arduino

I want to construct a motor drive to run a cycle . i have arduino and hbridge with but i require a circuit diagram to connect and control it?.i wat to know the working , connecting and controlling conceots of it

Asked by Aniesh T M 6 years ago


how do i anodize aluminum?

Thinking of anodizing some aluminum parts im making. Does it matter what kind of aluminum? I want a durable finish, resistant to corroding.

Asked by klunder_teach 8 years ago


Where can I find strong ring magnets?

I want to make a magnetic levitated suspension. I am not sure it will work as I expected. But I need em' ...... Somebody please tell me where I can find em' I don't wanna spend so much for those mags neither do I want to damage costly things to take those mags outta them.... I thought of using electro magnetism....but i am still learning more about it and that procedure is damn expensive Please help

Asked by SravanamE 2 years ago


how to make magnetic and fluid resistance based exercise cycle?

Make a stationary exercise cycle with fine control on resistance to rotation

Asked by anil.gadgil 8 years ago


bicycle mods

Saw bicycle cart mod,interesting idea.how do i put two wheels on the front of my bike?

Posted by mr.a.rice 6 years ago


Video, Awesome

Check Out my sweet Video. http://ca.youtube.com/watch?v=CxmNxtDo4hg&feature=user&fmt=6

Posted by vanpaun 9 years ago


Self charging an electric bike?

Hi all, I am always amazed at the ingenuity here and after many years of being fascinated I would like to ask my first question.  I'm thinking of getting or converting/building an electric cycle.  I've been told by local dealers that none except the very expensive have a recharge facility for sat when you go downhill or are freewheeling,  That seems a waste to me so I am thinking ... why not buy a used wheel with a hub motor and fit it at the front wheel and that raises the following questions in my mind ... Can hub motors be used in reverse as generators?   Would the output be speed (rpm) dependent and if so then if said cycle has say a 36 volt system would it only charge the battery if the 'generator' is producing 36v or close to? If so would it be better to find perhaps a 24v hub motor to use as a generator and charge the battery via a variable input, 36v output step-up? I appreciate it will be less than 100% efficient when both using electric at the motor and charging at the 'generator' but would anyone have any idea how inefficient?  I'm fit enough to cycle on the flat but would appreciate help on the hills!! I assume I will need a diode or similar ... does anyone know where I can find a suitable circuit diagram Lots of questions I know ... sorry. David

Asked by HRobinson 2 years ago


deep cycle batteries

Can we and how do we convert a normal lead acid battery into a deep cycle battery?

Posted by sankyc 9 years ago


know of any small scale Rankine cycle engines that are classroom safe for a presentation?

Have a school presentation on a thermodynamic process and would like to present a Rankine Cycle but i havent been able to find one that i can build and run within a classroom just looking for a design or directions, even a video that i can use to build one

Asked by SLC Student 6 years ago


I would like to know what motor should i use to run an electric cycle of a total load of about 50kgs? ?

It Is a solar powered vehicle. I would like to know the exact specifications of the motor which i can use it to run a cycle with a net load of 50kgs.

Asked by pramodh kiranv 3 years ago


Automatic Potentiometer

Hi!  i need and automatic potentiometer it has to works max 5v i thouhgt about that and i can make it manually but it's to big and to weird  i want to ask you a form to make  it whit electronic components or a component ho can makes it i want to make a motor acelerates and desacelerates whith a soft curve and if its posible put the time of the cycle (example 40 seconds acelerat.... and .. desaceler...."cycle" or similar) Thanks Sorry for my bad english! Thanks! 

Posted by labalavermella 6 years ago


Timing system for 2 actuators

Hello all! I have 2x 12v actuators with 2 wires. I need to have both of them (at the same time) extend all the way and stay for 30 minutes and then retract completely for 30 minutes and cycle like this. What would be the simplest way for me to go about this? Cheers!

Posted by sandman420 8 years ago


Roland Big Boy ball trailer hitch?

