Running LEDs?

Quick question, really. Anyone know if it's possible to run LEDs in series straight off of wall current?  For instance, lets say I have 60 2v LEDs connected in series. Could I just put 120 VAC into them (with the proper resistor of course) and they'd light up with no problem?

Question by tylervitale   |  last reply


running light? Answered

I want to make a simple running/chasing light with a pic16f84a i need the code and the circuit

Question by robot1398   |  last reply


Running applications.

 IF you want to run applications that are not enabled by defult, right-click and select 'run as administrator' that's it. it's that simple. you still can't install anything but you can play most games/ run most apps with this simple trick. Have fun =P

Topic by pbmoose   |  last reply


Free running

I would like to see some instructables on parkour and free running as it is a fast growing sport and very good for you.

Topic by The Fallen Bumble Bee   |  last reply


Free running

I would like to see some instructables on parkour and free running as it is a fast growing sport and very good for you.

Topic by The Fallen Bumble Bee   |  last reply


The Tweed Run

The Tweed Run is about as much fun as you can have in wool knickers. Looks like London was a great time. Can't wait to see how Toronto and New York turn out!  http://tweedrun.com/

Topic by Culturespy 


Barefoot Running

Anybody ever run barefoot (on pavement)?  I did it in college (5 years ago) a lot on the grass playing soccer and rugby. I started running on pavement (with shoes) afterward and was killed by knee aches and achilles tendon problems. I connected the injuries to the pavement, not the shoes. Now I hear that maybe millions of years of evolution actually makes humans really good at running without shoes, so I decided to give it a go unshod.  Went almost a mile today on a pavement track, and it was a bizarre experience. The motions and muscle movements were all completely different. But I liked it. My feet and legs are very strong so I didn't have any problems with weak feet. It was just different motions.  Anybody else?

Topic by marcward86   |  last reply


Could someone tell me, how to run this motor (picture)???

Hello ... on the picture you can see a motor, that has 4 pins. I would like to make it run, but I don't know how. I don't know, if it's a brushless or brushed motor. There are no number, no part number ... and I think = I'm not sure, there is no magnet as well (I made a test with needle, but it didn't attract the needle). In my poor knowledge ... normal brushed motor has 2 pins, and all the brushless I saw, had 3 pins. but  I never saw a 4 pin motor. Any ideas ??? Thank you (in advance) for your help.

Question by zholy   |  last reply


5 KW Permanent magnetic generator

What horse power 24v DC motor do i need to run 5 kw permanent magnetic generator at 400 RPM? if I dont want to use wind turbine to run it.

Topic by azizmak   |  last reply


Scores for "Dinosaur Run"

Still don't know how to play Dinosaur run? Click here. This is a page for posting highscores.

Topic by Luigi Pizzolito   |  last reply


Increase running speed

I don't run very much. I never was all that good at it. Lately, though, I have found the need to improve that ability, specifically my endurance at speed. I can slowly jog a mile, sure, but haulin'-ass-away-from-an-amgry-man-with-a-knife-speeds don't last much longer than thirty yards, if that. I'd like to improve my overall speed if possible, and especially increase the distance that I can cover flat-out before I keel over. I'm not going to be running a marathon anytime soon, but I'd like to be able to get farther than average, as fast as possible, on demand. Any tips for training or proper form? I live at roughly 5400 feet, but I'm just a short drive away from 14,000-foot peaks. I would also like to improve my off-the-line times--in other words, acceleration. If I were to need to run between ten and twenty-five yards, I can do that at my top speed as is, but that speed is not as fast as it could be. I'm generally not even up to full speed until eight or ten yards past the line. Suggestions?

Topic by Rishnai   |  last reply


Rickshaw Run 08!

While most of us here at Instructables are recovering from the holidays here in Alameda, one of our coders, Rachel, is off on an insane adventure. She and six others are in a rally race across India in motorized rickshaws. They hit the road on December 31 and will be traveling 2,500 miles over the next couple weeks.To keep us all up to date on her adventures, Rachel has a blog about the event complete with a map to show where they currently are. You should check it out at: www.rickshawrun08.comGo, Rachel!FYI, Rachel's rocking the white hat and jacket in the second picture and is on the right in the third.

