CAD and code are available if you want to roll your own. Still, the actuator works great, and it looks pretty cool while doing it. It’s a clever design in that it keeps the weight of the motor away from the actuator, but it does have its problems, as admits. A Kevlar kite string is attached to each end of the central tube and then through PTFE tubes to a pulley on an ODrive BLDC, which extends and retracts the actuator. The cable drive system used is pretty neat too. Along with some clever eccentric spacers to fine-tune positioning, this design provides six points of contact that really lock the tube into place. The stiffness of the actuator comes by way of six bearings to guide the arm, arranged in two tiers of three, each offset by 60 degrees. Built mainly from carbon fiber tubing and 3D-printed parts, the actuators have about 30 centimeters of throw, and thanks to their cable-drive design, they’re pretty fast - much faster than his earlier lead screw designs. Nothing commercially available checked all the boxes, so he set out to design his own.Ī few design iterations later, arrived at the actuators you see in the video below. For a planned ball-juggling robot, found himself in need of linear actuators with long throw distance, high speed, and stiff construction. These custom-made linear actuators are a perfect example of when building your own wins. The amount of time you have to put into building something is rarely justified, especially with a world of options available at the click of a mouse. When it comes to the “build versus buy” question, “buy” almost always wins. ![]() Want a stream deck, but don’t want to build it? Just dig up an old phone or tablet.Ĭontinue reading “Open Deck Is Your Window To Shortcuts” → Posted in Arduino Hacks, Microcontrollers Tagged carbon fiber, ESPP8266, macro pad, macropad Be sure to check out the extremely satisfying build video after the break. Once programmed, each shortcut is capable of having three beneath it, with the fourth button reserved for Home. Operationally, Open Deck has a nice-looking GUI. Custom parts like the acrylic keycaps and the carbon fiber top plate are available on Tindie if you don’t have access to a CNC. However, the most vital part to get right is the screen, which must be a 128 x 160 TFT display in order to line up with the 3D printed frame that divides it into fourths. This lovely little macro pad is built around the ESP8266, specifically the WEMOS D1 Mini V4. ![]() Between the carbon fiber top plate and the crystal-clear acrylic keycaps, this is quite the elegant solution. This is one of those projects: a (surprisingly) low-cost DIY macro pad from that was designed to be a cheaper alternative to the various stream decks out there. Once in a while, we see projects that could easily pass for commercial products. Following curing, the tape and mandrel are removed, resulting in a rather fancy looking CF tube that can find a loving home in a lot of applications, except perhaps ones that involving crushing outside pressures like those found deep below the ocean surface.Ĭontinue reading “Make Carbon Fiber Tubes With An Open Source Filament Winder” → Posted in cnc hacks Tagged carbon fiber, composite, resin This is followed by a heat gun session to shrink the tape and letting the resin cure. During winding some excess resin may have to be removed, and after the winding has been finished the tube is wound with shrink tape. ![]() The entire machine’s design with 3D printed parts and off-the-shelf components is open source, as is the TypeScript and NodeJS-based Cyclone software that creates the toolpath specifying the parameters of the tube, including number of layers and the tow angle.Īs a wet winding tow machine, the carbon fiber strands are led through the liquid resin before being wound onto the prepared mandrel. A tutorial video (also embedded below) shows how this machine is prepped for a winding run, followed by the winding progress and finalizing before admiring the result. The model rocketry hobby is the reason why developed his own CF tube winding machine called Contraption. ![]() (Credit: Andrew Reilley)Ĭarbon fiber (CF) is an amazing material that provides a lot of strength for very little weight, making it very useful for a lot of applications, ranging from rods in CoreXY 3D printers to model- and full-sized rockets.
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