: as long as I can adjust the height of the horizontal pole I am happy. This could be done eg by mounting the horizontal pole on a "tee" fitting; but then how do I make it fix into a given position/height on the vertical pole (and still be adjustable)? (I had a look at this 'ible -- https://www.instructables.com/id/Third%2c-fourth%2c-and-possibly-fifth%2c-hand/ -- , but I don't understand how the tee fitting gets fixed into position: welding?)I am thinking of using pipes or PVC from a hardware store. My big question is: how can I get the vertical adjustment feature using such readymade materials? Thank in advance for any help!James KirinPasadena, CA

Posted by james.kirin 9 years ago


Bamboo Rain Stick

Hey, I am thinking about making a natural rain stick out of bamboo, but I don't know exactly where I should go to pick up a hollow bamboo pole to make the body of. I found a lot of sites online that I can buy bales of 10+ poles, but honestly I only need 10 feet or so to tinker around with. I am thinking a diameter of 2 or 3 inches would be good. Also, any ideas on what to use for the nails/screws inside the pole? I was thinking of finding some cactus needles or wooden pegs/screws, but I don't know where I could find enough. Any brainstorming ideas? The most important thing for me is how to find these bamboo poles. Any help or ideas would be awesome, thanks!

Posted by JadedEmperor 9 years ago


Safe removal of a ~30' HAM Radio Antenna

Hello all, I have a friend who has a 30 foot (approx) HAM Radio antenna mounted on his garage.  The pole base attaches to two brackets which are anchored to the exterior wall of a garage.  Near the top of the antenna, 3 cable anchors connect to brackets on the roof.  He wants it gone, and wants me to take it.  But, this must be planned out carefully.  The pole could be lowered 3 feet or so, so it makes contact with the ground.  It could be used as the fulcrum to lower this down into his backyard.  Power lines are not in proximity.  If several people were on the roof, could that point be used to lower the antenna gently to people on the ground?  My concern is that the construction looks aluminum. The pole is 2" steel pipe.  ButI cannot be certain on the actual antennd contruction or weight.  There are 3 or 4 small boxes mounted at various heights on the pole.  I can't image they weigh too much.  Can anoyone tell me what there are used for?  Occasionally, a red led will blink on the bottom of the case. I am excited to acquire components that one day may help me get my amateur license.  But I am concerned about how to safely do this, and will not attempt without a very clear plan.  I don't want it to end up being too heavy, and slingshotting the people on the roof (like something that would happen to red green).  I also need to insure his roof is not damaged.  I think the brackets will be left on, and the cable cut at the base.   Any knowledge is greatly appreciated!

Posted by huck alexander 6 years ago


Generators

Home portable generators have a 2 pole  roto with windings on it uses 24Vdc what I want to know is how many windings are used on each pole Does it matter if the windings are 100 each or 50 or what ever For argument sake lets us a Honda 3500watt generator I have been at this for weeks and cannot get a answer Hope some can help  Tim Murphy 

Posted by Tady43 12 months ago


Need to build a device to measure verticals

What i need to do is possibly use lasers, i need about 30 of them around a half inch apart inside an aluminum pole or something. then i need a light connected to each one which will be at the bottom of the pole. After the beams are broken i need a sensor to light up to tell me the beam has been broken. this way an athlete jumps and once his fingers break the beam i know how high he has jumped without having to deal with the vanes in the current device. just push a button to reset it all. no messing with the pole or vanes or anything.

Posted by CoachChamberlain 8 years ago


Studing?

What classes do you study for (as in need to study to get a good grade) and what is your grade level(as in 9th grade)(we should have a pole option for forums).

Posted by dogsrcool2me 11 years ago


I need an instructable on how to set up a vintage (60's) canvas tent

I bought a vintage canvas Wenzel brand tent at a garage sale and am now trying to set it up at home. I cannot for the life of me remember where all the poles go; ru-roh! Anyone out there have an old 2 room canvas tent that you know how to set up that you might be able to instruct me on???

