FPV Flight Controllers

Find a Flight Controller That Matches Your FPV Build

Choose an FPV flight controller by board type, mounting size, required connections, firmware, video system and ESC compatibility. Processor type alone does not determine whether a board fits your build.

1. Choose a Standalone FC, AIO or FC/ESC Stack

Choose a standalone FC when keeping the existing FPV ESC. A matched FC/ESC stack simplifies a new racing, freestyle or long-range build. An AIO flight controller integrates the FC and ESC on one board and is often used in whoops, cinewhoops and compact drones.

AIO describes integration rather than mounting size. Always check board dimensions, ESC current, battery cell count and included receiver or VTX functions.

2. Match the Mounting Size and Layout

Measure the mounting-hole centers and available frame space. Common patterns include 20×20 mm, 25.5×25.5 mm and 30.5×30.5 mm. Also check stack height, USB access, solder-pad position and connector clearance. A 20×20 FC can fit some 5-inch builds, so do not select mounting size from drone size alone.

3. Check UARTs and Power Outputs

Count the connections needed for the receiver, GPS, digital VTX, ESC telemetry, buzzer and other devices. UART availability is board-specific; an F7 flight controller does not automatically provide more usable UARTs than every F405 board.

Confirm that the FC has the required 5V, 9V or 10V BEC output and enough power for connected equipment. Check receiver compatibility with your radio controller before ordering.

4. Verify Firmware, Video and ESC Compatibility

Confirm that the exact board target supports your firmware, such as Betaflight, INAV or ArduPilot. For analog video, check OSD and camera/VTX pads. For DJI, Walksnail, HDZero or O4 builds, check the digital VTX port, BEC output and UART connection.

When pairing a separate FC and ESC, compare both wiring diagrams. Boards can use the same plug with different pin assignments, so connector shape alone does not confirm compatibility.

Compare FPV Flight Controllers by Shopping Need

Flight Controllers for Repairs and Upgrades

For a direct replacement, use the same FC model and revision when possible. Otherwise, match the mounting size, firmware target, ESC connection, UARTs, BEC outputs and video-system support.

Upgrade when you need more connections, digital VTX support, better wiring, blackbox storage or a matched FC/ESC stack. If battery voltage or ESC capacity changes, recheck the FPV battery, motors and propellers. Browse all FPV drone parts for a complete build.

FPV Flight Controller Shopping FAQ

Q: What should I check before buying an FPV flight controller?

A: Check the board type, mounting pattern, firmware target, UARTs, BEC outputs, video support, ESC connection and physical dimensions.

Q: Should I buy an F405, F7 or H7 flight controller?

A: Choose by the features your build needs. Compare the exact board's UARTs, firmware, BECs, storage and connections instead of selecting by processor name alone.

Q: Is a 20×20 or 30.5×30.5 FC better for a 5-inch drone?

A: Neither is universally better. Use the mounting pattern supported by the frame and ESC, then compare available space, weight, cooling and connector access.

Q: Can any flight controller work with any ESC?

A: No. Confirm the mounting arrangement, motor protocol, pinout, telemetry, current-sensor connection and voltage requirements.

Q: Should I choose an AIO flight controller or a separate stack?

A: Choose an AIO when space and weight are priorities. Choose a separate stack when easier cooling, repairs and individual component replacement matter more.

Q: Does every flight controller support Betaflight?

A: No. Support depends on the exact board and firmware target. Confirm current target availability before purchasing.

For more detail, read the FPV flight controller buying guide.