Micro 105 FPV Quadcopter

myminifactory

I wanted to create a miniature FPV quadcopter, but I couldn't find any pre-made 3D printed frames that met my exact specifications. So, I decided to design one myself! My goals were to make it crash-resistant, lightweight, and provide excellent protection for onboard electronics. It measures about 105mm (diagonally from motor to motor) and weighs approximately 38g without the battery. It's designed around 8.5mm motors and the Micro Scisky flight controller. The camera mount is angled up at 13 degrees to accommodate fast forward flight, and I've also included two other options for mounting the camera level or pointed down at a 7-degree angle. Recommended Hardware: Flight Controller: MicroScisky Motors: Hubsan X4 H107c 8.5mm Motors VTX: FX758-2 5.8G 200mW Video Transmitter Antenna: I used the inner wire from a broken coaxial cable as an antenna. The default frequency on the FX758-2 is 5865, and after soldering the wire, I cut it to 12.8mm, which is the quarter wavelength of that frequency. Camera: 170-Degree Wide Angle Camera Battery: I use a mix of batteries, including 380mAh Hubsan, 500mAh Hubsan, and 300mAh Nano-Techs. CAUTION: When using Nano-Techs, make sure to get the battery polarity correct; I've had to switch the connector position on these before. Props: Currently, I'm using Ladybird props, which hold up much better than Hubsan props. Battery Pigtail: I cut one of the leads off a charging adapter. Nylon Hardware: M3 nylon nuts and machine screws. I used 20mm machine screws and cut them to size after attaching to the frame. Printable Standoff And Clip: As an alternative to using nylon hardware, navyblueboss made a very nice pin and clip set. I haven't printed one yet, but it looks great! JST SH Connector: A JST SH connector can be used to get a 5v supply for FPV gear straight from the Scisky. CAUTION: I managed to fry the power supply on one of my Scisky boards; other users have reported the same when using the FC to power FPV gear. Another option is to use straight battery power or a voltage regulator from battery for VTX and camera. 5v Step-Up Voltage Regulator: Use a Pololu 5v step-up instead of the JST SH connector to avoid burning up the voltage regulator on the Scisky. Radio Options: The Micro Scisky has a built-in DSM2 receiver. Here are some compatible radios: Taranis Plus + OrangeRX DSMX/DSM2 Module Spektrum DX6i Spektrum DX5e FsFly T-Six Optimal Printer Settings: The frame was designed with very specific dimensions based around common printer settings. It's not strictly necessary to use the following settings, but they should help produce a stronger frame. Infill: 100% Layer Height: 0.3mm Extrusion Width Top: 0.4mm Perimeters Top: 2 Extrusion Width Bottom: 0.48mm Perimeters Bottom: 4