Posted by koreyl 8 years ago


ESP8266 version 13 DIP switch

Hi, I bought a kit that uses an ESP8266 Arduino expansion board (shield) that has a version 13 ESP8266 module on it. That expansion board is not a standard ESP8266 board. It has an unusual 2-pole DIP switch on it that can be set to "ON" or "1-2". I need to understand what the 2-pole DP switch does and I need to understand the electrical connections it is connected to. There are many instructables about the standard ESP8266, but I cannot find any details about that DIP switch in a version 13 ESP8266 arduino expansion board. Can you please tell me where the DIP switch connects to and why it is needed. Thank you

Posted by agribot 10 months ago


Need help with switches.

II have two switches. One momentary and one latching. Both have leds and want to wire them so that the LEDs turn on or off when the latching switch is activated. Please see pictures as they are not regular 2 or 3 poled switches. Thanks.

Posted by bastafari 5 years ago


4 whell drive with a basic gun on top

I made a car out of knex that is 4 whell drive and i was wondering what every one thorght andi finished my semi auto gun holds 30 blue poles will post it soon

Posted by knexman 11 years ago


help needed to wire a series of toggle switches

Can anybody please show me how to wire a series of 7 toggle switches. The switches are 3 amp 2 or 3 pole, a diagram would be very helpfull with an explanation. Or a video

Posted by Woodycrafts 8 years ago


hi!Mood is still naked!

hi!Mood is a wi-fi device which generates led patterns and plays music in sync with your mood. It plays the tracks which best fit how you feel directly from stereomood.com, associating to each song the coolest and most appropriate RGB led pattern matching your mood. You can interact with hi!Mood through a mobile app interface so that hi!Mood focuses only on what it can do best: playing music and generating colored light patterns matching your mood! hi!Mood is being developed by A-Pole, a mobile application development studio which is creating innovative mobile apps to know more about the world around you and interact simply with everyday electronic objects. A hi!Mood prototype was hacked together by A-Pole during Hackitaly 2012 (more info). A-Pole is taking care of the electronic core, the design is Desall business! Desall is a crowdsourcing platform that, through design contests, connects companies and private clients with a worldwide community of creative talents. Every designer can sign up for free and participate. If you are a creative or a designer, we ask you to imagine and design the hi!Mood case: it must contain the controller board (maximum length and width of an Arduino Mega2560 PCB are 4 and 2.1 inches respectively), emit led patterns and play music through a speaker. If you manage to combine style with functionality, proposing a uniquely cool product design there is a big prize for you! Check the brief to know more about technical requirements, conditions and submission deadline. Link contest Good luck! May the best designer win. Acknowledgements: A-Pole, Arduino, Desall, Hackitaly, Openpicus, Stereomood.

Posted by Desall 5 years ago


Tire Tee

I want to make a tire tee for my softball-loving daughter. I saw the one in the link below and thought it would be an easy (and cheap) DIY. http://i44.tinypic.com/9tzol5.gif I'd want it to be portable, as her team is talking about practicing inside a school gym when it gets cold and this would be an excellent tool for hitting inside. My thought was to fill a bucket with concrete and stick the pole in it which would be my base. It looks like there's some PVC slipped over the pole with a pin/screw/bolt holding it at the height. If I want to get really fancy, I can drill multiple holes and adjust the height for each girl. The weight of the tire should provide enough resistance on its own. I want to limit any extra resistance from the tee as much as possible. The question I have is about the pivoting tire. What's the best way to set that up? I could have two pieces of PVC connected by a coupler and the tire would rest on the coupler. Or I could secure the the tire to the PVC in some way and when the batter hits it, the tire AND PVC rotates around the base pole. Any suggestions about this? I appreciate any insight! Thanks!

