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soccer trainer

Hey guys, I am currently a student with a very weak coding/application background. I researched and got the basics down but its all comes down to logic and hardware.Currently I am building a soccer trainer robot that can be controlled via android app.The user utilizes a xy coordinate system to move the robot to shoot the soccer balls at that player at various speeds and angles. Basically, the android app routine is User inputs settings - > (random/preset) training -> moves robot to desired location on interactive xy gridlayout (soccerfield) -> send signals to arduino to shoot soccer balls at different speeds and angles at the user I was wondering what programs and languages I would need to know for me to develop this application. Any help would be great. Thank you! 

Topic by mikelim91    |  last reply

Ski / Snowboard Simulator/Trainer

Hi, I've always wanted to figure out a way to build my own ski/snowboard simulator to help teach my kids(and others) how to snowboard. In our  & case, give them refreshers since they know how to snowboard and they're only.  My 17yr old daughter, on the other hand, that's another story. She hates snowboarding because she can't grasp it, so this would be good for her too.  Here are some links to give you an idea of the type of simulator I am referring to:;=player_embedded#at=169

Topic by sammyvillarreal    |  last reply

Fitlight trainer using arduino

I want to make a fitlight trainer with arduino. I want to make it with leds and LDR ligtht sensors. A random light pops up and when you hover over the sensor it sets it to LOW and then another random light pops up and over and over. Can anyone help me with this idea? I have the code for one light: int LDR = 0;     //analog pin to which LDR is connected, here we set it to 0 so it means A0 int LDRValue = 0;      //that’s a variable to store LDR values int light_sensitivity = 20;    //This is the approx value of light surrounding your LDR void setup()   {     Serial.begin(9600);              pinMode(13, OUTPUT);      } void loop()   {     LDRValue = analogRead(LDR);      //reads the ldr’s value through LDR     Serial.println(LDRValue);       //prints the LDR values to serial monitor     delay(50);        //This is the speed by which LDR sends value to arduino     if (LDRValue > light_sensitivity)       {         digitalWrite(13, HIGH);       }     else       {         digitalWrite(13, LOW);       }   }

Topic by JordyK4    |  last reply

Home-Trainer-Bike "no pain no gain" video system

Hi everybody, i want to build a home trainer which connects to my computer in that way, that video will only be played when i do some exercise. my idea: - attach bike dynamo to home trainer bike - make connection to old external computer keyboard - fiddle with the software so video is played when a button is "pressed" (or activated by exercise), if the button is not pressed, the video will pause. the last point seems to be really tricky - any ideas? any alternative ideas from anyone? i do not want some on/off switch because then you could simply do two strokes on the bike and sit back and relax to watch the movie. i want a solution where only when straddling the video will play. cheers, stefan

Topic by spot-x-berg    |  last reply

How do I construct a pommel horse? Answered

I would like to know how to construct a pommel horse.  Plans on how to do so would be great.  The required materials, instructions, photos would be fantastic as well.  This is for home use only.  Adjustable legs, for height variations would be a bonus and and ability to use is securely on the floor without legs would be nice as well.  I am not particular on the materials, inexpensive, rather affordable would be a bonus. Functionality is whats really important.

Question by Phukitol    |  last reply

How do I print on trainers/shoes?

I am looking to print some designs on some trainers - preferably Adidas Stan Smiths or similar. I'll probably do one colour but I am interested in any technique.

Question by itsmonkey  

How can I make my own bicycle trainer out of cheap materials?

The cheapest one online costs $80!!! It's basically a stand for the back wheel of your bicycle, plus some kind of resistance on the wheel to simulate real riding on flat or hills. I need to stay in shape even when it's too cold or windy to ride outside. thanks in advance!

Question by laurenmendoza  

Is this fair? Answered

I had bought a pair of trainers the other day, not realising that  they were two different trainers. When I went back to the shop only wearing the trainers for a day, they said that I couldn't get a full refund because they were 'worn out'. Is this really fair, the store was sports direct and the trainers were £20. The member of staff even said that it was alright to wear two different trainers! That was just to be cheap.... Is this really fair? I have lodged a complaint so hopefully I should get some satisfactory conclusion.

Question by knektek    |  last reply

Paper Airplane Contest 6 (Closed)

To coincide with the publishing of my one hundredth instructable, I am hosting a sixth paper airplane contest (PAC6). However, unlike my previous contests, this one is aimed at origami aviators just beginning their flights. Although the previous “PAC5” has yet to conclude, I feel it is an appropriate time to start up another contest, due to the different aims of the two. For this contest, the specification is for a trainer paper airplane. Requirements: 1. Aircraft Requirements: • Ability to fly at least 25 feet (7.62 meters) from a launch height of 5 feet or higher • Durability to fly at least 25 feet, at least 15 times • At least two of the following must be featured on your aircraft: flaps, elevators, rudders, ailerons, spoilers, elevons, decelerons, spoilerons, flaperons, air brakes, slots, and/or slats • Allowed materials include: 2 sheets of 8.5 by 11 inch (A4) paper, 8 inches of Scotch tape, scissors, a stapler, 5 staples, a ruler, a pencil, pen, and 2 paper clips • Aircraft must be named 2. Instructables Requirements: • 1 page (not the intro page) devoted solely to materials required in construction • 1 page explaining how to fly the aircraft • The instructable's license must be: "Attribution Non-commercial Share Alike (by-nc-sa)" • This sentence and link must be displayed on your entry's intro page: “This instructable is an entry in Paper Airplane Contest 6 (” Prizes: For this contest I will award the publishers of the top 5 performing paper airplanes* one patch each. However, unlike previous contests, each patch will feature its respective aircraft, rather than medals. The first place winner will also receive a 3 month Instructables Pro membership. *Multiple entries are allowed. To keep the distribution of patches wide however, each entrant can only win one prize. How to Enter: To enter this contest, you must send me a private message entitled “My NGT Paper Airplane [Member Name Here]” with your instructable's URL included. (The “NGT” acronym refers to Next Generation Trainer, in order to distinguish it from PAC5 entries). I will then put the link and author's name onto a list on this topic under "Entries". Judging: I have decided that I will judge all the planes myself based on abilities. I have decided this way because I believe judging on performance and suitability, rather than shape, is a more objective approach. The contest begins Friday, June 17, 2011 and ends Friday, July 15, 2011. Entries must be published before Friday, July 15, 2011. From July 16 to July 18, I will be judging all entries. I will announce the winners of the contest on Tuesday, July 19, 2011 and issue them their prizes Wednesday, July 20, 2011. Entries: wat.: "Hammerhead Glider II" ( vishalapar: "Smoothliner IV" ( Results: 1st Place: vishalapar: "Smoothliner IV" ( 2nd Place: wat.: "Hammerhead Glider II" (

Topic by OrigamiAirEnforcer    |  last reply

how to find t pin and ground on headset of force trainer toy? Answered

I can not find t pin and ground on head set board of force trainer toy,can somebody help me?

