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Budget FPV Drone Build Guide 2023

Mar 9, 2025

2023 5-Inch FPV Freestyle Budget Build

Overview

  • Annual FPV freestyle budget drone build.
  • 2023 version capable of 6s with Bluetooth for setup and tuning via phone.
  • Can carry a full-size GoPro.
  • Features ELRS on board.
  • Total cost approximately $200 in parts.

Parts List

Frame

  • Source One V5
    • Available from several US retailers.
    • Cost: ~$30
    • 3D printable parts available.

Flight Controller and ESC Stack

  • Speedy B F405 V3
    • Cost: $60
    • Features Bluetooth for wireless setup.
    • 50A ESCs, capable of 6s.
    • Numerous pads for additional components (GPS, beeper, LEDs).
    • Recommended if budget is tight; V4 version available for $10 more.

Motors

  • T-Motor Velox V3 2207 1750 KV
    • Suitable for 6s.
    • Cost: <$15 each.

Camera and VTX

  • Analog Setup
    • Suitable for beginners and those with existing analog goggles.
  • VTX:
    • Happy Model OVX 303
    • Cost: $13
    • 25 to 300mW output power.
  • Camera:
    • Foxeer Razer Micro 1200 TVL
    • Cost: $19

Receiver

  • Happy Model ELRS EP1
    • Cost: $13

Props

  • Johnny Freestyle Props
    • 5-inch Freestyle.

Additional Recommendation

  • Mesh Wire Protector
    • Optional but keeps build clean.
    • Cost: ~$3

Assembly

Initial Setup

  • Assemble frame using provided hardware.
  • Use electric screwdriver with various bits for assembly.

Motor Installation

  • Mount motors before attaching the top plate.
  • Use larger screws for thick frame arms (6mm thick).
  • Motors can spin in either direction; configure in Betaflight.

Flight Controller and ESC

  • Connect ESC to the frame using long screws.
  • Solder capacitor and XT60 to ESC.
  • Use Blue Tack to hold components for soldering.
  • Connect flight controller to ESC using ribbon cable.
  • Secure with included dampeners.

Soldering

  • Use mesh wire protector for motor wires.
  • Solder motors to ESC pads.
  • Connect camera, receiver, and VTX to flight controller.
  • Use appropriate pads for each component.
  • Reverse TX/RX wires for receiver connection.
  • Install antenna for receiver and VTX.

Completion and Testing

  • Attach top plate and secure all components.
  • Install battery grip for secure battery mounting.
  • Perform power-on test using smoke stopper.

Configuration and Tuning

Betaflight Setup

  • Use ESC Configurator and Betaflight for firmware update and configuration.
  • Flash Bluejay firmware to ESCs.
  • Set motor protocol to DShot 600; enable bidirectional DShot.
  • Configure ports for receiver and VTX.
  • Set up modes (arming, beeper, angle mode, etc.).

Motor Configuration

  • Verify motor direction and remap if necessary.
  • Check motor order and directions using Betaflight.

Receiver Binding

  • Use ExpressLRS WiFi to bind receiver.

Video Transmitter Configuration

  • Configure VTX table using SmartAudio protocol.
  • Setup channels and power levels.

OSD Setup

  • Configure on-screen display elements.

Flight Test

  • Test flight using 6s battery and GoPro for footage.
  • No major tuning required, but can adjust PIDs if needed.
  • Option to upgrade to DJI digital system for enhanced video.

Conclusion

  • Successful build for FPV enthusiasts on a budget.
  • Encourages learning and self-repair for hobbyists.
  • Links to alternative parts and 3D printing services provided.

Note: This guide is a reference document summarizing the key steps and components for building a budget FPV drone. Adapting and customizing based on personal preferences and available resources is encouraged.

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