18650 Micro Foldable FPV Drone

This project is a custom-built foldable long-range FPV drone designed for efficient, extended flight times of up to 18 minutes. The frame is entirely 3D-printed and incorporates a unique folding mechanism for easy portability. The drone is powered by a single 18650 cell, with a focus on creating a lightweight and cost-effective setup using components like repurposed Cetus X motors and an affordable AIO flight controller.

Throughout the build, challenges included optimizing 3D-printed part designs for precise assembly, dealing with material fragility, and troubleshooting various electrical issues. A key innovation was the magnetic battery connection system, which resolved voltage drop issues caused by initial design flaws.

This drone offers a practical and accessible solution for those interested in long-range FPV flight, balancing simplicity, functionality, and affordability.

STL-Files can be found here.

Part 1

Part 2

Print Settings:

• Layer Height: 0.2
• Bottom Shells: 3
• Top Shells: 4
• Infill: 15%
• Speed: 120mm/s

Parts:

• FC: https://s.click.aliexpress.com/e/_olzt3M5 *
• Battery: https://s.click.aliexpress.com/e/_omPpQdL * (Pick a good one!)
• 4x 3mm x 41mm Carbon rods: https://s.click.aliexpress.com/e/_oDEKnG9 *
• Motors: https://s.click.aliexpress.com/e/_ooSbAyZ *
• Cheaper Motors: https://s.click.aliexpress.com/e/_oCzHpeh * (The motor mount for this is untested)
• VTX: https://s.click.aliexpress.com/e/_oEqMzmv *
• Camera: https://s.click.aliexpress.com/e/_oonKwJR *
• Props: https://s.click.aliexpress.com/e/_ol8grZB *
• 6x M2 x 2.5mm x 3.2mm Threaded Inserts: https://s.click.aliexpress.com/e/_oE0oS4h *
• 1x 10mm x 3mm, 1x 6mm x 3mm neodymium magnet: https://s.click.aliexpress.com/e/_oBIBzvr *
• Filament: https://s.click.aliexpress.com/e/_onDybZf *
• 4x M2 x 6mmScrews
• 4x M2 x 16mm Screws

Accessories:

• Remote Control: https://s.click.aliexpress.com/e/_oCUNKaR *
• Electric Screwdriver: https://s.click.aliexpress.com/e/_omFdLlp *
• Analog Goggles: https://s.click.aliexpress.com/e/_oEX2qIz *

Links marked with a * are affiliate links. If you make a purchase through these links, I earn a small commission at no extra cost to you.