Question by milomir    |  last reply

How to show change in current?

I am making a trainer kit for my students. The kit will show the operation of resistors in series and in parallel. In series circuit I connected an LDR with a piezo buzzer which shows the change in voltage. But the same thing does not work in the parallel thing. The change in current does not affect the buzzer. Any Idea what can be done to solve the problem is appreciated?

Question by artworker    |  last reply

bird launcher?

I need to make a homemade bird launcher (since i cant afford 200 dollar profesh ones.) all it has to do is make anything from a coin to a bird decoy at least 5 feet in the air.... anyone know of a good ible or web site that shows how to make one?

Question by redsuit09    |  last reply

good,durable skate shoes for about £30?

Pictures would be useful if possible please

Question by l96470fps    |  last reply

how to download software and install?

I am trying to hack eeg force trainer toy with aurdino, computer and i have difficulty downloading software,caan somebody help me?

Question by milomir    |  last reply

How to interface a 16x2 lcd with fpga

I have to interface a 16x2 lcd with spartan 3 trainer board using xilinx .. Im looking for pointers in the right direction. Any ideas ?

Topic by Hussam    |  last reply

any ideas for a live-feed video camera for a R/C plane?

I am going to get a Super Cub trainer and I want to know how to mount a live feed camera and what type of camera

Question by a10lover    |  last reply

Spam Threads

There are a load of spam threads starting, especially for websites selling sporting stuff. Please do not reply to them, just flag them for review then let them fade away down the list of threads. If you want to make a comment, PM the "member" who started the thread.

Topic by Kiteman    |  last reply

How do I build a "horse walker" (no motor needed)?

I am wondering if anybody has ever built a horse walker before. I am looking for an easy design that will be safe and effective. I am not trying to make a fancy machine with variable speeds or forward and reverse. My girlfriend is a young horse trainer and money tight, especially with the economy. Any advice would be greatly appreciated.

Question by jacobudo  

3D Motion Tracking System - Plug and Play

We're working on developing an electronic personal trainer. When we started, we couldn't find an easy to use, plug and play system that could collect all the data and give us the measurements we needed... so we built one ourselves. It's comprised of three 3-axis MEMS sensors to provide 9 channels of data, an onboard microcontroller, rechargeable battery system, and bluetooth module to make a complete 3D tracking system. Is anyone else out there working on motion projects that could use something like this?

Topic by enflux  

DIY EEG see whats on your mind - Any Ideas on how to build one?

A Electroencephalography (eeg) is a divice that measure electrical signals from the brain. There is a site called which has plans, but its hard to follow. Wanted to see if anyone was intrested in putting together a instructables to make one of these on the cheap and easy to build. Think this starwars toy could be a starting place?  It's called Force trainer and I guess it's suppose to read your brain waves. Sound like a load of crap to me, but might be a place to start.  

Question by JoeMurphy    |  last reply

elliptical bike?

Has anyone ever heard of an elliptical bicycle? I came up with a design that would pedal using the walking motion of an elliptical trainer and you could stand up or sit down. I recently have seen a video from Maker faire and caught a glimpse of a bike with a similar design. Some minor differences included: The use of a chain ( I think that might give more room to walk/pedal opposed to my design with no chain), the pedaling is higher, and it looks more sturdy. This is helping me produce a better design. A glimpse at the other design is around 7:00 to 8:00 in this video. I hope someone has heard of it.

Topic by Lego man    |  last reply

Love Sucks Party

My friend Bug is responsible for a fine Valentine's Day tradition: the Love Sucks party.This party is held whenever he's single (according to the rules below), and is open to any single friends and their single friends. It's usually held at a distinctly non-romantic type of restaurant with ample seating and strong drinks. I know of at least one marriage that's come of Love Sucks parties, but that's really not the point, is it?The rules:1) Single is defined as a) really single, b) your SO is at least 3,000 miles away, or c) you don't have a date for Valentine's Day and your romantic entanglements require a white board for proper mapping, otherwise known as the Circus Trainer Clause. (As in, "my girlfriend is out for dinner with her husband and her girlfriend, the circus trainer..." or something equally convoluted enough to require a whiteboard for mapping.) Either way, participants are likely to be a bit grouchy about the holiday.2) Single friends can bring another of their single friend as a "non-date", ie someone they would never date. There may be more rules, but as I've never been (un)lucky enough to attend one of Bug's Love Sucks parties I'm a bit fuzzy on the other details. (Bug, can you help out here?) It should be noted that he's NOT planning one this year, as he doesn't qualify to attend. ;-) This shouldn't stop you from picking up this worthy tradition. Just make sure to bring a whiteboard.UPDATE: here's Bug's official description and invite template for all to use.