Topic by fungus amungus   |  last reply


run leopard on xp?

Can i run leopard on my dual core XP amd machine and how

Question by 10cats   |  last reply


Knex Marble Run

Here's something I made recently. Thought I'd share it on instructables. Subscribe to My Channel http://www.youtube.com/user/Coaster105 for updates on more Marble Runs.

Topic by coaster105   |  last reply


Running a laser pointer? Answered

For a school project, I am running a 4.5 volt, 0.03 amp laser pointer. I need to run it from a 24v power supple. I have tried 1/4 watt resistors, and they ended up smoking. I don't know how to determine what components I need between the + power and the +lead of the laser pointer. Any assistance would be appreciated.

Question by dkop1   |  last reply


Server Running Slow

Over the last few days I've noticed that Instructables.com is running VERY slow. I usually can open 20 or more tabs at a time on the server but lately I can only open 1 or 2. I hope that other people have noticed this and it can get fixed soon!                                                      Thanks,                                                            Jake

Topic by Jakeg   |  last reply


Run a generator with a motor

I have a 1.5kva gas engine generator but the engine part broke down. I opened it up to see if it can be fixed but the cam and the piston were shredded to pieces. I tried to run the generator part to see if it still works by hooking it up to an angle grinder via pulleys and a belt. It did work but the grinder only lasted half an hour. What better ways can i run this generator off of? What motor can i use to take the place of that broken engine? The engine speed is 3600 rpm.

Topic by Servantwind   |  last reply


Knex is running a contest!

Hey gang,  K'nex is running a great contest for their younger fans. It's limited to ages 5-12 but there are some great prizes. Even if you are older than 12 it would be great to help a younger friend or family member pull off a winning project. We'd love to have an Instructables member take home the grand prize!  http://www.knex.com/club/becoming_knexpert.php 

Topic by Culturespy   |  last reply


Running motorbike on hydrogen

Where I've to connect the output of hho gas generator to my motorbike? I've no experience in mechanics, but I know is very simple to connect the hydrogen gas output tube to some part of my motorbike to run the motorbike on hho. The question is... where? If you answer to my that, I'll make an instructable about the process.

Topic by FelixSP   |  last reply


Running 1w leds?

Hey Guys,  Can anyone tell me how many 1w leds i would be able to run off 4 aa batteries (either 6v 2a or 3v 4a). I dont really know what configuration i would need of the batteries or leds. I would love it if anyone could draw up a simple circuit for me that describes it. Thanks in advance. -Prickly Potato

Question by SA-DIY   |  last reply


Firefox is Run By Robots

Firefox is controlled by robots. This is an easter egg in firefox. Just type in about:robots in firefox. Update: when you press try again, a new button appears that says please do not press this again, if you press again, there is no more button.

Topic by JellyWoo   |  last reply


Capasitive start and run.?

I have build this circuit and works great for a 12v pc fan on the bench for PWM. When i hooked this into my ATX power supply to regulate the fan speed the fan doesn't like to run unless i touch some portion of the pcb i build the circuit on. I spliced the wires from the ATX power supply into the PWM circuit, then out of the PWM circuit back to the fan. I guess its a  capactive issue. What could be the fix for this? The other An EE suggested i add several diodes inline to slow the fan down....hhmm maybe

Question by WWC   |  last reply


Facebook login ...not run !

Hi, are some days that pressing the button "FBlogin" is no longer authenticated using my FB account, I tried to log in having opened another tab on FB but nothing changes. I normally use Chrome, but I tried with Explorer and Firefox, on Windows 7 and XP ... but it is still the same problem. Blame for the crisis here in Italy? :-)

Topic by pellyx 


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

Question by tylervitale   |  last reply


pulsejet night run

This is the simplest pulsejet you could make and costs only Rs.110 and has got a good throttling range,which you could see in the video..No need to strain much to start this engine it starts in a single attempt. this has really got good thrust,tried to show an cloth near it but i was not able to do it,so much of force from the exhaust pipe..one day i will hook it up to a scale and find out the real thrust.. note: at the end when i tried to show a cardboard the engine got few holes in the welded parts..  

