Tricopter - La FraiseVolante (OpenSCAD)

thingiverse

A fully customizable 3D printed tricopter designed with OpenSCAD. It was my first big project to try out OpenSCAD for complex designs, and all parameters can be changed in Variables.scad. I added warnings in the log for illogical values but always check after modifications. Rod length will also be displayed in the log. OpenSCAD rocks! The tricopter works well, but documentation is a work in progress. If you need help, just ask. I'll update files more often on Github. Print Settings Printer Brand: RepRap Printer: P3-Steel Rafts: No Supports: No Resolution: 0.2mm layer height Infill: 15 to 25% is good Post-Printing Print, assemble, crash, print again! With Assembly.scad, requirements are self-explanatory, but ask me if you need help. Files There are four categories: Helpers Elements.scad => Contains all elements useful for design (batteries, ESC, receiver, etc) CCC3DBox.scad => A CC3D case I grabbed here. Not tested, only used it for design Assembly.scad => Assembly file, calculates required carbon rod length Variables.scad => All parameters should be tuned here Files with pieces to print: ArmHolders.scad BasePlates.scad MotorSupport.scad Parts to Print armBearingsSeparator_1.stl => 1 armBearingsSeparator_2.stl => 1 armHolderFront.stl => 2 armHolderRearFront.stl => 1 armHolderRearRear.stl => 1 basePlateLow.stl => 1 basePlateMiddle.stl => 1 basePlateServo.stl => 1 batteryHolder.stl => 1 ESCHolder.stl => 2 feetPropSaver.stl => Optional motorSupport.stl => 3 motorSupportFeet.stl => Optional Parts to Buy 3 Motors - 1806 about 2300 kv. I used DYS BE1806-2300kv. 3 ESC - 12A. I used Afro ESC. 5030 propellers. Whatever you find, clockwise and anti-clockwise. 1 servo motor, the TGY-9025 works fine, and I designed the support for it. 10mm OD hollow carbon fiber tube - about 35 cm. I used this one. Batteries - 3S from 1.3Ah to 2.2Ah. This battery is great, 2.2A works too but it's a bit heavy. 1 micro receiver. I use FrSky D4R-II 2.4G 4CH ACCST Telemetry flashed in 8 channels CPPM. 1 flight controller. I used a cheap CC3D. 2 bearings - size 10x15x4 mm. Mine are 9.8 inner mm instead of 10, that's why I don't put carbon rod inside but designed a part. Optional: Video for FPV Holder for a Sony 600 TVL Video transmitter Bluetooth to ease configuration, especially if you buy the USB port behind the servo like me (Not recommended :p) Screws are all 3 mm, mainly 6 and 8 mm long. You can use metal screws but nylon will save weight, and especially act as fuses. It works well! Others There are comments in code to help understand, but from time to time some names are not explicit. If you change them PR are welcome! Thanks to Brocopter for some inspiration, especially to add some tape on the rods to adjust the motor support.