Topic by canida    |  last reply

Geting started

I would like to help people start building and flying model aircraft! I started flying unpowered gliders with my dad at the age of 5 by the age of 8 I could do figure 8ts with the same model of unpowed glider, then I moved to my own plane a wingo which is a great durable slow park flyer, the kit comes with every thing you need except for a controller, servos and glue. I put a brushless motor and a lipo battery with this setup I could fly strait up until you could barely see the plane (about a mile high). After that I got my first 3d trainer a ucando which is also durable and constructed with hot glue!!! So far I have crashed into a blueberry bush and torn wings to pieces, but I am in the process of gluing back together.I prefer electric models over gas or glow models; their cheaper, quieter, smaller and more durable. Here is a great place to find beginner and advanced electric planes. Their are also different types of kits, ARFs (Almost Ready to Fly) are my favorite type of plane they include most of what you need for the plane inside the box, most only take 2-6 hours to complete and dry. Much easier for beginners to build and not mess up. Normal kits have only parts and dont usually include motors batteries or any thing else, they can take weeks to build but can be much cheaper. And theirs a third RTF (Ready To Fly) more expensive than ARFs but most of the time all you have to do is charge the batteries! You should visit your local hobby store to find out more about the local clubs and flying fields it is illegal to fly some sized planes in naborhoods I am not familiar with all the laws but I only fly at flyingfeilds. A plane like the warp would probly be fine to fly in your back yard or naborhood field. You should know that making model Rc planes can be addictive, expensive, and when you crash and destroy what you have been working on for a month extremely frustrating.Join the AMA and your local flying club, model aviation is a great way to make friends and meet new people, oh and its fun! For all ages!horizon hobby is a group of hobby stores. hobby store locatorIf you have any Q's please ask!Id also like to start a list of good trainers the yard stick is not as durable as the wingo but can be found every werethe wingo a great beginer ucando a 3D trainer (get a wingo first)

Topic by i make shooting things    |  last reply

How many times have you changed your major?

Or, if you're out of school, how many times did you change it during school? At first, I thought maybe I'll do biology. Then it was CIS. Then I thought hmmm... English. Then Psychology. I've finally ended up in the Health field and I love it. I was going to do Public Education... but it seems quite unattainable now and I'm feeling a bit overwhelmed. I don't think it's something I can do while working full time. Plus... I'm really not getting along with my epidemiology classes. So now I'm leaning towards being a physical education teacher or a personal trainer. (Exercise science.) And yet I would still rather spend my time building things. :P

Topic by jessyratfink    |  last reply

Any ideas on making an inexpensive remote water sprayer?

Our cat is keeping us up at night and we need a remote trainer to squirt when she claws at the door.  We've tried sneaking up and squirting under the door but the floor squeaks and she hears us coming- therefore her behavior has gotten worse because she is getting attention. We are losing sleep and can't afford a $150 citronella sprayer.  Any ideas you may have would be much appreciated. (For those of you who have cat advice we don't want/need more- she gets plenty of attention throughout the day, we've tried letting her sleep with us, and she can't be trusted to roam free at night. We need a cat training tool) 

Question by jsthiel    |  last reply

Light-Board reaction time test

So I'm into martial arts and I was surfing the net looking for hand-eye and reaction time tests. I came across this The NFL and other sports trainers use it to  either gauge or improve reaction time, it's very popular among boxers and hockey goalies. I want one, but of course it's outrageously expensive so I was wondering if anyone had any advice on how I could make something similar of my own. I was thinking of using LED lights and some kind of pressure switch to register my touching the light. the main problem is I don't have any idea how to make the lights blink randomly. if anyone has any Ideas I would greatly appreciate it thanks!

Topic by lmm1779    |  last reply All Types of Fitness Questions Answered Here!

Hey all! This is here, also known as "Em", your virtual Fitness Trainer! Recently i have been getting a lot of requests to start a forum topic on fitness, exercise and nutritional advice! Well here it is. Please post any type of questions you may have that concern any area of fitness and i will try my best to answer them!! I promise i will reply to every question ask, so don't be shy! Just to get you started here is a 2 exercise videos i recently published on Instructables! Simple Push up Matrix Intermediate Push Up Matrix  I'm looking forward to helping you reach your Fitness goal, so ask away!

Topic by  

hello friends !!!!!!!!!!!

I am girl dong my final yr. 6 months back we had a training program. I got impressed with one of the trainer. But at that time I don’t know that I like him. After a month I found social site and we become friends. Then I wished on all occasions and also got replied from him. After that Both of us had friendly conversations. But passed three weeks he is not replying for any text r wishes of mine. In fact not even seeing my messages. Though we are in different places have contact only through social site, I don’t have contact number also.  Am totally out of mind. I know am really missing him and I want make him as mine. I am serious about it. Say How to impress him who is in different place? .. what I should do so tat he should text me?... Friends suggest me some Ideas… Genuine comments please ...............

Question by Kivish    |  last reply

Make a ultrasonic Dog Barking machine??

I need someone to make a ultrasonic dog barking machine. I have a neighbor who allows their dog to back early in the AM and all during the day, so I want a powerful ultrasonic device that when i turn it on it will make their dog howl at 3AM and wake them up, similar to when the fire engine goes by, so that they will get a taste of what they do to me. This has been going on for a year and I can't get them to do anything to train the dog, they just don't care. I am willing to pay for a device that will work. The dog training devices like you see advertised like "Barkoff" have to be in the same room and all I have read is the ultrasonic dog trainers available don't penetrate walls. I don't want to train the dog not to bark, I want to annoy the neighbors and give them what I have been getting. Evil, maybe, justified, YES! email me direct        THANKS

Topic by myxpykalix    |  last reply

RE: One Person Submersible From Plastic Drum

The following is a quote of the post I've just left on the aforementioned Instructable (;=NEWEST&limit;=40&offset;=40).  I would really appreciate the removal of this instructable. "Hi. I am a certified OSHA and CSAO commercial diver air dive supervisor, level 1, and qualified Master Scuba Diver Trainer with the Professional Association of Diving Instructors. This is a very dangerous idea. You might not die, but someone else might/will/and has. Just because there is a disclaimer there, you and Instructables will be subject to litigation. There is a reason that people need a certification to operate this type of life support equipment. "Because of Boyle's law, maximal changes in volume occur in the 4 feet (1.22 m.) closest to the surface and the diver sustains a tear in the pulmonary parenchyma with the escape of air into the pulmonary venous outflow." I can quote other resources, such as the US Navy Dive Manual and the DCIM manual, but it's Boyle's Law, not Boyle's "kinda' might happen. I don't know". "

Topic by graeme.t.cooper  

How to connect a motor to this PCB ??? Answered

Hi ... in this case, I would appreciate your advice when it comes to connect a little bigger motor to this PCB. I know, that the description "bigger motor" wont be sufficient, but that's all what I know :( ... I added a picture of this motor. It's from a RC car ... and as you can see, it has a gear box. I used an adapter to make it run (3V-1A) and the power it gives, is enough for my project. The question/issue I see (with my poor knowledge) ... is to drive this motor from this PCB. This PCB is from a dog bark trainer. It is operated by radio remote control. It was able to make elec. shocks and to vibrate (the small motor). My plan is to operate the gearbox motor CW by pressing the "elec.shock" button on the RC and CCW by pressing the "vibrate" button = (remove the vibra motor, use the connections to drive my motor and do the same, but with opposite wiring by using the elec.shock connections) Questions : 1. do you think, that the microcontroller would survive the AMPs that the motor would consume ??? 2. do you think, that it is the microcontroller that decides, how long is the vibra motor on ??? (it's on for 2 seconds, after pressing the personal opinion is, that yes) Thank you ... in advance :) zholy