Posted by gharper1 4 years ago


Odds and Ends

This is a store to sell off some of my junk and to sell kits for my instructables: Steel wire: 2$ per yard for my thick wire and 1.50 for my thinner wire. 3/8 inch thick by 3' long steel pole: negotiable more to come pm me with orders

Posted by instructoguy 9 years ago


Cool Switch thing

My dad recently pulled a switch out from somewhere, and it looked cool, so I kept it. As far as I can tell it still works, and I believe it is Double pole double throw or something like that. I don't have any idea what to do with it though. D: Any ideas?

Posted by Rotten194 9 years ago


Corwin's birthday in the tower

We celebrated Corwin's birthday in the tower at Squid Labs yesterday, and, while up there, fixed up the flag poles and hung a pirate flag. I think it's admirable that we had at least 3 months of a "professional" looking fascade before our true colors bled through. Or, maybe it was just laziness...More pictures here.

Posted by ewilhelm 11 years ago


Circus Tent

Greetings again, Sorry I didn't photograph all I went through to create this miniature circus tent that is my stage for a movie I'm making. It was a difficult project as i work without any idea of how it would work. I just knew that I wanted it to look like what one would think a circus tent would look like. I can give descriptions of how I made it: The tent material is kite fabric that I bought online from kitebuilders.com. I also bought two rolls of double face tape from them. There is the cheap one that worked great for piecing the tent pieces together and one that costs about $16 that I used to add in the roping that ties fabric to the tent poles. For the tent main support poles I bought 2 3' pieces of 1/2" aluminum from Home Despot. Here's how it went together: I made two semi-circle pieces out of triangle pieces of red and yellow fabric. The main tent poles are embedded in a 1" piece of flake board. In order to hold up the tent while I pieced other parts to it I made two circles of 1/4" board with 1/2" holes drilled so they would slip over the aluminum pole and held them up with clamps until I got them to the proper height. The tent towers cam next. These were made with smaller triangle pieces to make a full circle. As the top of the tower would be holding up the entire structure so I used a 2" metal ring at the top. To attach I cut slices at the top and folded them over ring and used the double face tape to secure. So now I've got the two ends of the tent and the two towers but nothing is holding them together. And there is still the center section that has to be made. My next step was to add tent poles at the corners and other strategic positions. I jury rigged all connections with paper clamps, tape and what ever else I could thing of to hold the thing together long enough to force fit. From here I did a rough markup of where I thought the tie down roping should be. I then used some cotton rope (3/16" approx). Once again, simple slices in fabric turned under and held together with dbl face tape worked. I must say I worked through three different ways of doing this until I got something that worked. I left a lot of extra rope between the arcs so I could attach to the tent poles. These poles are just pieces of 5/8" dowels. The towers and the main tent pieces were also connected with dbl face tape. I made two circle frames out of 1/16" steel cable (@ 10 cents a foot) and used a swedge connector on each. This gave me a way to alternate tower and main connections that pull against the cable and not the fabric. Worked great. The last part was to fabricate pieces to add between the towers to complete the tent. You will notice that one side is completely open. That's were I will film from. The last thing I added was a large lazy-susan bearing so the entire stage can revolve as needed. I have also created a stage that fits inside the tent. And, lighting and back drops. I'll show those at a later date. There will be a YouTube video in a few days. I'm editing it right now.

Posted by kentek 10 years ago


Compass on a chip

Does anyone know what I need to have a Compass on a chip? The idea is for a horizontal ring of LEDs with the northern LED lit. If the ring turns, the light will chase towards the north most point on the ring. I've found single and dual pole compass chips, but I admit a lot of ignorance about chips in general. Anyone have a shopping list for such a project?

Posted by catalyst 9 years ago


Ice Alaska Venue

The World Ice Art Championships are held in the Ice Park in Fairbanks, Alaska. In 2009 the venue may move to North Pole, Alaska. Each team is provided with a site on a looping trail through the park. The sites are surrounded by small black spruce are double as R.V. parking in the summer. In 1999 I rented chainsaws from the blue bus for the competition.

