Awww Shoot! My Spool Doesn’t Fit My Holder

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The great thing about standards is that there are so many to choose from. Filament spools certainly do not deviate far from this sarcastic saying. So what are we 3D Printer folks to do? Here are a couple completely different DIY options:

[Mark] made a spool holder that can accept 2 different width spools. This design uses skate bearings to support the spool on two points at each end. There are 3 sets of bearing blocks to accommodate the 2 different width spools. When either size spool is installed, one of the bearing block sets goes unused.

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This Is Not Your Father’s Power Wheel

powerwheels-mainIf you had a Power Wheel vehicle as a kid you may have been the envy of the neighborhood. Even as fun as they were you probably out grew them. Lucky for a few youngsters, [Bob] hasn’t. Not only does he have several Power Wheels for his children to use, he does some pretty cool mods to make them even more fun.

Changing the stock motor out for a cordless drill is one of the first things that gets done. A few brands have been used but the  Ryobi 18v Cordless Drill is the favorite. The entire drill is used, including the reduction gearbox. The gearbox is switched to LOW gearing so that the drill has enough torque to move the combined weight of the vehicle and child. As much as it may sound odd to use a drill in this manner, the Power Wheel can get up to about 15 mph. A stock Power Wheels maxes out at 5 mph

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Multijoy_Retro Connects Your ‘Wayback’ to your ‘Machine’

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Moore’s law is the observation that, over the history of computing hardware, the number of transistors on integrated circuits doubles approximately every two years. This rapid advancement is certainly great for computing power and the advent of better technology but it does have one drawback; otherwise great working hardware becomes outdated and unusable.  [Dave] likes his flight simulators and his old flight sim equipment. The only problem is that his new-fangled computer doesn’t have DA15 or DE9 inputs to interface with his controllers. Not being one to let something like this get him down, [Dave] set out to build his own microcontroller-based interface module. He calls it the Multijoy_Retro.

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Bike Pedals in Both Directions, Gets You to Your Destination AND Back

 

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[punamenon2] has built an interesting bike that moves forward regardless if it is pedaled forward or backwards! What? Yes, you read that correctly. Pedal forward or backwards and the bike goes forward. This project started off as any old cruiser with a free-wheeling rear hub. To pull off this mod a second free-wheel and sprocket had to be added to the current wheel assembly. One free-wheel and sprocket set is used when pedaling forward, the other set is used when pedaling in reverse. There is also a new chain tensioner that serves to not only keep the chain taut but also allows for the chain to change directions which ultimately allows this novel idea to work.

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E-Waste Quadcopter Lifts Your Spirits While Keeping Costs Down

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The advancement of Quadcopters and their capabilities over the last few years has been amazing. Unfortunately, the price point to get into the sport with a decent size, non-toy, vehicle is still several hundred dollars. And what’s the fun with buying one when you can built it?!? Strapped for cash and feeling the same way, [Hans] over at the hackerspace Knackatory decided to build a quadcopter from e-waste.

The + shaped frame is made from lightweight plywood. It’s pretty obvious that the main rotors are PC Fans, 140mm in this case. Normally, these wouldn’t be able to create enough lift to get out of their own way except the on-board 24v Dewalt cordless tool battery bumps up the fan speed to 15,000 rpm. The one orange fan allows the operator to maintain a visual reference to which side of the ‘copter is forward.

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Magic Screwdriver Decides If You Watch TV Or Not

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Video projectors are great. They can easily produce a very large image to watch. With that large image comes a large screen, and who wants to look at a large screen when not watching TV? Well, [Steve] didn’t either so he set out to make a powered retractable screen for his projector. The best part about this one is that it is done in true DIY/hacker fashion. The parts used are definitely not intended to be used as anything close to a projector screen and the overall cost is kept to an absolute minimum.

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3D Printering: Custom RC Camera Mount Takes To The Sky

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3D Printers are only good for printing trinkets and doodads, right?  Not really. Although, I do print the occasional useless object, most of my prints are used for projects I’m working on or to meet a need that I have. These needs are the project’s design requirements and I’d like to share the process and techniques I use when creating a functional 3D object.

My pal [Toshi] has RC Airplanes and flies often. I have an Action Camera that I never use. Why not combine the two and have some fun? The only thing standing in our way was a method to mount the camera to the airplane. 3D printing makes it easy. If you have a popular vehicle or application, there may be something already available on a 3D model repository like Thingiverse. Our situation was fairly unique I decided to design and print my own mount.

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