Topic by ganuganu   |  last reply


Ultimate Marble Run... from wood

I saw this on hackaday and thought I'd post it here for anyone that doesn't follow that site. This is really incredible if you like woodwork and marble run. http://woodgears.ca/marbles/run.html Explaining each piece:

Topic by Jayefuu   |  last reply



Born to Run the Oakland Marathon

On Sunday, I ran the Oakland Marathon, finishing in 3:54:29, and placing 215th out of 945 runners.  I know it's cliche, but I read Born to Run and got inspired me to run a marathon.  It's the best book I've read in years:  the characters (all real people!) are fascinating, the setting and story are fantastic, and it just made me want to get out and go.  Halfway through the book, I decided to run a few miles to the grocery store in the rain just to run out back, not because I needed anything. Prior to reading Born to Run, I had been running a 2-3 miles twice a week to vary my preferred morning exercise routine of biking or swimming (the kitesurfing season hasn't really started yet).  Running was something I did if I couldn't get to a pool or didn't have the time for a long enough bike ride; it was exercise I did while traveling and when there were no better options.  Born to Run made me question that assumption, and I decided to see how longer runs would feel. Over a year ago I read "You Walk Wrong", a New York Magazine article on going barefoot.  It convinced me that I should be able to go unshod, or at least with minimally foot coverings.  Why would 30 years of running shoe development be able to produce better results than millions of years of foot evolution?  So I bought some Vibram Five Fingers  to protect my delicate soles, and had been doing lots of hiking and a bit of running.  The difference between running in running shoes and Vibram Five Fingers was profound for me.  In running shoes, I typically stopped running because my knees and hips hurt, not because I was exhausted.  The Vibrams forced me to take smaller, faster strides without heel strikes, and suddenly I was getting closer and closer to being able to run long enough to catch exhaustion without any joint pain.  The concept of going barefoot was initially tough because of my flat feet and overpronation, and the possibility of re-dislocating a kneecap. I never went anywhere barefoot, and after I initially dislocated my kneecap in 2000, I was told by a sports medicine doctor that I should never walk without the aid of custom orthotics in my shoes.  However, barefoot websites and forums are full of stories about people's arches coming back, and how kids raised without shoes never have flat feet.  Amazingly, it's all worked perfectly for me.  I now run without my orthotics without any knee pain, and my arches appear to have (re?)formed.  After hopping out of the pool, I always inspect my wet footprints, and they now have distinct arches.  I wish I had taken photographs every day to plot progress. With the characters and race in Born to Run still fresh in my mind, I looked for nearby races to give myself some motivation and something to train for.  When I discovered that Oakland was holding its first marathon in 25 years, and that the route literally went through my neighborhood, I immediately signed up for the half-marathon and convinced Christy to do the same.  I researched training regiments online, and discovered many were 4 and 5 month plans; since I had 50 days before the race, I decided simply to run longer and longer distances at a comfortable pace, and not worry about a rigid structure.  I ran most of my miles on trails in the Oakland hills, and some on the streets, but all of them in my Vibrams.  During a practice run on the half-marathon course three weeks before the race, I completed the half in less than my target time for two hours and felt so good that I opted to do the full marathon. In the marathon, I ran with GEICO-sponsored pacers aiming for a 3:50:00 time (8:46 miles on the flats, and slower miles in the hills; course elevation PDF here).  Of the three pacers, one was running his 34th marathon, and the other two were ultra-marathoners training for a 200 mile race from Calistoga to Santa Cruz; their normal weekend run was 50 miles, so a marathon was like taking a break.  