Posted by jesse.hensel 10 years ago


Inflatable Fabrics

Out of curiosity - does anyone know what kind of fabric is used for inflatable structures... like inflatable kites? At the same time -- how is it sewn to hold pressure? I'm curious because earlier I was thinking why inflatable tents (for say: camping) are not too common. I mean, it seems like a good idea. No poles and such to worry about -- just inflate and go. Any thoughts?

Posted by trebuchet03 11 years ago


How to wire this solar cell?

Hey there! I'm a beginner in solarbots and I just acquired a couple of paper thin solar cells that are paper thin and about 5 by 5 cm. The backside seems to be plain paper or something. I already broke one! I can't figure out how to wire or solder it, that is where the plus and minus poles are. Can someone give me a hint? Thanks! Sebar

Posted by sebarr 6 years ago


A/C Wireing Problem

I need a A/C 120v wireing diagram that show the best way to wire a Router, Blower & Saw so would run as follows. (1)Router & Blower at the same time. (2)Saw & Blower at the same time. (3)All off at the same time,can this be done using a Double Pole Throw Switch ? if so PLEASE send wireing diagram. :o)

Posted by kngokngo 10 years ago


Platinum and fuel cells.

A couple of questions: 1) Does anybody know where to get cheap platinum wire (or platinum coated wire) 2) Does AC work better than DC for electrolysis because neither of the poles will corrode. 3) fuel cells produce around 2 volts, right? 4) Is there a cheaper alternative than platinum for converting hydrogen (and does it need the oxygen?) into water and electricity?

Posted by guyfrom7up 10 years ago


macePod - The procession project

Hi Art+Tech lovers Is it possible to track a simple object and calculate it's distance with an Arduino + (Arduino-)camera. I would use a simple tele lens so the distance between the camera and the object can range between 0.5 and 10 meters. The camera can be mounted on 2 servo motors for pan-tilt movement. Everything sits on top of a 2m pole, carried by a person.  And best wishes for 2016! Philippe

Posted by sysArt 2 years ago


Cambridge Science Festival

I hope this is not a repeat, but I have read that the Cambridge Science Festival will be held on March 10-20 in Cambridge, EnglandCambridge Science FestivalGrand Opening EventCarol Vorderman, the Vice-Chancellor and aliens from Dr Who will open the Festival and invite you to discover the world of Science.With activities exploring the South Pole to China, there's something to suit all ages. This does look like it is an event aimed mostly at the younger crowd, however.

Posted by Goodhart 10 years ago


Bamboo 'stanchions' base...?

I'm working on a set of stanchions for a 'Green' event, as we are expecting quite a few people lining up out front of our booth. I'm thinking about bamboo canes for the poles, with holes drilled near the top to allow 1" manila rope (or similar) through, but I'm not sure how to make them stand up, what to use for a base. Ideally it should be enviro-friendly, cheap, light and durable. That's not too much to ask, is it.....?

Posted by RustyCrow 7 years ago


Getting more power from a quartz clock movement

Using a transistor to boost the output from a quartz clock to drive a larger motor in steps. Is the idea sound what would I need? Having read a couple of instructables on equitorial drives, I found myself wondering why you couldn't just use a quartz clock movement to drive one? They don't produce much torque is the answer to that one. Why not? I took one appart to find out. The gear chain is very flimsy moulded polyethylene, or maybe nylon. the power comes from a tiny armature that makes 1 turn a second in 2 pulses the magnetic pulses are provided by a little cuircit board with the quartz ossilator on it. Here endeth my actual knowledge. My knowledge of electronics is minimal give me a good set of instructions and I can build it (unless its a joule thief but thats a different matter) but don't ask me how it works. My limited understanding of a transistor is if you put a small current or voltage across 2 pins you can get a bigger current or voltage to flow across one of them and the third, something like a relay. I was thinking if I took the out put from the quartz cuircuit that provides the magnetic pulses and used it to trigger a transistor to pulse a higher voltage and current through a small 3 pole motor kicking it around 1 pole per pulse. The motor I have a salvaged and rebuilt in an earlier instructable runs on 3V and draws 0.2A when not under load. the largest motor I have to hand is a big 7 pole one designed to power model planes or cars draws up to 15A on 7.2V the timer cuircuit for that one needed 3 Mosfet's in parralle so I'm guessing thats not possible.

