MRX H-Quad

thingiverse

An MRX H-Quad constructed from a combination of 3D printing plastic and 10mm carbon fiber tubes, designed for FPV capabilities that work seamlessly with either the KK2.1 or Naze32 flight controllers. Notes: The friction-fitted 10mm carbon fiber tubes are secured between 3D printed plastic parts, which are compressed using 6-32 machine screws easily found at any hardware store. It's built to last! Unlike other 3D printed drones prone to damage during crashes, this H-Quad features convenient break points that facilitate effortless field repairs. In fact, the prototypes constructed thus far have proven extremely resilient, with even severe impacts resulting in only minor motor mount or zip tie damage. Print Settings: Printer Brand: Ultimaker; Printer: Ultimaker 2; Rafts: Doesn't Matter; Supports: No; Resolution: .1; Infill: 50% Post-Printing: Bill of Materials: Motors - EMax MT2204 (http://goo.gl/SdcgdZ); ESCs - Micro 20A (BLHeli with Oneshot125 support); Flight Controller - Naze32 Rev 6; Carbon Fiber Tubes - 2 x 8mm x 10mm x 500mm (available on eBay); Machine Screws - 6-32 (easily found at any hardware store); Power Distribution Board (http://goo.gl/8GrucI) Introducing the MRX H-Quad: Construction First, decide between building the wider KK2 configuration or the narrower Naze32 setup. I've found that the Naze32 provides a more stable flight experience. 1) Cut the 500mm carbon fiber tubes in half using a ceramic jigsaw or hacksaw blade. You should now have four tubes arranged in an H-shape, with one on each end and two in the middle. 2) Connect the tubes using 4 plastic T-connectors and 16 6-32 3/4" machine screws. 3) Attach the motor mounts to secure them firmly in place. 4) Attach the motors to their respective motor plates using the included screws (note that this differs from the motor mounts). 5) Secure the motor plates to the carbon tubes with two zip ties, which can be replaced if damaged during a crash. 6) Solder your electronic connections for a clean setup. 7) Mount your power distribution board to the lower PD plastic piece and connect it to the carbon tubes using machine screws. 8) Install your Flight controller on the flight controller plate, making necessary connections to your ESCs, receiver, and BEC (depending on your configuration). 9) Finalize all electronic connections between motors, FPV equipment, etc. Design Features: Front - FPV Camera and T-Connectors / Motor Mounts; Underside - Wires are routed through this area for a clean look; Motor Mounts - attached via 6-32 screws for added strength; Motor plate (on top of mount) connected via zip ties to facilitate easy detachment during crashes. Back - 3-panel LED lights aid in orientation and navigation. Power Distribution and BEC are sandwiched between the top flight controller mount and the bottom plate, secured using 6-32 machine screws that are flush-mounted for a sleek appearance. The use of carbon fiber ensures the drone's strength can withstand even extreme impacts, such as a 10-year-old's weight.