Running in a group is awesome and way better than running by myself listening to audio books.  On multiple occasions, I imagined that we were the hunters of a tribe out running down game -- water stations every couple of miles broke the illusion, but I still eagerly grabbed cups, and the community support was tremendous.  There were bands, drummers, DJs, and gospel choirs making music along the route; families with full brunch buffets setup in their front yards offering all the runners fresh fruit and homemade baked goods; and many people just thanking us for running in Oakland.  The second image shows all my runs in the 50 days leading up to the marathon.  The first 5-mile run on the chart was the longest I had ever run at that point.  While I was coming from something of a limited endurance background (I've biked 135 miles on a tandem from Boston to Provincetown in a single day), I didn't really know my limit.  At mile 23 of the marathon, I finally caught up to exhaustion, and fell behind the pace group.  The last three miles were painful, but in the last quarter mile, I couldn't stop grinning and felt like I might laugh and cry at the same time.  When it was over, I just wanted to sit down. I was aiming for a sub-4-hour marathon, and I'm really proud to have done that on my first try.  Everyone made fun of me for walking like a zombie the next day at work, and I have some pretty large blood blisters on my feet, but nothing that won't disappear in under a week.  Go and read Born to Run, it might inspire you, too. Christy says: I'd always had to run as cross-training for other sports (I swam competitively for 13 years) and ran when I needed quick exercise, but hated it - my joints hurt, and it just wasn't fun.  I was a distance swimmer and can hike nearly forever, but could literally swim farther than I could (or would) run.  The most I'd ever run before was about 4 miles.   I got my Vibrams with Eric, and really enjoyed hiking with them on my feet.  I hadn't run in nearly a year and a half (pregnancy loosens the joints, which made running feel even worse) so when Eric announced he was signing up to run 13 miles I was dubious.  However, I read Born to Run and was suitably inspired - I was in good cardio shape from swimming and stationary biking, and would happily hike 13 miles, so why couldn't I run that far?  I decided to go out for a 5k jog to see what running felt like in my Vibrams. Long story short, I accidentally ran 6 miles, stopping not due to fatigue or joint injury but because of a blister from a poorly-adjusted shoe strap.  I signed up for the half marathon that evening, and started taking increasingly pleasant runs through the parks and across the city.  I ran the half-marathon course with Corvidae in her jog stroller, stopping to feed her periodically.  Eric finished while I was on mile 8, so he backtracked along the course and met us at mile 10, by which time she was thoroughly done with this stroller nonsense and had migrated to the sling.  I left the two of them to their own devices and jogged the rest of the way to the finish, about 3:25 after I started in the morning.  Not terribly speedy, even given the breaks!  The next day the bottoms of my feet were sore, and one of my Achilles tendons was a bit inflamed - I'd describe it as having overused my springs - but even though I was limping, my muscles were still in good shape. My pace is still quite slow (I ran the half-marathon in 2:42, for roughly 12:26 mile splits) but it's frighteningly consistent - I negative split most of the race, and at the end discovered I still had plenty of energy to sprint past a dozen exhausted runners.  Clearly I didn't run fast enough or far enough, but I was specifically setting a pace I felt able to maintain indefinitely.  The weak link is still my feet!  While I had plenty of muscle and energy left at the end of the race, the bottoms of my feet were tired from use - more practice is necessary to balance out years of shoe-wearing.  However, I recovered much more quickly this time, and was able to run again by Tuesday morning.  No zombie shuffle for me!  Of course, this means next time I'll be running the marathon, and at a faster pace!