Question by zholy    |  last reply

How to Destroy 4700 Brand New Cars

As someone who feels that given enough time I can fix anything, this is one of those stories that really pains me. In 2006, a car freighter transporting 4,700 new cars from Japan to the US listed to its side as the crew was adjusting the ship's ballast. The ship leaned over to approximately 60 degrees, but was eventually righted in an operation that cost the life of one of the team members. Wired has the best coverage of how the ship was saved: High Tech Cowboys of the Deep Seas: The Race to Save the Cougar Ace. Having saved the cars, Mazda was now faced with the dilemma of what to do with them. Turning down options to donate, or in some cases even sell, the cars to fire extrication trainers, auto repair schools, or even Hollywood for stunts, Mazda has decided to carefully render each part inoperable -- cutting all four wheels in half, for example! -- shred the cars, and recycle the steal -- probably into new cars. They even created a purpose-built machine to detonate all six airbags at once. Be amazed and a little disgusted all at the same time by checking out the Wall Street Journal's coverage A Crushing Issue: How to Destroy Brand-New Cars and video:

Topic by ewilhelm    |  last reply

Notes on Specific Laws - the second Law

Second LawAn unsuitable thread isolated from replies will descend the list into obscurity.This is an "anti-spam" law. We have all seen threads appear that advertise odd things - trainers, dating sites, Chinese plastic-moulding factories - and we all agree they should no be here. It is tempting to reply to the threads to express our chagrin, but that makes the thread bob to the surface again, pushing more useful threads down.Far better to flag the thread and let it slide down the list until it disappears.In addition, this law can also be applied to trolls - if somebody starts a thread specifically to start an argument (as opposed to a discussion), or just to put another user or group of users down, then they are trolling. Those threads should also be allowed to slide.Addendum to the second lawSpam advertisers may be chastised through the Private Message system to prevent their thread's longevity.If you cannot resist giving a spammer a piece of your mind, the PM system is very useful - the spammer gets an email alert to your comment, they are aware of your feelings, but the thread is undisturbed.Similarly a troll may be gently reminded of the site's Be Nice policy via a PM. Should the troll decide to respond with vitriol, they are deprived of the audience they crave.Finally, you can help the site financially - using a PM to casually point out the correct route for advertising could, perhaps, result in a new fee-paying advertiser for the site.

Topic by Kiteman    |  last reply

I brought home a new puppy Sat and my 2 year old dog is not happy about her.

Hello, I have a wonderful neutered male, 2 year old Cavalier king charles named Bentley. Bentley Loves people, kids, other dogs, cats, everything and every one. Perhapes he has been a bit spoiled. He has been well socialized often taking dog park trips, took a socialization class as a pup.. we work on issues with a trainer as they come up.. he had been humping from time to time at the dog park so we were working through that. I love Bentley so much have wanted to add a second cavalier king charles for some time. We went meeting dogs and Bentley got on fine with them all on their territory and on neutral territory. We finally choose to go with an 8 week old female black and tan cavalier from the same breeder we got Bentley from but different parents (the dogs are actually co owned) They did fine on neutral territory but as soon as we got in the house Bentley was mad.. I have never seen him like that, Barking, snarling, at her. I separated them and have been trying to work things out with them gradually. It has only been a couple of days of course.  He also tries to push her under him and hump her, but she wiggles out as a small 4 lb puppy will, and he gets annoyed about that too. I can tell him "SIT" and it seems to redirect him. I am so in love with my new girl who I have named Velvet, already, so I need to make things work out. Bentley seems fine with her when they go out and potty, or are just calm together, sometimes something will set him off though, like if she gets too comfy on my lap he will start growl barking at her and acting like he might nip her but doesn't actually do it. though she does have slobber on her after. If she moves to my husbands lap he goes over to him and does the same reaction. then I have to separate them. Toys.. forget it, he will not let her have her toys or his. If they are just walking around together they seem fine.. but he does not like her getting playful or too snuggely with us.. he also gets mad if he notices her mouthing. (teething pups of course require that training) it is hard not to have him notice as we are correcting her.  I am trying to keep things equal, equal attention, when they are together (she is crated  a lot for house training anyways) They potty together and both get a treat, teaching her sit if he is there and sits they both get a treat. Both get petted at the same time together, and when Velvet went to the vet today I took Bentley along. These were all tips from the trainer I go to. I just have never seen this sweet doggie boy of mine so bent out of shape at another living thing. I just want re assurance that others have been through this, and had it all work out in the end, and give me tips as to what worked for them! I keep reading mixed advice on what to do in this situation so I am not sure what to do. I am leashing them for interactions right now of course for safety reasons and I am of course only allowing closely supervised play. Velvet also has a safe play area that I gated off with an xpen, where her crate is. They are eating in the same room, But Bentley does not care much about food anyways, never had a food aggression problem there.

Question by meg81    |  last reply

Pommel horse revisited: How do I construct a pommel horse?

Assuming I have the the means to obtain the required materials Pommel horse revisited: Assuming that hardware can be obtained, i.e, the core,  be circular tubing, solid steel or wood core, hallow construction( example, think of a construction a post using 4 2' x 4', ergo a hallow post),  pommel handles, the polyethylene foam, the vinyl or leather covering, the leg supports, be they wood, square or circular tubing, and the necessary tools ( wood/welding) how is a pommel horse made to closely match a regulation pommel horse a trainer)? Answers should include the following:  Feel free to add to this list as I am sure it isn't complete in your answer. Construction materials and hardware used to construct the pommel horse, aside from the aforementioned basics. i.e, use of a solid core like 4 8'x8' posts, a circular tube, or variations to achieve the desired dimensions/ If the design includes the bread loaf taper, how was this achieved? How the pommels were attached and the hardware used.    If the pommels are fabricated how was this done, but lets assume they will be purchased. Variations of supporting base structure is acceptable. Answers need to include how supporting base is attached to the horse and what hardware or means of attachment are used.     A. If leg supports are adjustable, by way of circular tubing or square tubing with holes that can be locked into place, are they prefabricated?      a1. How were the adjustable height leg supports constructed. For example, Think of sliding a smaller pipe into lager one, or square tubing for that matter.        a2. How were the legs secured in this configuration to compensate for possible lack of rigidity/support?  Clamped B. If legs or wood and adjustable, how is this achieved and by what means, for instance, drilled holes and wooden dowels or longboats, etc...      Thanks to all those who dive into this. I've searched patents, several hundred search engines and archives and found all but nothing.