Posted by Stan1y 4 years ago


Calculate magnet repulsive force?

I'm looking to make a "floating" model by insetting NdFeB rare-earth magnets with same poles facing so they repel. Now, magnet selling places specify the "pull" a magnet might have, say 1.2kg. What I would like to know is if the repel is equal in magnitude as the pull if two similar magnets are placed with same poles facing, is the force exerted 1.2kg and so I could float 1.2kg of stuff? Also, does stacking magnets double the attractive or repelling force, i.e. do two 1.2kg magnets stuck together lift 2.4kg of stuff, negating the small difference in distance of one magnet from the object? Is there a way to calculate the distance between two opposing magnets with a force applied. Does it follow the inverse cube rule? And if the stacking does work, do I also need an equal number of magnets on the other side for repelling, i.e. a stack of two 1.2kg magnets repels 2.4kg with one 1.2kg on the other side, or not? Does the magnet on the other side have to be the same force? Lots of questions but hoping someone can shed some light on this as I've not been able to find anything about it :-(

Posted by chiok 9 years ago


NEED ASSITANT ON A PROJECTTT!!!

Hi, I need major help. I am going to school for graphic design and I'm in a concept class right now. I have a final due on the perception of bumper cars... we have to build a 3-d model of our perceptions. My concept was that I felt real bad and nauseated the whole time. I was thinking of a circled platform that turns and a long pole almost that is attached to it with a round bowl at the end. so it looks like a shower head.

Posted by beachgurlx66 9 years ago


free standing pull up bar?

Hello. I need something like this: http://trapezerigging.com/PortablePullupBar/?gclid=CO_b9dCf6aMCFZL92AodJFCP2w That is, a free standing chin up bar that can be quickly mounted and dismounted. Somewhat more solid than that one if possible and... well, that one is extremely expensive for what it is. I've thought of building two Y-shaped vertical poles (maybe with galvanized pipes?) and an additional horizontal bar mounted on top of both. How would you do this? Thank you very much in advance.

Posted by Jatepola 7 years ago


Automatic Blind Opener Advice

Hi, I am thinking of putting together something that will able to automatically open and close my blinds as the darkness outside dictates. Ideally, I am hoping to attach the opening/closing pole to a DC Motor, which would be controlled by a light sensor. I was also toying with the idea of powering the system with a rechargeable 9V battery that could be topped up with a small solar panel attached to the window. Is this idea doable and, if so, any advice on parts and putting it together would be very much appreciated.

Posted by elsmandino 2 years ago


Centre drill without a lathe

Can anyone suggest a simple way to accurately drill a hole in the end of a dowel so that it's perfectly centred and parallel to the sides? I want to install hardware in two brush shafts to make a break-down pole that will support a tarp, and will fit in a car boot. If you imagine the brass hardware you see in a snooker cue, you'll get the idea. I could make a jig to hold, and align, the drill and dowel but it's a lot of fuss for a rig I probably won't ever use again.

Posted by barista 2 years ago


Please Help Electrical question 12v LED wiring.

So I have a black wire and a white wire coming in to where I have to hook up this LED transformer I know this is 110v. I saw the circuit breaker and it was double pole so I assumed it would be a 220v I ordered a transformer that could handle 110 and 220 but the colors are different. Is the transformer shown meant to have input wires connected to the hot? which ones to I put where? What goes to white here and what goes to black?

