How to build a 5-inch FPV Drone for $100

Transform your drone-building dreams into reality with a budget-friendly 5-inch FPV drone project that costs only about $100. Hoarder Sam’s step-by-step video tutorial serves to guide you through sourcing components from AliExpress, ensuring you stay within your budget while constructing a drone capable of capturing quality footage. Whether you’re an enthusiast looking to add another craft to your collection or a beginner eager to start flying, this guide is designed with accessibility in mind. With careful instructions and money-saving tips, you’ll find this project both satisfying and rewarding.

Embarking on this build, you’ll use components such as the Mark V frame and red bottom 2205 motors to create your own flying machine. Extract every bit of efficiency with the right flight controller stack and a robust VTX, learning soldering skills along the way. Even if it’s less powerful for stunt flying, this drone makes for a perfect cruiser that promises great flight time. With suggestions for supporting equipment and practical assembly advice, you’ll be ready to lift off, enjoying the world of FPV drone flying without breaking the bank.

How to build a 5-inch FPV Drone for $100

In this guide, you’ll get a step-by-step tutorial to build your own 5-inch FPV drone costing around $100, using parts from Aliexpress.

Product links:

Mark4 5-inch frame: link

2205 Red Bottom Motors: link

Alternate motors: link

F4 V3S Stack: link

Alternate F4 Stack: link

Cheapo analog camera: link

Caddx Ratel 2 Camera: link

Alternate Ratel 2: link

Limited stock 1W VTXs used in this guide:

1W VTX: link

1W VTX: link

SpeedyBee TX800 VTX: link

Screw assortment kit: link

JHEMCU ELRS Receiver: link

Speedybee ELRS Receiver: link

5-inch props: link

4s 1500mah lipo: link

RadioMaster Pocket Radio: link

Eachine EV800D Goggles: link

Pinecil Soldering Iron: link

TS100 Soldering Iron: link

Hota D6 Charger: link

Sourcing Affordable Parts

Building a 5-inch FPV drone on a budget is not only possible but can also be an incredibly rewarding experience. Keeping a keen eye on costs without compromising functionality is vital. For this reason, sourcing and timing your purchases effectively can make all the difference.

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Using Aliexpress for Budget Components

Aliexpress has become a popular go-to for FPV drone enthusiasts hunting for budget-friendly components. You’ll find a vast array of parts necessary for your build, from frames to motors, all at competitive prices. By opting for generic brands and older models, such as the red bottom 2205 motors or a generic F4 flight controller stack, you can drastically reduce costs while still securing reliable performance. However, given the diversity in quality, it’s crucial to read reviews and confirm compatibility before making a purchase. The delight of discovering that even cheaper alternatives, like the Mark V 5-inch frame, can hold their own in a drone build is what makes Aliexpress a treasure trove for frugal builders.

Waiting for Sale Periods to Save Money

Timing your purchases to coincide with sale periods can lead to substantial savings. Aliexpress frequently holds sales events, often in the first and third weeks of the month, which present ideal opportunities to purchase components at rock-bottom prices. Additionally, keeping items in your cart can sometimes alert you to price drops, maximizing your budget’s impact. Patience is indeed a virtue in this case, as waiting for sales and utilizing coupon codes can transform a modest budget into a powerful buying tool, thereby enabling even the most constrained of budgets to stretch enough to cover all necessary components for your drone build.

Essential Components for the Build

When embarking on a drone build, selecting the right components is crucial. For this budget build, the focus is on parts that offer good performance without exceeding a tight budget.

Mark V 5-inch Frame Overview

The Mark V 5-inch frame serves as the structural foundation of your drone. This component is priced at an affordable rate while still providing the necessary durability for a stable build. It is light, durable, and compatible with many other components needed for this project. Despite its budget-friendly nature, the Mark V frame does not sacrifice quality, making it an excellent choice for those looking to build multiple drones without breaking the bank.

Choosing Red Bottom 2205 Motors

The red bottom 2205 motors are chosen not just for their nostalgic appeal but also for their performance-to-cost ratio. Once popular for their power and reliability, these motors have resurfaced, often available at a fraction of their original cost due to renewed production runs. While they may lack the high-end power of modern motors, their efficiency and affordability make them more than adequate for cruising around with a GoPro attached.

Selecting a Generic F4 Flight Controller Stack

Flight controllers act as the drone’s brain, and the generic F4 flight controller stack provides necessary features and functionalities at a comfortable price point. Though generic, these controllers suffice for the task at hand, offering ample performance for basic flight needs. Look for ones with a 45 amp ESC, as they balance the power required while maintaining a low price tag.

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Using a Generic 1800 TVL Camera

Although not top of the line, a generic 1800 TVL camera will adequately capture your flights. Its low-cost nature is perfect for the build, though you should be mindful of its limitations, especially regarding lens distortion and lower resolution. Investing a little more in a higher-tier camera is worth considering if your budget allows, as it can significantly enhance the quality of your footage.

Opting for a Solo Good or Cyclone 1-watt VTX

For video transmission, the Solo Good or Cyclone 1-watt VTX is recommended. Its relatively low cost and included antenna make it a suitable selection, delivering reliable performance during flights. Ensure it is compatible with your chosen receiver, and be prepared to switch to alternatives if availability becomes an issue.

Additional Equipment Recommendations

After acquiring your main components, you’ll need some additional equipment to complete your setup and allow for smooth operation.