Question by Phukitol    |  last reply

Instructables Internship - Day 4

Alo Again,Well, this morning I didn't have the opportunity to burn my PB sandwich, not only because it was a PB&J; sandwich, but because the oven was filled with semi-burnt roasted tomatoes/garlic.Anyhow, Today I did some more outreach for the new Launch It! Contest and... drumroll please.... Billy and I shipped all of the remaining Laser Cutter Contest Winners' prizes! Woo Hoo! Other than that, the morning was pretty chill. I'm getting used to the much more relaxed setting here at Instructables. At all of my other internships I've had, everything was always so fast-paced, tense, and ridiculously demanding. At Instructables, everyone's just Chill. Everyone enjoys what they're doing. It's awesome.Also, I downloaded the Instructables MySQL dumpfile from Rachel, and I'm in the process of getting it back into MySQL. Eventually, I'm going to try and make some cool new statistic features for you guys!Billy and I tested out some LEDs and my ultra-thin/flexible solar panels, which are hella awesome. The specs say that they get 3V @ 22 mA max in the sunlight, but yesterday, I got that in the shade. In the sunlight?: 4.19V!After that, Jason, Billy, Noah and I checked out the Water Jet in Instructables' machine shop. Billy had to cut some stuff for a project of his, but watching the machine "do its thing" was really cool. There's so much awesome stuff here, I still can't believe it.Noah, Jason, and I then picked out some stuff that was going to get thrown out to use in Proj. X, and we ordered the Surgical Tubing, too!Then, Jason, Mike (Works for Potenco), and I went to the beach to check out the kite boarders, and fly the trainer kite. (Eventually, we'll get to kite board, too!)Alright, I think that I'm actually going to go get started on Proj. X now...I've included some pictures that I've taken throughout the day.Cheers,-MuffinatorP.S. I came up with an awesome badge idea, and I'll draw it up today on the computer. I'll post it by tonight, so make sure you tell me if you like it or not!

Topic by T3h_Muffinator    |  last reply

Being an Artist in Residence at Pier 9: MORE IS BETTER

My second one month term as Artist in Residence at Pier 9 was a blast, again. Now I’m back home, the jet lag is behind me and the making rush is replaced by the rush of “ordinary” life. Time for a short “retrospect” What remained the same compared to the first time, is being torn between spending as much time as possible in the awesome workshop, interacting with creative soul mates (both AIRs and Autodesk/Instructables people, all very creative and very busy themselves) and the lures of San Francisco, a city that brings the whole world to one place. What has changed that there is even more of the good stuff. When I did my first one month term as AIR, in July 2013, Instructables had just moved to Pier 9 and the workshop was brand new. Now the workshop is fully operational, with some more machines even. There is a very professional training program in place, with very good and passionate trainers, quickly learning you how to work with the machines. In July 2013 we were 4 artists, Now, April-May 2015, fulltime and part time artist together we where about 30! That high concentration of creative people, with a wide range of interests and skills, really gives a vibe. It is clear both Instructables and the Artist in Residence program thrive in the environment made possible by Autodesk. It is fantastic to see how this company believes in giving creativity the means to materialise in the widest range of projects. I’m very grateful for the chance to share in that. I did five different blimp projects, two as workshops for children, which was absolutely great. I added five new sub projects to my laser cut advent calendar project and was able to make the advent calendar itself. Clearly, I have a lot of material for Instructables. So more is better. To bad for me I can only come for one month at a time (because of family and work reasons). One month is terribly short and so is two months. I crave for more ;-) Cheers and thanks to all you lucky people at Pier 9, Yvon a.k.a. masynmachien