Posted by seanrforrest 3 years ago


home made MOT pork chop!

I have a crazy idea to make a transformer for a tesla coil useing two MOTs that are exactly the same, Then cutting them so you only have the 2 "E" core sections, Pull off the primary off one, flip the secondry so its out of phase, put the two cores together and clamp them so they cant move. put some extra shunts in to help limit current, hook up the primary to a variac and turn up the power slowly and test the arc. PORK CHOP! pole pig?

Posted by inductionheat! 8 years ago


kick out lamps with emp

Hid lamps (sodium and halide) are used for outdoor lighting they are sensitive to momentary power interruptions (even the smallest ones that dont make computers reboot) and mechanical stress (like beating the electrical pole with the lamp). they extinguish and need some minutes to cool down before they strike again i thnk it should be possible to kick out the lamps with emp (electro magntic pulse) as well. how strong pulse is needed to affect this kind of lamp ? is it possible to pack such energy in a portable device ?

Posted by 11010010110 9 years ago


Methods for winding coils

When I read up on the coils used in power generation, I found that the wire used is a type of magnet copper wire, and I bought 1600 feet of it on ebay. My only problem now is winding the coil. I figure I can do something like wrap it a few hundred times around a pole thats slightly larger than the rare earth disc magnets I got. Anyone have any suggestions? Btw, most of my information is adapted from normal rotating wind power generators.

Posted by fafnir665 10 years ago


AC motor speed controller for stereo turntable

Hello Brainiacs, I am wondering about salvaging a electric fan speed controller for my Vintage (1980's) Stereo turntable. I purchased a table from Europe and it ran on 50Hz 240v. But once I rewired the unit for 110v 60Hz it still ran too fast. It is a synchronous 24 pole motor driving a small pulley and belt system. I was told a speed controller would fix the issue by varying the voltage. True? Or if someone could come up with a schematic! ??? Any suggestions? 

Posted by bullit224 4 years ago


Axial Flux Wind Turbine

24 pole, 3 phase alternator. 18 coils of #20 wire 80 turns each, 6 coils in each phase connected in series, then wired 3 phases in star config. Put out lethal voltages at a very low rpm. Using N45 2" x 1" x 1/2" Neo Mags, two discs of 24 each attracting each other through coils. I need to know what the number of turns would be for #13 wire, same configuration for charging batteries.

Posted by dna11207 9 years ago


Need help with AC motor

What is a low cost way of vary a 2 pole ac motor? I know a vfd can handle the job, but I am looking for a way under $100. Also can someone help me out with some wiring. If I have a 120 VAC motor plugged into the wall, how would I reduce the voltage enough to run LEDs off the same supply wire? In other words, I only want to have 1 plug and run a motor and LEDs at the same time. Any help would be greatly appreciated.

Posted by cory_tripp 6 years ago


Pumping Water in the Arctic!

As a small background to the project I am working on: I am currently doing my Masters of Architecture in Copenhagen, and we are designing devices to bring on our expedition to the North Pole, and I am harnessing salt water to pump through salt water batteries. My question is then: What kind of pump do I need to pump water up 2 meters? I don't need much water coming up at once, just needs to be constant. I am also looking for the most energy efficient way of doing this, any know of something? Any help is much appreciated! :) Thanks, AD

Posted by arctic_devices 3 years ago


How can I project a night sky on a tent ceiling?

I'm getting married in September and I want a night sky projected on the tent at my wedding. I love the images from Harry Potter in the Great Hall (I know that it won't look exactly like it because of the tent angles). The tent is a 40'X40' open sided. I only care that the upper half is projected. The bottom edge surrounding the tent is going to have string lights wrapped in grapevines possibly with wisteria and amaranthus hanging from it. Does anyone have any ideas on how to make this work, and how to rig the projectors to the tent ceiling poles?

Posted by lpfan3217 6 years ago