I have one of the above trailers, the ball hitch should be secured to the cycle saddle clamp, however I am unable to re sucure the clamp tight enough to stop the saddle rotating and the saddle dropping down. I have seen a clamp which secures to the actual seat post and the ball hitch is secured to that, i am unable to locate such a clamp, I am sure someone will know or can help me find this item. I am having to use my trailer as a hand cart at present for going to the allotment each day. Please help if you can. Thank you Joanna

Asked by 9 years ago


what is the cheapest way to make this?

What is the cheapest way to make a bicycle kart? see me and my mom are very poor "kinda" the money is tight here and i would like to make something cool like this but heres what i have to make one this is ALL i have i dont have anything else meaning this is all the parts and tools i have 1 ten speed mountain bike,1 weed eater "working",2 planks of wood "the legenth of my arm,1 pair of screwdrivers.gasoline "for the engine to run",1 spare bicycle tire,1 spare and rusty bicycle chain,wire plyers,1 hammer,i only have 10 dollars and no im not allowed to get a soldering iron/gun so if theres anything that you know of on how to make this please let me know.

Asked by wizard744 8 years ago


What is the duty cycle of a welder? Answered

Is a 6% duty cycle good? Bad? Terrible? Worth blowing up?

Asked by bowmaster 8 years ago


fridge cycle logger

Hello all, I'd like to know how efficient my fridge is. To do this, I need to have a record of the on/off cycling that the fridge does: I need to know how frequently it cycles and how long it stays on for. Does anyone know if this gizmo exists? (in the UK) If not, how would I go about making one? Thanks, mm

Posted by marquee.moon 6 years ago


Tron™ Light Cycle is for sell

I was just checking out Hammacher Schlemmer and I saw this. I can't believe the technology we have today. If anyone has $55,000 and is willing to spend it on anything, this is for you.

Posted by Dr. Pepper 7 years ago


Global Warming

Okay I'm gonna open the global warming can o'worms. what does everyone think about that stuff? Cycle of the earth? Change in atmosphere? what is it? BS or the current greatest problem facing society?

Posted by wingman246 10 years ago


What is the motorcycle of your dreams? Price is no object.

If money was no object, what motorcycle(s) would you want to own? For me it would have to be a Vincent Rapide, or a Brough Superior. Also, I'd like to own some historic bikes, like ones that belonged to : Pancho Villa, Evel Knievel, Lawrence of Arabia, Elvis, Bob Dylan, Steve McQueen, or maybe Peter Fonda's Captain America.

Posted by skunkbait 9 years ago


would putting a lead acid battery in a backpack damage it?

Im trying to find a relatively inexpensive way to run my laptop off of something that will fit in my backpack and will be something that i can carry. so far i found out that i need a deep cycle or marine battery for my inverter, and an enclosure to make sure i dont get sulfuric acid everywhere, but all of the research ive found were about home backup systems which are stationary. would putting a lead acid battery in a backpack and carrying it around damage it or make it leak? i also found a lot of lithium ion batteries on amazon around 700 to 1600 mah for $.50 - $1... the sellers that sell them for that much have good ratings, is there something wrong with these, or did i hit a goldmine? example: http://www.amazon.com/Olympus-LI-30B-Rechargeable-Battery-Digital/dp/B00062WV6I/ref=sr_1_20?ie=UTF8&s=electronics&qid=1273381311&sr=1-20   if lead acid doesn't work (or the lithium ion), would 10 nimh d batteries work?

Asked by the judge 7 years ago


Wheelchair Wheels

I'm a wheelchair user and I would like to change the side wheels and rims with a bike  geared wheel and push handles.   I need someone, brighter than me, to  work out how to combine the crankshaft and back wheel into one unit? If this could be done, I would extend the pedal shaft to become handles which I could push with my arms. Don't know if that is clear.. I've tried to add an image here, but Instuctables just not uploading anything!!! If you have any idea about the wheel idea, I would be grateful to hear? Many thanks Richard