Topic by masynmachien    |  last reply

Suggestions for a cheap, simple robot unicorn build

My 5yo daughter has figured out that her mad-Scientist daddy can make crazy things come true.  For her birthday, she got a real unicorn and a princess crown (see picture attached).  Now for Christmas, she has her heart set on a ROBOT unicorn, and I think I'm going to try to tackle this, but I need to keep the scope tight so that when Christmas arrives, I'll have a deliverable for her. (My instinct always leap to grandiose ideas like actual quadrupedalism that would balloon the time/effort/money inputs into the stratosphere.   My biggest obstacle to make this work for Christmas is to stick with K.I.S.S. principles.  I can do basic welding, woodworking, fabricating, stitching, etc.  I'm reasonably good at electronics, and am a professional programmer with a degree in Aerospace Engineering.) Here is my rough  build plan:  (Completely open to improvement suggestions) 1)  Build frame out of 1/2" square steel tubing and weld together.  Leave large torso cavity for electronics and batteries.  Feet will have wheels concealed by a hoof shroud.  Feet will be upgradable (see tech features below) 2)  Use blue foam to rough out body shape.  3)  Cover with about 1/2" of soft foam covered with felt.  Use yarn for mane and tail.  Cover should be removable and washable. I'm trying to figure out tiers of work so that as long as I get the basic frame and covering down, I'll be able to increase/decrease the scope to ensure I'll have a deliverable for Christmas.  Here are the tiered robotic features I am envisioning: Tier 1: Make the saddle bounce at about .5Hz with an amplitude of roughly 1/2".  Possibly make head/neck bob up/down in sync. Tier 2:  Add horse sound effects Tier 3:  Build sensors for the reigns and stirrups.  Monitor if stirrups get pushed inward in a basic kick the horse motion.  Monitor if one reign or both are being pulled.  Make sounds effects based on inputs.  (E.G.  Clop, clop of hooves begins when stirrups are pushed in, and stop when reigns are pulled.)  NOTE:  Since they have access to real horses, keeping the controls reasonably close to riding a real horse will make this double as a trainer/simulator for her and her friends. Tier 4:  Upgrade wheels to powered.  Move based on reign and stirrup inputs.   Max speed will be very slow (40fps or so), so that it can be used inside safely.  Movement is mostly just to augment her imagination, not to move like a real horse. Tier 5:  (Not much chance I'll get this far prior to Christmas)  Upgrade software, sound effects, etc. Current back of napkin ideas: Frame will probably have 3 pieces: legs/torso, neck/head, Saddle/back  Saddle/back removable for electronics access. Neck/head will be joined to torso in 3 spots:  the top point will be anchored with a chain link between two eye-bolts, the other two points would be on the sides of the bottom, with compression springs pushing the neck and torso away from each other, limited by a mechanical linkage.  This should give reasonable motion ability, and allow the two base points to become the sensors for the reigns being pulled. I'm thinking a small 12V deep cycle battery, and 12v salvage DC motors powering the wheels.  Depending on the motor torque, I'll either power the back two feet and keep the front feet as swivel casters, or power all four and turn tank-style. The budget needs to stay reasonable, say $100ish.  This is a kids toy, and I've got lots of other mad-scientist projects to pump money towards. Outstanding questions: Motor selection, cheapest with high enough torque Good, cheap way to make seat and possibly head oscillate.  Mechanism needs to not break even if a 200lbs rider sits on it.  (Doesn't need to work when overloaded, just can't be permanently damaged when overloaded.) Locate inexpensive 12v charger that won't overcharge if left connected, but will charge a 3ah battery reasonably quickly.  (Or schematics to build one)  Essentially, looking for a best bang-for-buck charger. Least expensive way to play audio clips?  I've got plenty of horse-sound clips located, but I need a way to play them economically. Not sure how much force will be needed for movement.  I'm assuming a 70lbs rider/robot max and that it will primarily operate on flat surfaces, potentially on carpet.  Can't burn out if overloaded.  Suggestions on simplifying this?  Suggestions on simple improvements?  Ways to keep the costs down?  Sources for economical parts?

Topic by SvdSinner    |  last reply

Damaged disc(s) in the lower back - what to do and what not ;)