4S 1500mAh LiPo Batteries

Powering your drone will require reliable batteries. 4S 1500mAh LiPo batteries are widely available and provide a good balance between weight and flight time for this build. These batteries can be found easily online or at local hobby shops, often at a decent price, making them accessible for new builders.

Budget-Friendly Transmitter: RadioMaster Pocket

The RadioMaster Pocket transmitter, specifically the ExpressLRS version, is recommended due to its affordability and user-friendly interface. It provides the necessary control for the drone and fits comfortably in your hands. Remember, this transmitter requires two 18650 batteries, which are not included.

Cost-Effective Goggles: Eachine EV800D

Completing your setup are the Eachine EV800D goggles, an excellent budget option for anyone invested in FPV flying. These goggles provide clear video reception and offer the versatility to function as a monitor or traditional FPV goggles, enhancing your flying experience without straining your budget.

Assembly Skills Required

To successfully assemble your drone, you must possess certain skills, particularly in soldering, given its critical role in electronics assembly.

Importance of Soldering Skills

Soldering is essential for ensuring secure connections between various components. Quality soldering directly impacts the drone’s flight reliability and longevity. Investing in a high-quality soldering iron, like the Pinecil or TS100, can facilitate the soldering process, making it easier to attain professional results.

Tips for Smooth Assembly

A smooth assembly process begins with organization and understanding the placement of every component. Gathering all necessary tools and screws in advance will prevent unnecessary interruptions. Visualizing your assembly plan and referencing online tutorials can also prove beneficial, especially when constructing the frame and attaching the motors.

Drone Frame Setup

Proper setup of the drone frame is foundational to the entire build, affecting both structural integrity and functional layout.

Screwing Recommendations

Having the right screws on hand is crucial for a seamless setup. As a general rule, an M3 screw assortment kit is invaluable. While the frame may come with screws, they can be too long or short depending on other components’ fittings. For example, 25mm screws are preferred over the standard 30mm screws provided for the flight stack.

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Frame Assembly Tips

Frame assembly is considerably straightforward, thanks to the simple design of the Mark V frame. If needed, consult product images online to guide your process of assembling different parts. Ensure all screws are tightened securely without over-tightening, as this could damage the frame or its threads.

Motor and Propeller Installation

Proper motor and propeller installation is necessary to ensure smooth, vibration-free flights.

Installing Red Bottom 2205 Motors

You will use 10mm M3 screws to mount the red bottom 2205 motors onto the frame’s arms. Adjusting the length of the screws ensures secure motor attachment and prevents damage from incorrect screw installation. Be mindful of the motors’ orientation and direction to ensure they spin correctly upon powering the drone.

Choosing the Right Propellers

Choose propellers suitable for 5-inch frames, balancing thrust with your motor’s capabilities. Budget-friendly propellers will suffice for this build, but consider purchasing extra pairs to swap in case of breakage during initial flights.

Setting Up the Flight Controller

Proper mounting and configuration of the flight controller are crucial to maintaining effective drone control.

Mounting the Generic F4 Flight Controller

Secure the F4 flight controller onto the mounting stack with the correct-sized screws. Spacers might be needed to ensure a snug fit without putting unnecessary stress on the components. Use vibration-damping gummies to reduce potential vibrations affecting the flight controller’s performance.

Basic Configuration Steps

Connect the flight controller to your computer and use configuration software (like Betaflight Configurator) to set it up. Perform basic checks such as motor rotations, receiver binding, and transmitter calibration to verify proper functionality before flight.

Camera and VTX Setup

A correctly set camera and reliable video transmission system enhance FPV flight experiences.

Adjusting Camera for Optimal Footage

Adjust the angle of the camera according to your preferred field of view. Securing the camera correctly will minimize unwanted movement and ensure a steady feed during flight. Be aware of the narrow view typical in budget cameras and adjust accordingly.

Installing the Solo Good or Cyclone 1-watt VTX

The VTX should be securely mounted, using additional screws if needed. Make sure it is connected to the flight controller and antenna correctly, ensuring there are no short circuits or loose connections that could impact transmission quality.

Performance and Flying Experience

Once assembled, understand your drone’s capabilities to ensure a pleasant and safe flying experience.

Capabilities for Basic Cruising

This budget build is primarily designed for basic cruising and capturing quality footage with an attached GoPro. While not intended for high-speed racing or acrobatic stunts, the drone provides stable and reliable performance for leisurely flights.

Efficiency and Flight Time Considerations

Equipped with the recommended components and battery, the drone should deliver decent flight times. Propeller choice and flying style play roles in maximizing efficiency, so practice flying techniques that conserve power, extending flight duration per charge.

Conclusion

Advantages of a Budget FPV Drone Build

Constructing an FPV drone on a budget opens the door to enjoying the hobby without significant financial strain. Not only do you gain hands-on experience with each build, but you also develop valuable skills that can be applied to future projects. Building a drone for just $100 demonstrates that quality and cost effectiveness can coexist, resulting in a fulfilling and fun endeavor.

Encouragement for Enthusiasts to Experiment

To all drone enthusiasts and budding builders: Embrace the challenge of a budget build. Experiment with different components, configurations, and techniques. With patience and creativity, you can achieve impressive results. Remember, every build enhances your understanding and contributes to a more profound appreciation for the art of drone building. So grab your parts and tools, and let your creativity take flight!