Posted by DickyMac 2 years ago


Wind Powered Quad-Cart

I haven't seen anything this on here so I thought I'd step up. Engineers (or anyone who fancies themselves A DIYer) I found a few days back I little some very interesting Wind Powered Rides...six-or-seven-ways-wind-powers-vehicles OK so we know it CAN be done, but can it be done by a DIYer? OK here's my concept, Design and shape are optional but basic components are such: Take a pair of multi-speed Bicycles, their gearing will be the basic propulsion for this vehicle. Take one of the "bikes" and hook up a prop where the pedals "where" and set the wheel output to be higher then the prop speed, this should take care of the foreward movement once going. Now for the initial starting power (Bike 2), this can either be by petal, or by electric (solar/battery- up to you) But the basis for this whole thing is simple energy transfer, if the moving air over the prop causes the drive wheels to go, and by having them geared higher, the vehicle SHOULD move faster the faster you go ..Right? Can I get some math to back this up? it sounds like it would work.

Posted by Green_Primus 9 years ago


Where can i find a British Standard Cycle Die (9.35mm diameter, 26TPI) in the UK

Im after a British Standard Cycle Die (9.35mm diameter, 26TPI) to thread a steel stub axel so it will fit inside a bike hub like a spindle (with cones from an old spindle) if anyone knows where i can find one of these please get in touch! :D PS i live in the UK

Asked by ooda55 7 years ago


Bicycle Trailer

Hi everyone I am going to start buildin a cycle (bike) trailer but is there a law what says it can't be bigger then.......? Please? Thank you  :-)  From Kris in England 

Posted by prison.whittaker 3 years ago


555 pwm AND frequency controllable? Answered

Hello, I've been breaking my head on this for a while now, and still couldn't find a correct solution for this. I want to be able to adjust the duty cycle (pulse width) with one potentiometer, and the frequency with another potentiometer, using a 555 timer. Adjusting the frequency shouldn't change the duty cycle! (which is the problem in All of the circuits I find online). This is an example of a circuit I find online, many of the circuits look just like this one (see picture) Now, the problem is that when you increase the resistance of the potentiometer for adjusting the frequency, that makes sure you can never get 0% or 100% duty cycle anymore! or not even close to that. It's because increasing that resistance, also decreases the 'discharging current' of the capacitor, so it will also increase the discharging time when that's not wanted. Without R2 it works perfectly, from 0% to 100% duty-cycle; but with the frequency potentiometer it all gets messed up. It's a little difficult to explain, I'll try it with another example :) To get 0% duty-cycle (or something close to that, like 10%), you'll need to make sure the path for Discharging the capacitor goes near 0Ohm. Increasing the potentiometer for the frequency makes that impossible because it's in series with the capacitor's charging and discharging circuit. So that would also increase the discharging time while I don't want that. When the resistance of the frequency potentiometer increases, the duty-cycle gets variable between just something like 45% and 55% (example) so that's not good. Is there any way do do this? :/ Thanks in advance, Elecotrials

Asked by DELETED_Electorials 6 years ago


Peeponics doggy urine nutrient cycle system

Hi, I have a dog at home who uses a litter tray. It's basically a large plastic water run off tray with some AstroTurf. Currently, I have a pump that draws off liquids and deposits them into an empty soda bottle, which I flush down the toilet. But I was wondering if there is an easy way to convert the urine into nitrates which I could use in an aquaponics, or peeponics, system? Possibly using an attractive under water garden in a 25 gallon fish tank?

Posted by jmlidea 6 years ago


Powering 12v LEDs from 12v Deep Cycle Battery

Hey all, I'm trying to power some 3528 LED strands to hang from a shade structure I have outside. I picked up a 115 Ah 12v deep cycle marine battery, but I just wanted to make sure I could wire them directly to a distribution block without blowing anything up. The strands draw 6A of current so I was going to find the closest fuse to that value (10A?) to prevent any chance of overpowering the control boxes. Does this seem correct? Image shows roughly what I'm trying to do (black boxes around red wire are fuses, 1-3 are the LED control modules) Greatly appreciate any help!

Posted by synaptech 4 years ago


Amphibious bike design?