I got diagnosed with a damaged L5 and L6 disc in my lower back about 8 years ago and I thought writing about my experience might helps others facing the same problems. Keeping your back straight when lifting or moving heavy things was a thing I already learned and followed during my school times and as you might have guessed it helped to keep my back healthy - at the expense of my knees... But the knees are a different story, today I want to help you understand lower back problems caused by damaged or bulging discs and how this will affect your life. For me it began with a little shock. One day I got out of bed, wanted to grab something I dropped and got stuck half way up. Knowing that there are some nerves that can cause the same issue and that a simple injection will fix me I called a cab to be dragged laying down on the back seat to my GP. As you might have guessed his diagnosis was a bit worse than what I wanted to hear... Many painful hours and some scans later it was confirmed that my L5 and L6 disk have collapsed on one side and started to push on the nerves next to it. Funny side not that I never really checked was that my doc said not everyone has a L6 disk... Anyways, as with most first "accidents" involving your lower back the so called recovery was long and painful. Sure the painkillers help to numb the worst, the anti inflammatory stuff covers some pain too but actually I did not want the full pain free package deal. Pain is the bodies way to let you know something is wrong, so I kept the pain medication at a level where I got that information when making a wrong move... The first 6 months I was literally confined to my bed, the shower and the toilet. I tried to keep a position with the least amount of pain for as long as possible and for obvious reasons was not too happy that my body not only required food intake but also the disposal of the waste products - getting out of bed and onto the toilet meant experiencing huge amounts of pain every time. But after those 6 months I started to adjust, to the pain as well as what my limited body was now capable of in terms of movement. Needless to say that all this time of not doing anything really meant my scale started to scream tripple digets at me one day... Luckily around the same time my pain levels went to a level that allowed my to walk around 500-600 at slightly slower speeds than normal before the pain got too much. My doctor also got quite concerned about my blood work and body weight recommending to loose a lot if I every intent to get back to a more normal life. So I started to walk several times a day, no matter how bad the weather was, just a bit up and down the street. The distance got longer, the fitness a bit better and the pain levels a bit lower too. Using my old weight lifting belt to keep the back supported helped me a lot during these times, especially when driving or doing housework. During those times I was still on 6-8 panedine forte tablets (paracetamol and codein) plus 2-4 tablets of 20mg oxicontin and not happy about the last anyway. Despite the added levels of pain I started to reduce the level of oxicontin and started to exercise more. My focus was getting the core muscles stronger and to get better support for my back. Also started riding my bike again, although I had to replace it for a bigger model to allow me a more upright position with less stress on the lower back. The kilos started to tumble very slowly but I was already quite proud when I got bak to 90kg. :( Good thing was that I got motivation to continue as every kg I lost and every little bit more on distance I got out of my walks and rides without getting too painful also meant that my average pain level went down too. Two years after it all happened I got rid of the oxicontin completely and reached the 80kg mark. My doc was happy too, my blood work looking good but of course he still suggested to loose a few more kg. Being able to move around again also meant being able to work again and with that came more food, less exercise and a lot more stress. I did manage to hold my 80kg but after about 6 months or working I noticed my back problems started to limit me again. My back belt covered for me and I was able to keep going a while longer but in the end I got hit by another attack on my back. The diagnosis was not good at all as now on top of the pain goind through the back and leg I also hab numbness and a feeling like ants crawl over the leg and chew on it every few mm. As with most lower back "revenges" this one only needed strong pain killers for a few weeks until I was back to something more normal in terms of pain and movability. Sadly the ongoing side effects did not go away the way they did the first time. This meant especiall finding the right position to sleep with the least amount of pain was becoming a nightmare on it's own. Either you got pins and needles keeping you awake, you lost your feeling in the leg to the point where it becomes useless or the pain in the back is just stabbing you all the time. Starting some projects here on Instructables kept my mind busy and gave me some welcome distraction from the daily routine. Eventually I manged to find a job again that allowed me to have enough different movements with only a bit of lifting so things started get back to normal. My doc put me on some amitriptyline to help with the pain at night and although it took some time to get used to the stuff it really started to help after about two weeks. The job was only for a fixed term but it gave me back some confidence that not all is bad or lost. Life went on and I actually manged to get down to just 75kg and only used some painkillers once or twice a week if it was really bad. Then, a few weeks back I started to notice that the top of my foot and the outside of my leg felt different to touch, especially in the shower with some brush or rough sponge. Not being happy already I agreed to some new scans to check if the discs started to cause problems or if the nerves are just inflamed. You might have guessed already, the scan confirmed that my two discs desintegrated further putting more pressure on the already suffering nerves. With the "help" of some quite strong anti inflammatory stuff, cortisone and other meds my doc managed to get me back to "normal" but he also informed me that this won't last forever. The current outcome (without surgery but more on that later on) I have two choices to keep going: a ) I continue with pain killers and other meds to keep the problems at bay. b ) I limit myself to basically not doing anything involving the movemnt of my lower back, keep to a strict calory intake and hope for the best. The first option won't do me any good in the long run except liver, kidney and digestive problems. The second option will allow me some sort of a normal life at the expense of never finding a job to support me again. So once again we soldier on knowing that it will only make things worse as giving up and relying on social services is no option for me. Hoping that you might just had your first encounter with lower back injuries and pain I will give some advise on the things that helped my most so that you might not have to suffer as much I did and still do. So read on please... Diagnosed with a damaged or bulged disc in the lower back - what does it acutally mean? If you check all the available images of the human skelleton you will quickly notice one thing: Our lower back is not really straight and not designed to carry a lot weight when it is put on the wrong way or direction. Noone with a sane mind would use a support beam shaped like that but the human body adapted to this problem caused by changing from using all four limbs to walking on just two legs. The muscles and tendons in our back work in such a way that they support the fragile construction of discs and bones that keep us upright. Sadly modern life, personal decisions and only too often a busy work shedule prevent us from using our body the wa we should. Be it too much lifting, being far too short for your weight or simply laziness the factors causing our muscle to degrade are too many to count. But once you are in the worst pain you ever felt and your doc tells you that there are damaged discs you suddenly wish you had it all done differently years ago - trust me, I have been there and I have done it ;) Or it might be like in my case that a healthy and fit person just cracks one or more discs for no obvious reason. Either way it means you have to change your life to be able to keep going. Pain killers help to ignore the problem and pretend all is good but they should be used with great care as most are highly addictive and the long term side effects are no fun either. The one thing you must never forget is although being a life sentence it must not mean you will be crippled forever! What can I do once it happened to help the pain and my sanity? Nerve pain is one of the worst pains there is and there are only two more or less working medications to deal with it. The first meds are opiates to literally numb the pain but due to source of the pain very high levels are required until the body adapted to deal with the wrong pain information. The second group of meds that offer help and that are often used together with pain killers are old sty anti depressants like the try-cyclic (was that right?) amitriptyline. Back in the days they were not really good for the advertised job but one of the common side effects was how they worked on the pain centers of the brain. In much lower dosages as used to treat depressions these meds help the brain to deal with the pain caused by the damaged or pinched nerves. As a long term solution they should be prefered over opiates so that the strong pain killers are only taken when really needed. If you are anything like me than not getting enough sleep over weeks on end will take a toll on your mood. So being able to sleep at least a few hours in one go is a real thing to aim for unless you prefer to harm your body with pain killers. What is there to help with the pain so you can sleep? I know that you now already think you tried it all and that nothing good comes out of here but keep reading as you might be surprised... The first thing that jumps into mind when it comes to sleeping is a bed - be it you by yourself or with a partner. And here also is the first point to improve! In many countries a bed for two persons has one bad feature: A single mattress! Any movement from the person next to you is transfered more or less onto your body - you don't want that! So if you own a big bid that you share with someone think about investing into a bed with seperated matresses and support frames. That brings us to the mattress itself. A lot of people think being soft and flexible is a prefered thing, not so much if you have back problems. You want enough support to keep the back straight without everything feeling like you sleep on wooden floorboards. Keep in mind though that when changing from soft matress to something much firmer you will need to adjust. Really the best option is to seek professional advise in a bedding studio or similar. And no, you don't have to go to the most expensive place to buy a mattress, you just try them out, get expert advise and use that new knowledge to find a suitable mattress to fit the budget. With no offence meant: If you are over the normal weight you really want to loose the excess and that means