Topic by ewilhelm   |  last reply




How do I train for a marathon? Answered

How do I train for a marathon or half-marathon? Nutrition? Schedule? After successfully completing a marathon, what about maintenance so I can run next year's marathon?

Question by guerrilla   |  last reply


Does anyone know how to program a repetative motion robot (see description)?

This is mostly out of a theory and curiosity, but if I were to make a robotic arm and I wanted to make it do repetativve motions, how would I make It recognize/remember the movments and how would I make it perform them. It would be a direct teaching unit (meaning I would move the robot and it would remember the movments) so how would I make it run or hook it up to a computer and how would I program it with the direct teaching. If this impossible or extremeny difficult, please recommend a different technique. Please give me good, detailed instructions.

Question by    |  last reply


How do you execute multiples functions simultaneously?

Hi! Got a programming question today. How would I run multiple functions/execute commands at the same time? What I'm basically getting at here relates to games. Lets say you have a game where you have 2 tanks. An enemy comes into view, they both turn and fire, but at the same time. In the code I've been used to writing, it seems that if you were to achieve them doing this, commands to turn and to fire would need to be executed at the same time. I suppose you could write a function that would govern all of the motion for the game, but that seems like it might get bulky quickly, especially if its a big game. How would you  do this? Thanks for answering! If you answer specifically in one programming language or another thats ok, b/c I'm familiar with several! Just need something to set me on the right track here!

Question by transistorguy   |  last reply


What OS are you running?

What operating system are you running right now? Im running mac 10.4.9 and Ubuntu linux.

Topic by iman   |  last reply


why the robot cockroach run? Answered

                it is known as dry cell ,      and the second why run robot cockroach run is one of the fundamental gravitational force.

Question by rodniactive   |  last reply


run a ps2 on a 9v battery?

The adapter says it runs on 8.5 v

Question by    |  last reply


firefox 3.6 running slow?

Since upgrading to firefox 3.6, my browser is running slow and freezes

Question by NUNYABC   |  last reply


can a computer run on water?

Can a pc or laptop run if continuous supply of water is available?

Question by chann90   |  last reply


is there a way to run this loudspeaker with the computer ? Answered

Hi guys, is there a way to run this type of loudspeaker with the computer ? thanks in advance

Question by BilalC4   |  last reply


Who here runs linux?

Anyone here run linux? If so what kernel? Do you use it a lot? Got any cool apps? I run Ubuntu 7.04 feisty fawn.

Topic by sardines454   |  last reply


running a marathon with a camcorder-How to??

Can i mount a camcorder on my shoulder with straps (or duct tape)  and run 26.2 miles through beautiful mountain ranges.  Hands must be free. Any suggestions?!

Question by swieckert   |  last reply


Run mac programs in windows?

I want to run future basic from my home to work on school work but i have a pc. Is there any easy emulators or ways so I can run future basic on my windows 7?

Question by zigzagchris   |  last reply


How to run a DC motor? Answered

I had a motor with four pins i dont know how to wire the motor to run.Can anyone tell me how to run that?  

Question by Rajkumar2506   |  last reply


running a loop in arduino program

I want to run a loop only upon taking the user input i.e whenver user gives input, the loop must run N times where N is the user input. Can i do so? please suggest with the code.

Question by VinodhT   |  last reply


Ears Popping While Running?

Whenever I run a 5k, I'm finding that my ears start to pop part way through. It makes everything louder, including my breathing, and is extremely distracting. One website mentioned dehydration as a factor, another said something about blood pressure...does anyone know about it? Thanks!

Topic by Weissensteinburg   |  last reply


Running DC motor underwater? Answered

I have heard that DC motors can run underwater and am trying to build a project with them running underwater. I recently tried running a brush less DC cooling fan underwater and it broke. Meanwhile I tried another mini DC motor, the kind that cost $.99 each and it worked fine. Does anyone have any ideas why one worked and the other did not? Does it have to do with being brushed or not? Lastly would something like http://www.pololu.com/catalog/product/1117 theoretically run underwater? Thanks.

Question by Hammock Boy   |  last reply


sliding door running rough?

Does door have ball bearings that need replacing and how ,sliding door

Question by teabreak 


A fountain that does NOT run on electricity

I know it is possible to build a fountain that runs on gravity and water pressure, but I'm not sure how to go about making one. I understand that you can't get something from nothing, and I'm not looking for a fountain that would run endlessly. If someone could show me the basics of how such a font might work, I would greatly appreciate it. 

Topic by Trigonography   |  last reply


how to run ettercap in vista? Answered

I installed ettercap in vista but as soon as i open it and start sniffing it says... stopped wprking and get closed

Question by richa1430   |  last reply


Connect engine to alternator, will it run?

I have a new diesel 3 H.P engine and an 80 amp car type alternator, 12 volt. A, will the engine run the alternator at full output to charge batteries? B, Can I fit a bigger pulley to the engine? Regards Brian.

Question by trebby91   |  last reply