So I have an idea for an amphibious bike design and I have a very low budget, but im not sure if this basic design will even work

Asked by masterbuilder 7 years ago


Can I use fuel prepared for a 2 cycle engine in a 4 cycle engine? Answered

I wonder if it is safe to use the fuel prepared with the 2 cycle engine oil in a 4 cycle engine lawnmower.

Asked by blkhawk 7 years ago


Are there small car-like motors out there?

I've been wanting to teach myself more about mechanics, and I want to work on a rebuild project. There are problems though: my workshop is small, I don't have a shop-crane, and there's not a lot of money to put into it. I was wondering If there are any motors that are just like that of a car's that are small, cheap, and readily available. I've taken apart a few two- and four- stroke engines, nothing more than a lawnmower. I want to self-educate myself more. Thanks.

Asked by DIY Emilio 5 years ago


Cyclist attacks again...

Uh this is annoying after last year when there were attacks on cyclists made by motorists I've been thinking it better not happen again this year, well my fears turn out to be well founded, just as our bike month kicks off so does the war on cyclists...Coming down the hill towards work, going well over the posted speed limit of 30mph a boy racer in a vauxhall corsa boxed me in and tried to run me in to parked cars, i managed to get in front of him and out from behind the parked cars, he then went on the wrong side of the road and overtook me, only to try and brake check me, I was absolutely incensed he was looking me right in the eye through the rear view mirror, He got away at the junction at the bottom of the hill because the light was green and he was going straight on, I was going to take out his wingmirror but nay he didn't stop, next time I see the car I'll get his liscence plate numbers, then report his car as stolen... because he'd get off scott free for attacking me like that, despite having endangered my life and broken the speed limit by a lot more than I did...

Posted by killerjackalope 9 years ago


I wish to make electricity with my cycle (can be made stationary) - can't afford to buy ANYTHING, am that poor. Help.?

I intend to make my cycle a stationary one so that I might exercise at home. With that, I hope to create electricity as well (someday sell electricity too hopefully :D ) Of course I do not have much - and I need help to create the same without buying a thing preferably. Help please. Also suggest how I could store the same, just in case I successfully make some.

Asked by Iyer2711 9 years ago


50% duty cycle circuit

Hello i want to make 50% duty cycle circuit frequency is no problem : any frequency thanks

Posted by aymanok 2 years ago


Railbiking. Anyone built one?

I heard an interview today with author William Least Heat-Moon.  In his latest book, he meets a man who has built an outrigger bicycle he calls a "Railcycle", which he uses to ride on disused railroad tracks all over the world. Curious, I did some searching, and found a number of places on the web where people are talking about this, but they all seem outdated. Bentley Railbikes Railbike Tours Homebuilt Railbike Has anyone else heard of this practice?  Do you know of anyone currently making and riding such contraptions?  Do you have one of your own?

Posted by yoyology 7 years ago


Cycling activity, need help?

Next week, I will have a cycling activity, and I want to buy cycling shorts for my girl friend. Has any one tried http://www.outbackbikers.com/? It seems very cheap, but I am afraid of the bad quality.

Asked by Hughes Jessica 5 years ago


PET. (plastic bottles) Are there any other methods for colouring PET. (Please NOT Sharpies) Answered

I want to find out any other ways of colouring plastic besides sharpies. I want to use heat for shaping and I find sharpies don't provide a consistant covering for my needs. Please list any you know of for me to try. Looking foreward for your replies.

Asked by craftyv 7 years ago


To all Bike riders/cyclists/commuters: What do you ride?

I ride a 2000 MGX DxR [yes, the crappy, chinese, walmart version] to work every day, road commuting. I also ride it off-road, singletrack, streams, washboards, you-name-it-I've-ridden-it, with no issues. thus far, I have put around 19,000 miles on it, all told. totally original [otherthan tubes, tires, chain, cassette, brakes, etc] parts, still weighs 38 pounds. Anybody else ride something as cheap and inappropriate as commuter? What do you ride every day? any bikes you'd LOVE to have? Any funny bike stories? Cheers,    B.E. 'Brick' Montgomery 

Posted by Hazzard2theworld911 5 years ago


difference between marine and normal oil

I need to mix gasoline with 2-cycle oil for my 2-stroke chainsaw and i only have marine 2-cycle oil. is it ok if i use this or do i need to use regular 2-cycle oil?