selecting a new matrress on your weight goal and not on your current weight! It is also good to have adjustable supports under the mattress itself, this way you choose a thinner and bit softer mattress but still get the firmness your back requires - again seeking proffessional advise on the right combinations is highly recommended here! Ok, your bed is sorted but still there is that nagging pain in certain positions or the tingling in your leg preventing you to go to sleep. Believe it or not but what you do before you go to bed affects how you feel when you hit the sack. So sitting like a bag full of water in front of your TV until just manage to crawl into bed won't do you any good. Same for having your dinner and hour or two before bedtime... What does help is to move your body and to burn a few kalories! If it helps you use a weight lifting belt but just a walk around the block with a little bit of bending and flexing will get the tension out of muscles. A nice partner giving you a proper massage might help too but I doubt you will get one every night ;) And before you start to complain: Yes, I know there are times where simply can't do any exersise as you will be happy to make it to the toilet or to make some dinner. For those times and especially during times of experiencing higher than normal pain level ther is something you can do to ease the pain. Some doctors will tell you but a lot of them wont: Cold actually helps to numb the pain and the symptoms like tingling, pins and needles or the constant stabbing when you made a slightly wrong move. But you need to apply the cold in the right way to get the benefit! The key here is timing. Using real ice in a suitable wrapper, so no vegetables or meat, you apply the cold where the damage is - not where the pain is! You want to cool down the area around the damaged discs for about 5 to max 10 minutes. Put the icepack back and repeat every hour! Nothing will happen after the first two or three round but then you will notice improvement - how much depends on the individual and extend of the damage of course. When I have bad days I usually start around mid-day and keep going every hour until either the pain is gone or it is time to drag myself to bed. The worst you can do is o apply heat! A warm (not hot!) bath can help to ease some muscular tension but hot packs or heat lamps will make your pain get worse quickly. Just imagine and inflammation somehwere else, the area is already hot and painful so you really don't want to add more heat, do you? ;) What can be done to keep mobile and improve? As said earlier the key is support for the damaged areas and of course a limitation in movements that put additional stress on the damaged dics - this includes weight, be it from your own body in terms of excess fat or simply be lifting things! You will have times of no pain and where you think you are 20 years younger again but never use that as an excuse to think your discs have improved! Once damaged they stay damaged and everything putting more stress on you dsic(s) will make things worse. A friend of mine loves to play golf - if you have back problems you want to find a different hobby! Coming from three digits I can tell you without being offensive in any way that being fat means having problems that you don't want to add to your list caused by a bad back! So like it or not you really need to loose all the excess you can find wobbling around your body! For me every single kg I lost was a step forward to being more fit and being able to more things for longer before my pain got too much. And no, there is no excuse for keeping those kilos if are able to leave the bed for more than a few hours. Turst me, you will feel better, need far less medication and like yourself much better once the benfits of less weight kick in! Exercise is the key to getting your life back to a more or less normal level! If you are a "first offender" than you have a good chance that a change of habbit and maybe job will make sure it stays a single incident and that you can have a pain free life after the initial recovery! Getting a higher core strenght and overall fitness level helps your body to heal but most importantly gives you the option to gain muscles where needed to support your back. You might think there is nothing you can do if you are in pain and can't really move anyway but if you do then you are wrong. I am not a personal trainer but I found a lot of ways to use my muscles without using my back for it... There is enough info on the web for exercise methods without any training gear and if you think "really hard" you might notice you can use a lot of positions to exercise your arms and legs without stressing you back ;) And even for the back you can do good without damage: If you lay flat on your belly you just slightly lift your arms and legs off the ground - this will need the support of the muscles in lower back! No need to actuall lift anything high, just enough to only slightly bend your back up - you might not even notice any bending at all. What you don't want is exercise like running, jogging or even contact sports, really nothing that might force your back to move more than what is possible without stressing your discs... Better fitness and more strenght means you will get better flexibility and movablity but never let that fool you into thinking the damage is gone! I can not stress enough than even if you don't need medication and feel fine a single wrong move can make all null and void! What are the options if despite loosing weight and excercise my pain is not going away or syptoms get worse? Well, we can ignore it, we can hope it all goes away but the sad reality for most is that sooner or later you reach the point where the damage is too much too handle. The first one to tell you that your lower back is now due for a pit stop is your foot. The pain might be more than what you ever experienced the pins and needles might drive you mad but as long as it just that you are fine, really :( For me it was during some light gradening when I got my "first hit" so to say. I brushed it off thinking I tripped over something that got kicked away while I struggled to keep my balance. A few days later I noticed that I had to put some extra efford to prevent my toes from scraping the floor while walking. It was there when I also realised that most of the feeling on top of my foot was gone. Same story for the outside of my calf by the way... For me, thanks to a non working medical system and no private health cover the story ends here... Since you might have more luck: Modern medicine has gone a long way when it comes to minimal invasive operations and they are the key to performing operations that otherwise would be impossible or require months of recovery. For the "treatment" of damaged discs in the lowest part of the spinal area the old conventional treatment was to fuse the bones together using some steel or titanium rods. To give the patient relief the dmaged disc was more or less mutilated to free the damaged nerve(s). Several weeks of bed rest and great loss in movement was the price to pay for less pain. Today we are much further and can use micro instruments to perform operations deemed impossible only a few years ago. One of the operations with the greatest and fastest recovery rates is actually quite smart if you think about it: A small portion of bone is removed to give more room for the nerve and to aid in the healing - without fusing the bones! The next step is remove the part of the disc that is bulging out - without removing the strong support layers around it, only the mashed up bits are taken away. The patient is literally pain free ( from the back pain) right after the operation. Healing takes about 2-3 weeks but by then even the pain from the cut bones will be gone. Some health insurers see these operations as a means to get a person back to work and into a normal life, so they support it. Others use simple math and decide pain killers are cheaper... In any case you should seek professional advice from your doc and health care provider before it is too late! Diagnosed and operated early can mean you get the option to have an almost normal life again, or at least a few years of being able to enjoy life much more than before the operation. There are of course risks involved and an opration might not be an option for every case but knowing your options and what form of treatment might be available for you can be reall life changing... Ok, but what's the worst that can happen to me if a simple operation is no longer an option? One of the first things you will notice after loosing control and feeling for your foot is a more or less contant need to go the toilet. Despite having an empty bladder or just using the toilet minutes ago you can develop the feeling that you really must go the toilet again. Sadly this is only the beginning... If things get worse you can loose control over your bladder and bowel. Simply put it means you no longer control the muscular tension required to keep you vital openings closed when required. Usually at this point your doctor will recommend to operate one way or the other. For you, if affected, this means you have to decide between the risk of an operation that might only last for a few months or years or wearing adult nappies... If you already had one or more operation or the damage to the disc(s) is too severe it can mean that there is no other option but to fuse the bones into place to prevent further damage and allow for some healing. But trust me, for your doc to even consider an operation you need to loose all the weight you can! What are my limitations after having my back bones fused together? Well, as it reads you will be fused together, meaning you level of movement will be severly limited. It also means you beep all the time at the airport security or when entering a court or other place with metal detectors - but that is the least of the worries I guess... The main problem after such operations is getting back to a life as normal as possible. You get a lot of help in rehab and will learn what you can and can't do, plus of course how to keep you fit despite these limits. Some people cope really good with the new limitations but others struggle a lot. This especially true if before the person was really active and doing a lot in terms of sport and outdoor activities. Learning to adapt to the changes allows you have many more years without too much pain or limitations. Sure, Golf is out of the question, playing soccer or riding a normal bike too but life goes on and being a part of it is always better than just looking at it through your bedroom window ;) In any case giving up should not be an option for you! No matter how bad it looks when the pain is too much, there are always more good days than bad days ahead of you! Go ahead, share your experience with back pain, what you do keep going and handle the pain. Share you information about what treatments helped you the most and share how you recovered to where you are now. Be an inspiration for those facing what we already went through! Real back pain based on nerve damage will only be understood by someone who experienced it - what did you do to make the people around you understand it? Whatever helped you might help someone wha just started to learn how to deal with damaged discs and back pain, so sharing is caring! ;)

Topic by Downunder35m    |  last reply