Asked by Sun Gear 7 years ago


How to make one big battery out of several batteries (car/motorcyle/deep cycle), for a sound system

Hey everybody, I need your help on building a single battery out of several smaller batteries for a sound system in a particular environment that forbids the use of a fuel-powered generator and where electrical networks to plug into are absent. For now I'm just researching various portable batteries and think deep cycle ones are probably most adapted to the needs of a sound system running for 8-12 hours, but the only working example I've heard of so far is made up of several motorcycle batteries. I'm really starting from scratch and reviewing all my old electronics classes which I've never so far had to put into use, so bear with me :) I'm really keen on learning. As an indication, the sound system will be small with two high/mid built-in amplifier speakers and a woofer. Probably will need to run a few lights/lasers, that sort of thing as well, but that'll be a bonus. Thanks in advance

Posted by Objektiv 6 months ago


transponder reader?

I need a small reader built to read the chips we use for cycling.

Asked by katiecannon 6 years ago


i want to increase my cycles speed using gears .what i had to do for that?

I want to increase my cycles speed using gears.what i had to do for that?

Asked by 9 years ago



How powerful does a motor cycle motop have to be to pick up a man on a helecopt er chair?

How powerful does a motor cycle motor have to be to pick up a man on a helecopter chair?

Asked by dasdew2 8 years ago


Running a 555 timer? Answered

So, I have this program that I got online that simulates a 555-timer. Basically, if you want it to put out X Hz in Astable mode, it'll tell you which capacitors to use and stuff. It'll also show you how you can modify the duty cycle.  I'm wondering if anyone can explain something to me: When I run the program in astable mode, the duty cycle must be above 50%. I want to power an LED that flashes very briefly, but has a relatively large interval of being off until if flashes again. Something more along the lines of a duty cycle of maybe 5%-20%.  First, could you explain why the program constrains the value like this? Is it because the 555 can't run at a duty cycle that isn't greater than 50%? If that is the case, why can't it? Second, if I can't run it like that, what would you propose I do to power the LED in the manner I described? btw, if you want the program follow this link: http://clarkson-uk.com/555-timer/ It's actually a pretty cool program! :D

Asked by tylervitale 6 years ago



Do you think this battery is sutible and of good quality? Answered

I am trying to decide what battery to get for my 2 solar panels 45 watts in total i have gathered that  i need a deep cycle i need it to charge up 5 days and use it on the week end. any advice and help would be highly appropriated  http://cgi.ebay.co.uk/12V-85AH-QUALITY-LEISURE-BATTERY-NEW-4-YR-GTEE-/180687142468?_trksid=p5197.m7&_trkparms=algo%3DLVI%26itu%3DUCI%26otn%3D2%26po%3DLVI%26ps%3D63%26clkid%3D971368555902802126#ht_1304wt_1139

Asked by Daniel Deacon 6 years ago


What to do with a 45 watt solar panel?

I have 2 solar panels 1 is (15w) and the other is (30w) they both produce around 3 amps together in good wether Anyone have some good ideas on what to power with it. it is charging up a 17ah battery

Asked by Daniel Deacon 6 years ago


12 volt Charge controller (solar)?

Hi i am wondering how to go about building a solar charge regulator i need some help and passably schematics i have 2 broken charge controllers  the parts i have salvaged  11A20YR, LM324. IC x2 11YRD g4, CD40106BM. X2 IC IRF3205, MT 1D4H. X6 MOS-FET ALJ, D882, P63. X2 TRANSISTOR X16, GF1200, YELLOW THING X2 C1115, JC817,KENTC, X2 few other parts that are on the board

Asked by Daniel Deacon 6 years ago



Cycling Desktop Backgrounds

I would like to be able to have an automatically cycling desktop background, like the option on Mac OS X. I'm running Windows XP. Are there any utilities or something available to do this? No, I don't want to create a GIF file of the different wallpapers, that would be enormous.

Posted by CameronSS 9 years ago